METHOD FOR PRODUCTION OF ZINC BY UTILIZING LEAD PLANT SLAG
TECHNICAL FIELD
 The present invention relates to the field of pyro metallurgy, and in particular relates to increasing yield of zinc by utilization of lead plant slag and moore cake obtained from one or more sources.
BACKGROUND
 In recent years, with the rapid growth of economy and a worldwide development has led to an increase in demand for various raw materials including zinc and lead. Moreover, zinc and lead are valuable metals which can be extracted by performing various techniques by utilizing various ores containing zinc and iron. Nowadays, various industries are employed in the production of zinc and lead in order to meet the never ending demand of zinc and lead. Traditionally, the production of zinc and lead is carried out by performing hydrometallurgy or pyro metallurgy of one or more ores having lead and zinc as an ingredient.
 Moreover, the production of zinc and lead is also carried out by utilizing various waste materials enriched in zinc and lead. These waste materials are reprocessed or recycled to recover various valuable metals like zinc and lead. However, the current methods for the production of zinc and lead are quite expensive and therefore difficult to put into practical use in industry. In addition, it is a natural tendency to throw away the waste materials in various landfills which leads to land pollution and water pollution. The increase and disposal of waste has become a nation-wide problem in regards to its effects on environment. There is an urgent demand for promoting recovery of resource from these waste materials.
 Going further, one of the crucial waste products which has been utilized by various industries in the hydrometallurgy of zinc is moore cake. The moore cake is used as an input for extracting zinc and lead by performing the pyro-metallurgical recovery process. Currently, zinc hydro-metallurgy is a prime producer of the moore cake which utilizes the roast-leach-electrolysis route. Moreover, neutral leaching, acid leaching, pre-neutralization and Jarosite precipitation are the sub-sections in leaching section of the roast leach electrolysis route. In addition, zinc recoveries were as low as 85 % of the potential zinc enrichment and the moore cake was considered as a final waste from the leaching section
before invention of Jarosite precipitation. Further, with no technique being developed at that time for recovery of zinc from the moore cake, the moore cake with a 4-11% zinc and 2-6% lead was disposed in secured land fill. In 2005, for improving environmental sustainability, a Moore Cake Treatment Plant (MCTP) was setup to recover metal present in moore cake with a focus on lead recovery by performing treatment of the moore cake.
 Typically, the treatment of moore cake is done in a rotary kiln by supplying the moore cake as an input along with other materials in order to extract zinc and lead from the moore cake. Moreover, the treatment of moore cake is performed in a moore cake treatment plant. However, current availability of good quality moore cake has decreased considerably over a period of time. In addition, content of zinc and lead in poor quality moore cake is not sufficient enough for obtaining a higher yield of zinc and lead.
 Further, there is a need for various other secondary materials which could be utilized for the production of zinc and lead along with the moore cake in the rotary kiln. Furthermore, these secondary materials should contain a high percentage of zinc and lead in order for enabling a higher yield of zinc and lead. The secondary materials may be obtained from various numbers of sources or processes providing zinc and lead as waste residue. Moreover, one of the few sources producing zinc and lead as a waste product is the lead smelting process. In addition, the waste product produced from the smelting of lead contains a higher percentage of lead and zinc which could be utilized for the extraction of zinc and lead. However, the waste product from the lead smelting is dumped in landfills which results in increase of land and water pollution and causing substantial damage to the environment.
 Several methods and systems are known in the art for the production or recovery of zinc. One such method allows the recovery of zinc from one or more zinc bearing materials mixed with a reducing agent in a dc arc furnace in which the zinc is volatilized and collected in a suitable form. Another such method involves the production of zinc oxide and pig iron by utilizing cinder and slag containing zinc, iron and lead in the rotary kiln. Yet another method utilizes one or more secondary materials containing iron, zinc and lead along with reactive fine-grained carbon carrier in a rotary tubular furnace. The one or more secondary materials are preferable steel making dusts. Yet another method involves the utilization of iron dust in a shaft furnace for recovering valuable metals such as zinc and lead.
 The present systems and methods for the production or recovery of zinc from waste materials such as moore cake are inefficient. Moreover, the present systems and methods do not utilize the waste products from lead smelting along with moore cake for the recovery of zinc and lead. In addition, the present systems and methods for the production or recovery of zinc and lead from waste materials have a high cost of production. Further, the waste materials from the lead smelting are thrown away which leads to an increase in land and water pollution. Furthermore, the present systems and methods for the recovery of zinc and lead do not provide a higher throughput. Moreover, the use of furnace oil for heating the one or more materials in the rotary kiln for the recovery of zinc and lead leads to a high content of sulphur in the final product.
 In light of the above stated discussion, there is a need for a method and system that
overcomes the above stated disadvantages.
SUMMARY
 In an aspect of the present disclosure, the present disclosure provides a method for production of zinc oxide by treatment of a waste residue. The method includes feeding a plurality of materials to a furnace and heating a mixture of the plurality of materials at a pre-defined range of temperature. In addition, the method includes passing a flue gas and recovering the zinc oxide from the flue gas. The plurality of materials includes the waste residue bearing lead slag, moore cake, flux material and coke fines. The waste residue bearing lead slag contains zinc and lead. The heating is performed for reducing zinc contained in each of the plurality of materials into a metallic form and forming vapors of zinc and lead contained in each of the plurality of materials for volatilization of zinc and lead. Further, the heating is performed for oxidizing the formed vapors of zinc and lead in a stream of gases. The flue gas includes a plurality of dust particles containing zinc and lead in oxidized form. The zinc oxide is recovered by filtering the flue gas. The filtering is done for entrapping the plurality of dust particles.  In an embodiIn an embodi In an embodiIn an embodi In an embodi ment of the present disclosure, ment of the present disclosure, ment of the present disclosure, ment of the present disclosure, ment of the present disclosure, ment of the present disclosure, ment of the present disclosure, ment of the present disclosure, the zinc oxide the zinc oxide the zinc oxide the zinc oxide the zinc oxide is recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a recovered by utilizing a plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnace plurality of settling chambers connected to the furnaceplurality of settling chambers connected to the furnace. T . T. The flue gas he flue gas he flue gas he flue gas he flue gas he flue gas is transferred to the transferred to the transferred to the transferred to the transferred to the transferred to the transferred to the transferred to the plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materials plurality of settling chambers for large unreacted materialsplurality of settling chambers for large unreacted materials . T . T. The settled unrehe settled unrehe settled unrehe settled unre he settled unre he settled unre he settled unre acted acted acted acted materials materials materials areareare further collected and recycled back for the feeding further collected and recycled back for the feeding further collected and recycled back for the feeding further collected and recycled back for the feedingfurther collected and recycled back for the feeding further collected and recycled back for the feeding further collected and recycled back for the feeding further collected and recycled back for the feedingfurther collected and recycled back for the feeding further collected and recycled back for the feedingfurther collected and recycled back for the feedingfurther collected and recycled back for the feedingfurther collected and recycled back for the feedingfurther collected and recycled back for the feedingfurther collected and recycled back for the feedingfurther collected and recycled back for the feedingfurther collected and recycled back for the feeding further collected and recycled back for the feeding further collected and recycled back for the feedingfurther collected and recycled back for the feeding further collected and recycled back for the feeding further collected and recycled back for the feedingfurther collected and recycled back for the feeding further collected and recycled back for the feeding further collected and recycled back for the feedingfurther collected and recycled back for the feeding . T . T. The settling he settling he settling he settling he settling he settling he settling is done by done by done by done by done by reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas.reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas.reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas.reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas.reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas.reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas. reducing velocity of particles present in the flue gas.reducing velocity of particles present in the flue gas.reducing velocity of particles present in the flue gas.reducing velocity of particles present in the flue gas.
 In an embodiment of the present disclosure,In an embodiment of the present disclosure, In an embodiment of the present disclosure,In an embodiment of the present disclosure, In an embodiment of the present disclosure,In an embodiment of the present disclosure, In an embodiment of the present disclosure, In an embodiment of the present disclosure, In an embodiment of the present disclosure, In an embodiment of the present disclosure, In an embodiment of the present disclosure, In an embodiment of the present disclosure, In an embodiment of the present disclosure, In an embodiment of the present disclosure, the flue gas the flue gas the flue gas the flue gas the flue gas the flue gas is further passed on to one further passed on to one further passed on to one further passed on to one further passed on to one further passed on to one further passed on to one further passed on to one further passed on to one or more coolers c or more coolers c or more coolers cor more coolers cor more coolers c or more coolers c or more coolers connected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambersonnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers onnected to the corresponding plurality of settling chambers for radiation for radiation for radiation for radiation for radiation cooling through atmospheric aircooling through atmospheric air cooling through atmospheric air cooling through atmospheric aircooling through atmospheric air cooling through atmospheric aircooling through atmospheric air cooling through atmospheric aircooling through atmospheric air cooling through atmospheric air cooling through atmospheric air cooling through atmospheric aircooling through atmospheric aircooling through atmospheric aircooling through atmospheric air. The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue bring down temperature of the flue gas to below 200°Cgas to below 200°Cgas to below 200°Cgas to below 200°Cgas to below 200°C gas to below 200°C gas to below 200°C gas to below 200°Cgas to below 200°C . T . T he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form is converted tconverted t converted t converted t converted to a o a o a solid form solid form solid form solid form. Th e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide is further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically further collected in a conveying system for pneumatically transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage.transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage.transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage.transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage. transferring the solid zinc oxide to a product bin for storage.transferring the solid zinc oxide to a product bin for storage.transferring the solid zinc oxide to a product bin for storage.  In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further In an embodiment of the present disclosure, method further transfer transfertransfer transfers the flue gas the flue gas the flue gas the flue gas the flue gas the flue gas the flue gas to a pl to a plto a plto a pl urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust urality of bag filters connected to the one or more coolers for collecting fine dust particles and transferring the zi particles and transferring the zi particles and transferring the zi particles and transferring the ziparticles and transferring the zi particles and transferring the zi particles and transferring the zi particles and transferring the zi particles and transferring the ziparticles and transferring the zi particles and transferring the ziparticles and transferring the zi particles and transferring the ziparticles and transferring the ziparticles and transferring the ziparticles and transferring the zinc oxide to the conveying system. T nc oxide to the conveying system. Tnc oxide to the conveying system. T nc oxide to the conveying system. T nc oxide to the conveying system. T nc oxide to the conveying system. T nc oxide to the conveying system. Tnc oxide to the conveying system. T nc oxide to the conveying system. Tnc oxide to the conveying system. Tnc oxide to the conveying system. T nc oxide to the conveying system. T nc oxide to the conveying system. Tnc oxide to the conveying system. Tnc oxide to the conveying system. T nc oxide to the conveying system. Tnc oxide to the conveying system. The zinc oxide he zinc oxide he zinc oxide he zinc oxide he zinc oxide he zinc oxide is pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storagepneumatically transferred in the product bin for storagepneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storagepneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storagepneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storagepneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storagepneumatically transferred in the product bin for storage pneumatically transferred in the product bin for storage . In addition, the . In addition, the . In addition, the . In addition, the . In addition, the . In addition, the . In addition, the . In addition, the . In addition, the . In addition, the plura lity of bag lity of bag lity of bag lity of bag lity of bag lity of bag lity of bag lity of bag lity of bag filters filters areare connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge connected to one or more fans for inducing a negative draft and allowing discharge of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans. of exhaust gases through a stack connected to the one or more fans.of exhaust gases through a stack connected to the one or more fans.  In an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnacIn an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnac In an embodiment of the present disclosure, moore cake is added in furnace in a variation of 0 in a variation of 0in a variation of 0in a variation of 0 in a variation of 0 in a variation of 0 in a variation of 0 in a variation of 0 in a variation of 0-15%. The furnace rotates at a pre 15%. The furnace rotates at a pre 15%. The furnace rotates at a pre15%. The furnace rotates at a pre 15%. The furnace rotates at a pre15%. The furnace rotates at a pre 15%. The furnace rotates at a pre 15%. The furnace rotates at a pre15%. The furnace rotates at a pre15%. The furnace rotates at a pre15%. The furnace rotates at a pre 15%. The furnace rotates at a pre 15%. The furnace rotates at a pre15%. The furnace rotates at a pre 15%. The furnace rotates at a pre15%. The furnace rotates at a pre15%. The furnace rotates at a pre -determined speed of rotation. The pre determined speed of rotation. The predetermined speed of rotation. The predetermined speed of rotation. The pre determined speed of rotation. The pre determined speed of rotation. The pre determined speed of rotation. The predetermined speed of rotation. The pre determined speed of rotation. The pre determined speed of rotation. The pre determined speed of rotation. The pre determined speed of rotation. The pre determined speed of rotation. The predetermined speed of rotation. The pre determined speed of rotation. The predetermined speed of rotation. The pre -determined speed o determined speed o determined speed o determined speed o determined speed o determined speed o determined speed odetermined speed o determined speed of rotation of the furnace is 0.40 f rotation of the furnace is 0.40 f rotation of the furnace is 0.40 f rotation of the furnace is 0.40 f rotation of the furnace is 0.40 f rotation of the furnace is 0.40 f rotation of the furnace is 0.40 f rotation of the furnace is 0.40 f rotation of the furnace is 0.40f rotation of the furnace is 0.40f rotation of the furnace is 0.40f rotation of the furnace is 0.40 f rotation of the furnace is 0.40 f rotation of the furnace is 0.40-2. 50 rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rpm. The furnace corresponds to a rotary furnace. rotary furnace.rotary furnace.rotary furnace. rotary furnace.rotary furnace.rotary furnace.rotary furnace.rotary furnace.
 In an embodiment of the present disclosure, the pre-defined range of temperature provided for the heating of the mixture of the plurality of materials is in a range of 1100°C to 1200°C. Each of the plurality of materials is fed from an upstream side of the furnace.
 In an embodiment of the present disclosure, the method further includes discharging a slag containing the moore cake and one or more impurities after the heating of the plurality of materials.
 In an embodiment of the present disclosure, the heating of the plurality of materials is carried out by a flame burner connected on a downstream side of the furnace. The heating is done by utilizing high speed diesel oil as a fuel in the flame burner for the heating of the plurality of materials.
 In another embodiment of the present disclosure, the high speed diesel oil is added for reducing content of sulphur in the zinc oxide. The content of sulphur in the zinc oxide is less than 0.75%.
 In an embodiment of the present disclosure, the production of the zinc oxide is carried out by optimizing a plurality of parameters associated with the furnace. The plurality of parameters includes speed of rotation of the furnace, moistening method of blend, temperature of the furnace, addition of the flux material, amount of the plurality of materials added to the furnace and controlled feeding of excess air.
STATEMENT OF THE DISCLOSURE
 The present disclosure relates to a method for production of zinc oxide by treatment of a waste residue. The method includes feeding a plurality of materials to a furnace, heating a mixture of the plurality of materials at a pre-defined range of temperature, passing a flue gas and recovering the zinc oxide from the flue gas. The plurality of materials includes the waste residue bearing lead slag, moore cake, flux material and coke fines. The waste residue bearing lead slag contains zinc and lead. The heating is performed for reducing zinc contained in each of the plurality of materials into a metallic form; forming vapors of zinc and lead contained in each of the plurality of materials for volatilization of zinc and lead and oxidizing the formed vapors of zinc and lead in a stream of gases. The flue gas includes a plurality of dust particles containing zinc and lead in oxidized form. The zinc oxide is recovered by filtering the flue gas. The filtering is done for entrapping the plurality of dust particles.
BRIEF DESCRIPTION OF THE FIGURES
 Having thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
 FIG. 1 illustrates a system for production of raw zinc oxide by treatment of waste residue bearing lead slag and moore cake, in accordance with various embodiments of the present disclosure;
 FIG. 2 illustrates a block diagram for showing one or more units for the production of raw zinc oxide, in accordance with various embodiments of the present disclosure; and
 FIG. 3 illustrates a flowchart for the production of raw zinc oxide by the treatment of waste residue bearing lead slag and moore cake, in accordance with various embodiments of the present disclosure.
DETAILED DESCRIPTION
 In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present technology. It will be apparent, however, to one skilled in the art that the present technology can be practiced without these specific details. In other instances, structures and devices are shown in block diagram form only in order to avoid obscuring the present technology.
 Reference in this specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present technology. The appearance of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Moreover, various features are described which may be exhibited by some embodiments and not by others. Similarly, various requirements are described which may be requirements for some embodiments but not other embodiments.
 Moreover, although the following description contains many specifics for the purposes of illustration, anyone skilled in the art will appreciate that many variations and/or alterations to said details are within the scope of the present technology. Similarly, although many of the features of the present technology are described in terms of each other, or in conjunction with each other, one skilled in the art will appreciate that many of these features can be provided independently of other features. Accordingly, this description of the present technology is set forth without any loss of generality to, and without imposing limitations upon, the present technology.
 FIG. 1 illustrates a system 100 for production of zinc oxide by pyro metallurgical treatment of moore cake and waste residue bearing lead, in accordance with various embodiments of the present disclosure. The treatment of moore cake and lead plant slag is carried in a rotary furnace. In addition, the lead plant slag is Ausmelt slag. In addition, the waste residue bearing lead is obtained from one or more sources. The one or more sources correspond to one or more processes producing waste materials having a high percentage of zinc and lead. Further, the one or more sources include but may not be limited to lead smelting, residue from acid-leach process, filter press cake, gypsum cake and ETP cake.
 The system 100 includes an input unit 102, a production unit 104 and an output unit 106. In an embodiment of the present disclosure, the above stated units perform the
production or recovery of zinc by utilizing moore cake and waste residue bearing lead. In addition, the one or more feed materials contain a valuable amount of zinc and lead. In an embodiment of the present disclosure, the lead plant slag contains zinc in a range of 5-20% and contains lead in a range of 2-10%. In an embodiment of the present disclosure, the moore cake contains zinc in a range of 4-11% and lead in a range of 2-6%.
 In an embodiment of the present disclosure, the input unit 102 includes a storage device and a feeder. Moreover, the input unit 102 stores one or more feed materials. In addition, the input unit 102 may store any amount of the one or more feed materials based on a requirement for the production of zinc. Further, the one or more feed materials include coke fines, a flux material, lead plant slag and moore cake. The flux material is limestone chips added in a pre-determined amount based on basicity of the lead plant slag. In addition, the basicity of the lead plant slag is derived on the basis of a pre-defined ratio of a mixture of Calcium Oxide (CaO) and Magnesium Oxide (MgO) to Silicon dioxide (SiO2). The pre-defined ratio for the basicity lies between 025-0.50. In an embodiment of the present disclosure, the one or more feed materials may be stored in form of a solid, liquid or gas. In an embodiment of the present disclosure, the one or more feed materials are stored in a pre-determined proportion based on an amount of zinc to be produced in the rotary furnace.
 In an embodiment of the present disclosure, the storage device of the input unit 102 is attached to the feeder. In another embodiment of the present disclosure, the storage device of the input unit 102 is connected to the feeder through any connecting mechanism. In an embodiment of the present disclosure, the storage device is configured to store the one or more feed materials. In an embodiment of the present disclosure, the feeder is directly connected to the storage device. In another embodiment of the present disclosure, the feeder is connected via a connecting medium to the storage device. In an embodiment of the present disclosure, the connecting medium includes but may not be limited to a pipe, a tray and a carriage.
 Moreover, in an embodiment of the present disclosure, the feeder may be any kind of feeder for feeding the one or more feed materials for the production of zinc. In an embodiment o the present disclosure, the feeder includes a chain feeder, a roller feeder, a belt feeder, a weigh feeder, a revolving disc feeder, a vibratory feeder and the like. In an embodiment of the present disclosure, the feeder is configured to feed the one or more feed
materials in a pre-determined quantity for the production of zinc. Going further, the input unit 102 is associated with the production unit 104. In an embodiment of the present disclosure, the input unit 102 is mechanically connected to the production unit 104.
 In an embodiment of the present disclosure, the input unit 102 and the production unit 104 are connected in series. In an embodiment of the present disclosure, the input unit 102 is attached to the production unit 104 through the feeder. Moreover, the production unit 104 is configured to perform the production of zinc oxide by utilizing the one or more feed materials containing the waste residue bearing lead and moore cake. Further, the one or more feed materials from the feeder of the input unit 102 are provided to the production unit 104 for the production process. In an embodiment of the present disclosure, the input unit 102 regulates the rate and quantity of the one or more feed materials transferred to the production unit 104. In an embodiment of the present disclosure the one or more feed materials are transferred in the pre-determined quantity.
 Moreover, the production unit 104 performs one or more operations on the one or more feed materials (as mentioned below in the detailed description of FIG. 2). The one or more operations include but may not be limited to calcination, roasting, quenching, sintering, grinding and filtering. In an embodiment of the present disclosure, a selected number of operations of the one or more operations are performed by the production unit 104. In an embodiment of the present disclosure, the temperature of the production unit 104 is continuously monitored. Further, the production unit 104 operates on the one or more feed materials and separates one or more by-products (as described below in the detailed description of FIG. 2).
 In an embodiment of the present disclosure, the one or more by-products and waste produced after the one or more operations are discharged and dumped for various purposes. Moreover, the production unit 104 is configured to perform the heating of the one or more feed materials in the rotary furnace (as described in detail in the detailed description of FIG. 2). In addition, the production unit 104 is configured to pass one or more gases through one or more chambers (as mentioned below in the patent application). Further, the production unit 104 is configured to recover the zinc in form of raw zinc oxide from the one or more gases by filtering (as explained in detail below in the patent application). In an embodiment
of the present disclosure, the production unit 104 includes a rotary kiln attached with the one or more chambers for collecting the raw zinc oxide.
 Going further, the production unit 104 is associated with the output unit 106. In an embodiment of the present disclosure, the production unit 104 is mechanically connected with the output unit 106. The output unit 106 is configured for collecting the raw zinc oxide produced by the production unit 104. In an embodiment of the present disclosure, the output unit 106 is attached to the production unit 104 through a transfer medium. In an embodiment of the present disclosure, the transfer medium transports the raw zinc oxide from the production unit 104 to the output unit 106. Examples of the transfer medium includes but may not be limited to a hopper, a rail carriage and chain conveyors. In an embodiment of the present disclosure, the output unit 106 includes a storage device. In addition, the raw zinc oxide from the production unit 104 is transferred to the storage device of the output unit 106.
 Further, in an embodiment of the present disclosure, the output unit 106 may be thermally or air sealed to prevent contamination from a foreign material. In an embodiment of the present disclosure, the foreign material includes dust, moisture, air and the like. In an embodiment of the present disclosure, the output unit 106 may be operated manually or automatically. Further, the raw zinc oxide from the output unit 106 is transferred for performing various other one or more processes. The other one or more processes include pyro metallurgical treatment of the raw zinc oxide, hydrometallurgical treatment of the raw zinc oxide and the like.
 It may be noted that in FIG. 1, the input unit 102 is attached to the production unit 106, however those skilled in the art would appreciate that there are more number of input units attached to more number of production unit 104. It may also be noted that in FIG. 1, the output unit 106 is attached to the production unit 104, however those skilled in the art would appreciate that there are more number of output units attached to more number of production units.
 FIG. 2 illustrates a block diagram 200 for showing one or more units for the production of zinc by utilizing the waste residue bearing slag and moore cake, in accordance with various embodiments of the present disclosure. The block diagram 200 includes a feeding unit 202, a rotary unit 204, a dust settling unit 206, a cooling unit 208, a filter unit 210, a collection unit 212, a fan unit 214 and a stack unit 216. It may be noted that to explain
the system elements of the FIG. 2, references will be made to the system elements of the FIG. 1.
 In an embodiment of the present disclosure, the feeding unit 202 is the feeder of the input unit 102. In an embodiment of the present disclosure, the rotary unit 204 and the filter unit 206 is a part of the production unit 104. Going further, the feeding unit 202 is configured for feeding a plurality of materials to the rotary furnace. In an embodiment of the present disclosure, the rotary furnace corresponds to the rotary unit 204. In addition, the plurality of materials includes the waste residue bearing lead, the flux material, the moore cake and the coke fines. The flux material is limestone chips added in the pre-determined amount based on the basicity of the lead plant slag. In addition, the basicity of the lead plant slag is derived on the basis of the pre-defined ratio of a mixture of the Calcium Oxide (CaO) and the Magnesium Oxide (MgO) to the Silicon dioxide (SiO2). The pre-defined ratio for the basicity lies between 025-0.50. Moreover, the moore cake is added in a pre-defined quantity. Further, the plurality of materials is fed from an upstream side of the rotary furnace. Furthermore, the waste residue bearing lead contains zinc and lead.
 In an embodiment of the present disclosure, the moore cake is added in the rotary furnace in a variation of 0-15%. In an embodiment of the present disclosure, the moore cake is added from a moore cake gantry. Moreover, the plurality of materials is pre-mixed before adding to the rotary furnace. In an embodiment of the present disclosure, the feeding unit 202 includes a feed hopper, a vibratory feeder, a conveyor belt, a feed bin, a weigh feeder and the like. The feed hopper is a vehicle with a conveyer belt and an extractor system. Also, the plurality of materials are reclaimed from an intermediate storage tank and discharged into the conveyer belt of the feed hopper. In an embodiment of the present disclosure, the plurality of materials is charged into the feed bin with a grab crane. Accordingly, the plurality of materials is discharged into the rotary furnace with a belt conveyer system.
 The feed hopper may be automatically or manually controlled. Moreover, the plurality of materials is added in a pre-determined amount and rate. In an embodiment of the present disclosure, the feed hopper is linked to the conveyor belt. In an embodiment of the present disclosure, the plurality of materials from the feed hopper is discharged on the conveyor belts. Moreover, the conveyor belt is connected with the storage bin. The plurality
of materials from the conveyor belt is discharged to the storage bin. Further, the storage bin is connected to the weigh feeder. The weigh feeder is operated by a closed loop control system enabling feeding at a controlled rate.
 In addition, in an embodiment of the present disclosure, the weigh feeder includes a panel, a load cell and a digital tachometer. The load cell measures weight of the plurality of materials. The feeding unit 202 transfers the moore cake, the lead plant slag, the coke fines and the flux material in form of layers on plain ground. Accordingly, a mixture of the layers is obtained by utilizing a tracked excavator. Water addition is done to maintain moisture in the mixture in a range of 8-10%.
 Going further, the feeding unit 202 is connected to the rotary unit 204. In an embodiment of the present disclosure, the feeding unit 202 is connected to the rotary unit 204 through a mechanical connection. In an embodiment of the present disclosure, the rotary unit 204 is a part of the production unit 104. In an embodiment of the present disclosure, the rotary unit 204 corresponds to a rotary kiln. Moreover, inside of the rotary unit 204 is lined with refractory bricks. The rotary unit 204 includes a cooling fan, a heating unit 204a, a driving unit 204b, a quenching pit and a feed tube. In an embodiment of the present disclosure, the feeding unit 202 transfers the plurality of materials to the rotary unit 204 through the feed tube. In an embodiment of the present disclosure, the feed tube transports the plurality of materials to the rotary unit 204.
 Further, the rotary unit 204 is inclined at a pre-determined angle. In an embodiment of the present disclosure, the angle of inclination is acute and small. Moreover, the rotary unit 204 includes an outlet which is sufficiently adjusted to obtain a custom filling degree. In an embodiment of the preset disclosure, the outlet may have any shape. In an embodiment of the present disclosure, the shape of the outlet includes a conical shape, cylindrical shape, ellipsoidal shape and the like. In an embodiment of the present disclosure, the rate of feeding is varied by changing an area of the outlet’s opening. Further, the rotary unit 204 includes the heating unit 204a and the driving unit 204b. In an embodiment of the present disclosure, the heating unit 204a and the driving unit 204b are present inside the rotary unit 204. In addition, the rotary unit 204 is sealed completely from outside to prevent contamination of the plurality of materials.
 Moreover, the rotary unit 204 is a pyro-processing device used to raise the temperature of the plurality of materials to a higher temperature (calcination) in a continuous process. In addition, the heating unit 204a is configured for heating a mixture of the plurality of materials fed to the rotary furnace at a pre-defined range of temperature. Further, the rotary furnace rotates at a pre-determined speed of rotation. Furthermore, the heating is done for a pre-determined interval of time. In an embodiment of the present disclosure, the pre-defined range of temperature provided for the heating of the mixture of the plurality of materials is in a range of 1100°C to 1200°C.
 Moreover, the heating of the plurality of materials is carried out by a flame burner connected on a downstream side of the rotary furnace. In an embodiment of the present disclosure, the flame burner is a part of the heating unit 204a. In an embodiment of the present disclosure, the heating is done by utilizing high speed diesel oil as a fuel in the flame burner for the heating of the plurality of materials. In addition, the flame burner includes an igniter, a refractory covered burner pipe, an inlet air valve, a combustion chamber, a pump and an oil tank. The oil tank stores the high speed diesel oil. The high speed diesel oil is added for reducing content of sulphur in the raw zinc oxide. In an embodiment of the present disclosure, the content of sulphur in the high speed diesel oil is less than 0.75%. In an embodiment of the present disclosure, the low percentage of sulphur makes the high speed diesel oil efficient and less polluting.
 In addition, the low sulphur content prevents the formation of SO2 which reacts with by-products inside the rotary unit 204. In an embodiment of the present disclosure, the flame burner is placed at a lower end of the rotary unit 204. In an embodiment of the present disclosure, there is an inlet space for an air blower near the heating unit 204a. Further, a percentage of moisture is measured in the high speed diesel oil before unloading to the oil tank. The high speed diesel oil is sucked by the pump and transferred to ignition chamber. In addition, air is sucked from the inlet air valve. Moreover, the mixture is allowed to mix in an ignition chamber. In addition, the igniter ignites the mixture and a high temperature flame is produced. In an embodiment of the present disclosure, the plurality of materials slide downwards towards the downstream side of the rotary unit 204.
 Further, the cooling fan is attached to the heating unit 204a. In an embodiment of the present disclosure, the cooling fan corresponds to an induced draft fan. The speed of the
induced draft fan is regulated with a variable frequency drive. The cooling fan transfers cool air to the flame burner for regulating the temperature of the flame burner. In an embodiment of the present disclosure, the rotary kiln includes a kiln shell, a refractory lining, a support tyre, a roller and a drive gear. The kiln shell is made up of rolled mild steel plate to form a cylinder. In addition, the refractory lining covers the kiln shell. Moreover, the purpose of the refractory lining is to insulate the steel shell from the high temperatures inside the rotary unit 204.
 Also, the refractory lining protects the steel shell from the corrosive properties of the plurality of materials. In addition, the driving unit 204b is attached with the rotary kiln. The driving unit 204b is configured for enabling the rotation of the rotary unit 204. Moreover, the rotary unit 204 rotates along the axis. In an embodiment of the present disclosure, the pre-determined speed of rotation of the rotary unit 204 is in the range of 0.40-2.50 rpm.
 Further, the driving unit 204b includes a gear train, a variable speed electric motor and a hydraulic drive. The drive gear is a girth gear. In an embodiment of the present disclosure, the girth gear of the driving unit 204b is attached to the variable speed electric motor though a gear train. The gear train is a mechanical system formed by mounting gears on a frame. In an embodiment of the present disclosure, the mechanical system contains a plurality of gears. In an embodiment of the present disclosure, the girth gear rotates the rotary unit 204. In another embodiment of the present disclosure, the rollers rotate the rotary unit 204 through the hydraulic drives. Moreover, the speed of flow of the plurality of materials is proportional to the rotation of the rotary unit 204.
 Moreover, the variable speed electric motor regulates the speed of rotation of the rotary unit 204. In addition, the speed of the rotary unit 204 is in the range of 0.40-2.50 rotations per minute for the optimum yield of the raw zinc oxide. Going further, the rotary unit 204 performs the heating of the plurality of materials. In addition, the heating is performed for reducing zinc contained in each of the plurality of materials into a metallic form. Also, the heating is performed to form vapors of zinc and lead contained in each of the plurality of materials for volatilization of zinc and lead. Moreover, the heating is performed to oxidize the formed vapors of zinc and lead in a stream of gases flowing through the rotary furnace.
 Further, the zinc oxide and lead oxide in the plurality of materials is reduced to the metallic zinc and lead by reacting with carbon mono oxide. In an embodiment of the present disclosure, the carbon mono oxide is formed by reaction of carbon dioxide with carbon (coke fines) to form carbon monoxide. Also carbon monoxide acts as a reducing agent. In addition, the metallic zinc and lead boil and are evaporated inside the rotary unit 204. Moreover, the vapors of the metallic zinc and lead travel towards the upper end of the rotary unit 204. Moreover, combustion of the high speed diesel oil produces a stream of gases.
 Furthermore, the stream of gases includes SO2, CO2, CO, NO2 and the like. Moreover, the stream of gases expelled from the flame burner and carbon monoxide move upwards in the rotary unit 204. Accordingly, the vapors of metallic zinc and lead vapor move upwards in the rotary unit 204. Further, the vapors of metallic zinc and lead react with the stream of gases to form zinc oxide and lead oxide. In an embodiment of the present disclosure, the mixture of lead oxide and zinc oxide with other effluents and dust in a gaseous state forms a flue gas. In addition, the other effluents include SO2, CO2, and the like.
 In an embodiment of the present disclosure, the production method of zinc includes discharging a slag containing the moore cake and one or impurities after the heating of the plurality of materials. In an embodiment of the present disclosure, the slag is produced due to the pyro treatment of the plurality materials inside the rotary unit 204. In an embodiment of the present disclosure, the slag is removed from the rotary unit 204 through the lower end. In addition, the lower end of the rotary unit 204 is attached to a quenching pit. In an embodiment of the present disclosure, the quenching pit utilizes water as a coolant. Further, the slag at 1000OC comes out from the rotary unit 204 and via a chute goes down into the quenching pit. The slag is cooled with recycled water like ETP treated water.
 In an embodiment of the present disclosure, a rotary kiln outlet temperature is in a range of 500 OC-850 OC. Moreover, a rotary kiln burning zone temperature is in a range 700 OC-1050 OC. Also, a pressure at a discharge end of the rotary furnace is in a range of -0.5 to -3.0 mm of Wg.
 Going further, the rotary unit 204 is connected to a dust settling unit 206. The dust settling unit 206 includes a plurality of settling chambers. Further, the rotary unit 204 is configured for passing the flue gas to a plurality of settling chambers connected to the rotary unit 204. The dust settling unit 204 is configured to separate entrained dust from the flue gas
by gravity. Furthermore, the flue gas enters each of the plurality of settling chambers through the feeding passage.
 Accordingly, the flue gas enters each of the plurality of settling chambers in which small solid particles entrapped in flue gas settles down due to reduction in velocity. In addition, the velocity is decreased by increasing a cross sectional area of a space through which the flue gas travels. Also, the velocity is reduced by collection of the settled material in one or more hoppers installed at a bottom of the dust settling unit 206. Moreover, the one or more hoppers include a first hopper, a second hopper, a third hopper and a fourth hopper. The flue gas is transferred to the plurality of settling chambers for settling large unreacted materials. Moreover, the settled unreacted materials are collected and recycled back for the feeding. In an embodiment of the present disclosure, the unreacted materials are heavy materials which are sent back to the feeding unit 202 for re-processing.
 The small solid particles are collected in the first hopper, the second hopper, the third hopper and the fourth hopper. The first hopper and the second hopper primarily contains the one or more feed materials unreacted along with slightly large particles. Further, the third and the fourth hopper stores low grade zinc. The one or more feed materials unreacted along with slightly large particles from the first hopper and the second hopper is transferred to a feed pipe for recycling. The low grade zinc obtained from the third hopper and the fourth hopper is transferred to a product bin associated with each of the plurality of dust settling chamber. Further, in an embodiment of the present disclosure, the unreacted material is transferred back to the feeding unit 202 through a valve. In addition, a cyclone is connected prior to the valve which receives the unreacted material and transfers the material to the feeding unit 202 through the valve.
 Going further, the dust settling unit 206 is connected to a cooling unit 208. Moreover, the cooling unit 208 includes one or more coolers. Each of the one or more coolers corresponds to a tubular cooler. In addition, the tubular cooler corresponds to a radiant cooler with vertical tubes for cooling hot dust laden gases with ambient air. Also, the tubular cooler includes eight parallel rows of vertical tubes. Each of the eight parallel rows is a set up of 2 U-tubes in series with each an upstream and a downstream section. Further, an internal diameter of the tubular cooler is 0.6 m, a wall thickness is 0.08m, external diameter is 0.616 m, estimated height is 20 m and length of U-tube is 40m. Furthermore, number of
installed U-tubes 16, number of parallel gas train rows is 8, surface area per U-tube is 75 m²and surface area per gas train row is 150 m². In addition, total surface area of the tubular cooler is 1200 m², cross sectional area per gas train row is 0.282 m² and an overall cross sectional area is 2.25 m².  Going further Going furtherGoing further Going further Going further, the dust settling unit the dust settling unit the dust settling unit the dust settling unit the dust settling unit the dust settling unit the dust settling unit the dust settling unit the dust settling unit the dust settling unit 206 passes passes the flue gas on to the flue gas on to the flue gas on to the flue gas on to the flue gas on to the flue gas on to the flue gas on to the flue gas on to the flue gas on to the one or more one or more one or more one or more one or more one or more coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chambers coolers connected to the corresponding plurality of settling chamberscoolers connected to the corresponding plurality of settling chambers for radiation cooling for radiation cooling for radiation cooling for radiation cooling for radiation cooling for radiation cooling for radiation cooling through atmospheric air through atmospheric air through atmospheric airthrough atmospheric air through atmospheric air through atmospheric air through atmospheric airthrough atmospheric airthrough atmospheric airthrough atmospheric air. The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to . The cooling is done to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to bring down temperature of the flue gas to below 200°C below 200°C below 200°C . T . T. The zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form he zinc oxide and lead present in gaseous form is converted to a solid converted to a solid converted to a solid converted to a solid converted to a solid converted to a solid converted to a solid converted to a solid converted to a solid converted to a solid form form. In an embodiment of the preseIn an embodiment of the prese In an embodiment of the preseIn an embodiment of the prese In an embodiment of the preseIn an embodiment of the prese In an embodiment of the prese In an embodiment of the preseIn an embodiment of the prese In an embodiment of the prese In an embodiment of the prese In an embodiment of the prese nt disclosure, t disclosure, t disclosure, the cooling unit the cooling unit the cooling unit the cooling unit the cooling unit the cooling unit the cooling unit 208 performs separation performs separation performs separation performs separation performs separation performs separation performs separation performs separation performs separation of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. of solid particles from the flue gas. The cooling unit The cooling unit The cooling unit The cooling unit The cooling unit The cooling unit The cooling unit The cooling unit The cooling unit 208 performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by performs the separation by reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal reduction in the velocity of flue gas. In addition, separation is performed by removal of dust/fumes accretions from i of dust/fumes accretions from i of dust/fumes accretions from i of dust/fumes accretions from i of dust/fumes accretions from iof dust/fumes accretions from iof dust/fumes accretions from iof dust/fumes accretions from i of dust/fumes accretions from i of dust/fumes accretions from i of dust/fumes accretions from i of dust/fumes accretions from i of dust/fumes accretions from internal surface walls of the U nternal surface walls of the U nternal surface walls of the U nternal surface walls of the U nternal surface walls of the Unternal surface walls of the Unternal surface walls of the Unternal surface walls of the Unternal surface walls of the U nternal surface walls of the U nternal surface walls of the U nternal surface walls of the U nternal surface walls of the U nternal surface walls of the U-tube by hammering. tube by hammering. tube by hammering. tube by hammering. tube by hammering. tube by hammering. tube by hammering. tube by hammering. tube by hammering. tube by hammering. Also, the Also, the Also, the cooling unit cooling unit cooling unit cooling unit cooling unit cooling unit 208 is connected to the is connected to theis connected to the is connected to theis connected to theis connected to the is connected to the is connected to the collection unitcollection unit collection unitcollection unitcollection unit collection unit collection unit 212 . . Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit Moreover, the collection unit 212 corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. corresponds to a conveying system. Accordingly, t Accordingly, tAccordingly, tAccordingly, t Accordingly, tAccordingly, tAccordingly, tAccordingly, tAccordingly, the solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide e solid zinc oxide is collected in collected in collected in collected in collected in collected in collected in the conveying syconveying sy conveying syconveying sy conveying syconveying syconveying syconveying system for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin for pneumatically transferring the solid zinc oxide to a product bin storage. storage. storage.  Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit Further, the cooling unit 208 is connected to the filter unit is connected to the filter unit is connected to the filter unit is connected to the filter unit is connected to the filter unit is connected to the filter unit is connected to the filter unit is connected to the filter unit is connected to the filter unit is connected to the filter unit is connected to the filter unit 210 . . Moreover, the filter Moreover, the filter Moreover, the filter Moreover, the filter Moreover, the filter Moreover, the filter Moreover, the filter Moreover, the filter unit unit 210 includes a includes a includes a includes a plurality of bag filters in series. The fi plurality of bag filters in series. The fiplurality of bag filters in series. The plurality fi plurality of bag filters in series. The fiplurality of bag filters in series. The plurality fiplurality of bag filters in series. The plurality fiplurality of bag filters in series. The plurality fi plurality of bag filters in series. The fi plurality of bag filters in series. The fiplurality of bag filters in series. The plurality fiplurality of bag filters in series. The plurality fi plurality of bag filters in series. The fi plurality of bag filters in series. The fi plurality of bag filters in series. The fi plurality of bag filters in series. The fi plurality of bag filters in series. The fi plurality of bag filters in series. The fiplurality of bag filters in series. The plurality fi plurality of bag filters in series. The fiplurality of bag filters in series. The plurality fi plurality of bag filters in series. The fi plurality of bag filters in series. The fiplurality of bag filters in series. The plurality fiplurality of bag filters in series. The plurality fiplurality of bag filters in series. The plurality fi plurality of bag filters in series. The fi plurality of bag filters in series. The fiplurality of bag filters in series. The plurality fiplurality of bag filters in series. The plurality fi lters includes a lters includes a lters includes a lters includes a lters includes a lters includes a lters includes a bag bag bag filter filter 210a , a bag filter , a bag filter , a bag filter , a bag filter , a bag filter , a bag filter , a bag filter , a bag filter 210b , a bag filter , a bag filter , a bag filter , a bag filter , a bag filter , a bag filter , a bag filter , a bag filter 210c and a bag filter and a bag filter and a bag filter and a bag filter and a bag filter and a bag filter and a bag filter and a bag filter and a bag filter 210d . . In addition, the cooling In addition, the cooling In addition, the cooling In addition, the cooling In addition, the cooling In addition, the cooling In addition, the cooling In addition, the cooling In addition, the cooling In addition, the cooling unit unit 208 transfer transfer transfers the flue gas to the flue gas to the flue gas tothe flue gas tothe flue gas tothe flue gas to the flue gas to the the plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more plurality of bag filters connected to the one or more coolerscoolers coolers. Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit . Moreover, the filter unit 210 colcol lect lects fine dust particles fine dust particles fine dust particles fine dust particles fine dust particles fine dust particles fine dust particles fine dust particles fine dust particles from the flue gas from the flue gas from the flue gas from the flue gasfrom the flue gas from the flue gasfrom the flue gasfrom the flue gasfrom the flue gas to obtain to obtain to obtain the raw zinc oxide the raw zinc oxidethe raw zinc oxide the raw zinc oxide the raw zinc oxide .
 Further, the bag filter 210a, the bag filter 210b, the bag filter 210c and the bag filter 210d are based on a filtration mechanism. The filtration mechanism includes but may not be limited to mechanical shaking, reverse air and pulse jet. In an embodiment of the present disclosure, the plurality of bag filters includes an inlet, a baffle plate, a dirty gas chamber, a bag, a clean gas chamber, a diaphragm valve, an outlet and an electronic sequencer. Moreover, the dirty gas chamber includes a plurality of bags. A free oxygen level is measured at the outlet of the bag filter 210a, the bag filter 210b, the bag filter 210c and the
bag filter 210d. In an embodiment of the present disclosure, the plurality of bags in the dirty gas chamber separates raw lead oxide and raw zinc oxide.
 In an embodiment of the present disclosure, the raw zinc oxide and the lead oxide settle in the plurality of bags in the form of a dust. In an embodiment of the present disclosure, the dust forms a cake of the raw zinc oxide and lead oxide. In an embodiment of the present disclosure, the cake is transferred through a transport medium. The transport medium includes a truck, a conveyor belt, a portable hopper and the like. Moreover, a gas temperature at an inlet of the plurality of bag filters is in a range of 120C-130C. Also, an oxygen level percentage at the inlet of the plurality of bag filters is in a range of 2-4.5. Further, area of each of the plurality of bag filters is 1642 m2. Furthermore, a gas flow rate capacity of each of the plurality of bag filters is 152000 m3/h. In an embodiment of the present disclosure, a grade associated with each of the plurality of bag filters is ryton.  Further, tFurther, t Further, tFurther, t Further, the filter unit he filter unit he filter unit he filter unit he filter unit he filter unit 210 is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit is attached to the collection unit 212 . In an embodiment . In an embodiment . In an embodiment . In an embodiment . In an embodiment . In an embodiment . In an embodiment . In an embodiment . In an embodiment of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit of the present disclosure, filter unit 210 is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit is connected to the collection unit 212 through through through the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection unthe transport medium. In an embodiment of the present disclosure, collection unthe transport medium. In an embodiment of the present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection unthe transport medium. In an embodiment of the present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection unthe transport medium. In an embodiment of the present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection unthe transport medium. In an embodiment of the present disclosure, collection unthe transport medium. In an embodiment of the present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection unthe transport medium. In an embodiment of the present disclosure, collection unthe transport medium. In an embodiment of the present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un the transport medium. In an embodiment of present disclosure, collection un it 212 is is is the output unit the output unit the output unit the output unit the output unit 106 . . Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit Accordingly, the filter unit 210 transfer transfer transfers the raw raw zi nc oxide to the nc oxide to the nc oxide to the nc oxide to the nc oxide to the nc oxide to the nc oxide to the nc oxide to the conveying system. Tconveying system. T conveying system. Tconveying system. T conveying system. Tconveying system. Tconveying system. Tconveying system. Tconveying system. T conveying system. Tconveying system. The zinc oxide he zinc oxide he zinc oxide he zinc oxide he zinc oxide he zinc oxide is pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for pneumatically transferred in the product bin for storage storage . . The collection unit The collection unit The collection unit The collection unit The collection unit The collection unit The collection unit The collection unit The collection unit The collection unit 212 is configured for collecting th is configured for collecting this configured for collecting th is configured for collecting this configured for collecting th is configured for collecting this configured for collecting th is configured for collecting th is configured for collecting th is configured for collecting this configured for collecting th is configured for collecting this configured for collecting this configured for collecting th is configured for collecting this configured for collecting this configured for collecting this configured for collecting th e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust e entrapped plurality of dust particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide. particles from each of the plurality bag filters for obtaining raw zinc oxide.
 In an embodiment of the present disclosure, the collection unit 212 includes a storage system for storing the raw zinc oxide. In an embodiment of the present disclosure, the production of the raw zinc oxide is carried out by optimizing a plurality of parameters associated with the rotary furnace. Moreover, the plurality of parameters include speed of rotation of the rotary furnace, moistening method of blend, temperature of the rotary furnace and feeding of excess air. The flux material is added based on a quality of the one or more feed materials fed into the rotary unit 204. The excess air is fed in a controller manner to the rotary furnace to increase a rate of reaction without cooling down the pre-determined temperature of the rotary kiln.  Going further, the Going further, the Going further, the Going further, the Going further, the Going further, the Going further, the plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters plurality of bag filters of the filter unit of the filter unit of the filter unit of the filter unit of the filter unit of the filter unit 210 areare connected to connected to connected to connected to connected to the fan unit fan unit fan unit fan unit 214 . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit 214 includes includes one or more fans one or more fansone or more fans one or more fansone or more fans one or more fansone or more fansone or more fansone or more fans . . Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an Each of the one or more fans is an
induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induced draft fan. Moreover, each of the one or more fans induc es a negative draft and a negative draft and a negative draft and a negative draft and a negative draft and a negative draft and a negative draft and a negative draft and a negative draft and a negative draft and a negative draft and a negative draft and allowallow allow s discharge of exhaust gases discharge of exhaust gasesdischarge of exhaust gasesdischarge of exhaust gasesdischarge of exhaust gasesdischarge of exhaust gases discharge of exhaust gasesdischarge of exhaust gasesdischarge of exhaust gases discharge of exhaust gases discharge of exhaust gasesdischarge of exhaust gasesdischarge of exhaust gases discharge of exhaust gases. The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit . The fan unit 214 is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit is connected to the stack unit 216 . Further, the fan unit Further, the fan unit Further, the fan unit Further, the fan unit Further, the fan unit Further, the fan unit Further, the fan unit Further, the fan unit Further, the fan unit Further, the fan unit 214 allows the dischaallows the discha allows the discha allows the discha allows the discha rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases rge of the exhaust gases through through through through the stack stack unit unit 216 connected to the one or more fans.connected to the one or more fans. connected to the one or more fans.connected to the one or more fans. connected to the one or more fans. connected to the one or more fans. connected to the one or more fans. connected to the one or more fans.connected to the one or more fans. connected to the one or more fans. connected to the one or more fans.connected to the one or more fans. connected to the one or more fans. In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit In an embodiment of the present disclosure, stack unit 216 corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere.corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere. corresponds to a chimney for discharging the exhaust gases atmosphere.
 In addition, the method provides 100 % utilization of the lead plant slag. In an embodiment of the present disclosure, the present method helps in reducing pollution of land and water by utilization of the lead plant slag. Moreover, the present method helps in increasing the yield of zinc to 80 %. Further, the raw zinc oxide can be utilized for various industrial uses.  In In an example, an example, an example, an example, an example, an example, an example, an example, a Waelz kiln isWaelz kiln isWaelz kiln isWaelz kiln is Waelz kiln isWaelz kiln is Waelz kiln is Waelz kiln is charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr charged with 10.2 mt/hr of the plurality materials. of the plurality materials. of the plurality materials. of the plurality materials. of the plurality materials. of the plurality materials. of the plurality materials. of the plurality materials. of the plurality materials. of the plurality materials. of the plurality materials. Moreover, the k Moreover, the k Moreover, the kMoreover, the k Moreover, the k Moreover, the kiln rotation iln rotation iln rotation iln rotation iln rotation is maintained at 0.80 rpm. maintained at 0.80 rpm. maintained at 0.80 rpm.maintained at 0.80 rpm. maintained at 0.80 rpm. maintained at 0.80 rpm. The amount of coke fine The amount of coke fineThe amount of coke fineThe amount of coke fine The amount of coke fineThe amount of coke fine The amount of coke fineThe amount of coke fine The amount of coke fineThe amount of coke fineThe amount of coke fine s used is s used is s used is s used is 1.53 1.53 ton/ MT ton/ MTton/ MT of the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide product productproduct. . Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials Accordingly, the mixture of plurality materials is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are is heated and zinc lead are volatilized to more than 90% volatilized to more than 90%volatilized to more than 90% volatilized to more than 90% volatilized to more than 90%volatilized to more than 90%volatilized to more than 90% volatilized to more than 90% volatilized to more than 90% volatilized to more than 90%volatilized to more than 90% volatilized to more than 90% volatilized to more than 90%. . Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done Further, the heating is done with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the with high speed diesel oil as a fuel. Moreover, the awith high speed diesel oil as a fuel. Moreover, the amount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is mount of high speed diesel oil used is 124 litres /mt of 124 litres /mt of 124 litres /mt of 124 litres /mt of 124 litres /mt of 124 litres /mt of 124 litres /mt of the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide the raw zinc oxide product productproduct. . In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are In addition, zinc and lead are from from a waste gas waste gas waste gas waste gas waste gas waste gas waste gas of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into nonof the kiln in form of a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non of the kiln in form a flue dust suitable for feeding into non -ferrous smelters. ferrous smelters. ferrous smelters. ferrous smelters. ferrous smelters. ferrous smelters. ferrous smelters. ferrous smelters. Moreover, Moreover, Moreover, Moreover, Moreover, 1.91 mt/hr 1.91 mt/hr 1.91 mt/hr of Zinc oxide (RaZinc oxide (Ra Zinc oxide (Ra Zinc oxide (RaZinc oxide (RaZinc oxide (Ra w zinc oxide) w zinc oxide) w zinc oxide) w zinc oxide) w zinc oxide) w zinc oxide) w zinc oxide) is produced produced produced produced and 90.2% of zinc zinc is is recover recoverrecover recovered . Further, the pFurther, the p Further, the pFurther, the p Further, the pFurther, the p roduct grade roduct grade roduct grade roduct grade roduct grade roduct grade roduct grade roduct grade is 53.99 % 53.99 % zinc zinc and 13.9%and 13.9% lead lead.  In another example, a In another example, a In another example, a In another example, a In another example, a In another example, a In another example, a In another example, a In another example, a In another example, a In another example, a In another example, a feed feed feed feed is prepared with prepared with prepared with prepared with prepared with prepared with 90% 90% ausmelt slag (90%)ausmelt slag (90%) ausmelt slag (90%) ausmelt slag (90%) ausmelt slag (90%) and and and 10% 10% 10% moore moore cake.cake.cake. cake. In addition, In addition, In addition, In addition, In addition, coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips coke fine and lime stone chips are are are bl ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly ended and mixed thoroughly in the in the in the feed feed feed with a JCB machine. JCB machine. JCB machine. JCB machine. JCB machine. JCB machine. JCB machine. JCB machine. Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature Kiln reaction zone temperature is maintained at around 1270 maintained at around 1270 maintained at around 1270maintained at around 1270 maintained at around 1270maintained at around 1270 maintained at around 1270maintained at around 1270 C. Accordingly, f Accordingly, fAccordingly, f Accordingly, fAccordingly, fAccordingly, fAccordingly, f Accordingly, flue gases produced lue gases produced lue gases produced lue gases produced lue gases produced lue gases produced lue gases produced lue gases produced lue gases produced areare sucked towards sucked towards sucked towards sucked towards sucked towards sucked towards sucked towards a stack side with stack side with stack side with stack side with a suction created by suction created by suction created by suction created by suction created by suction created by suction created by suction created by suction created by suction created by an ian i an induced draft fan. nduced draft fan. nduced draft fan. nduced draft fan. nduced draft fan. nduced draft fan. nduced draft fan. Moreover, the temp Moreover, the temp Moreover, the tempMoreover, the temp Moreover, the temp Moreover, the temp erature of the ferature of the f erature of the f erature of the ferature of the ferature of the f erature of the f erature of the flue gases lue gases lue gases lue gases is reduced from 695 reduced from 695 reduced from 695reduced from 695 reduced from 695 reduced from 695 reduced from 695 C to 196 C by performingby performingby performingby performing by performingby performing by performing by performing tubular cooler radiation cooling. tubular cooler radiation cooling. tubular cooler radiation cooling.tubular cooler radiation cooling.tubular cooler radiation cooling. tubular cooler radiation cooling.tubular cooler radiation cooling.tubular cooler radiation cooling.tubular cooler radiation cooling. tubular cooler radiation cooling.tubular cooler radiation cooling.tubular cooler radiation cooling. tubular cooler radiation cooling. tubular cooler radiation cooling. Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately Accordingly, approximately 70% 70% of of the material g material g material g material getsets settled in settled in settled in settled in the tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to tubular cooler and sent to a product bin via pneumatic product bin via pneumatic product bin via pneumatic product bin via pneumatic product bin via pneumatic product bin via pneumatic product bin via pneumatic product bin via pneumatic conveying.conveying. conveying.conveying. conveying.conveying. Going further, t Going further, t Going further, t Going further, t Going further, tGoing further, tGoing further, t Going further, the flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a he flue gases enter a bag filter bag filterbag filterbag filter andand 35 ppm solid particulate 35 ppm solid particulate 35 ppm solid particulate 35 ppm solid particulate 35 ppm solid particulate 35 ppm solid particulate 35 ppm solid particulate 35 ppm solid particulate 35 ppm solid particulate matter matter which which signif signifsignif ies 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from 99.99% recovery of material from the flue gases flue gasesflue gasesflue gasesflue gasesflue gasesflue gases is is collected fromcollected from collected fromcollected fromcollected from collected from collected from an an an outlet of the bag filter outlet of the bag filteroutlet of the bag filter outlet of the bag filter outlet of the bag filter outlet of the bag filter outlet of the bag filteroutlet of the bag filteroutlet of the bag filter outlet of the bag filter. Also, the f Also, the f Also, the flux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on lux material (lime stone chips) is added based on basicity asicity asicity asicity
measu measu rement which is 0.64 for the day rement which is 0.64 for the day rement which is 0.64 for the day rement which is 0.64 for the day rement which is 0.64 for the day rement which is 0.64 for the day rement which is 0.64 for the day rement which is 0.64 for the dayrement which is 0.64 for the day rement which is 0.64 for the day rement which is 0.64 for the day. Moreover, the . Moreover, the . Moreover, the . Moreover, the . Moreover, the . Moreover, the . Moreover, the . Moreover, the basicity basicity basicity basicity is 0.26 after the addition of after the addition of after the addition of after the addition of after the addition of after the addition of after the addition of after the addition of after the addition of after the addition of the flux material the flux material the flux material the flux material the flux material.
 It may be noted that in FIG. 2, the filter unit 206 includes the bag filter 206a, the bag filter 206b, the bag filter 206c and the bag filter 206d; however those skilled in the art would appreciate that there are more number of bag filters in the filter unit 206. It may also be noted that in FIG. 2, the feeding unit 202 is connected to the rotary unit 204; however those skilled in the art would appreciate that more number of feeding units are connected to more number of rotary units. It may also be noted that in FIG. 2, the collection unit 208 is connected to the filter unit 204; however those skilled in the art would appreciate that more number of collection units are connected to more number of rotary units. It may also be noted that in FIG. 2, the rotary unit 204 is connected to the filter unit 206; however those skilled in the art would appreciate that more number of rotary units connected to more number of filter units.
 FIG. 3 illustrates a flowchart 300 for the production of zinc oxide by treatment of waste residue bearing lead slag and moore cake in the rotary furnace, in accordance with various embodiments of the present disclosure. The flowchart 300 initiates at step 302. Following step 302, at step 304, the feeding unit 202 is configured for feeding the plurality of materials to the furnace. The plurality of materials includes the waste residue bearing lead, moore cake and coke fines. Moreover, the moore cake is added in a pre-defined quantity. The plurality of materials is fed from the upstream side of the rotary furnace. In addition, the waste residue bearing lead contains zinc and lead. At step 306, the rotary unit 204 is configured for heating the mixture of the plurality of materials fed to the rotary furnace at the pre-defined range of temperature. The rotary furnace rotates at the pre-determined speed of rotation. Moreover, the heating is done for the pre-determined interval of time. In addition, the pre-defined range of temperature provided for the heating of the mixture of the plurality of materials is in the range of 1000°C to 1400°C. Further, the pre-determined speed of rotation is in a range of 0.80-0.85 rpm. Furthermore, the heating is performed for reducing zinc contained in each of the plurality of materials into a metallic form; forming vapors of zinc and lead contained in each of the plurality of materials for volatilization of zinc and lead and oxidizing the formed vapors of zinc and lead in a stream of gases flowing through the rotary furnace. At step 308, the rotary unit 204 is configured for passing the flue gas to the
plurality of settling chambers connected to the rotary furnace. Moreover, the flue gas includes the plurality of dust particles containing zinc and lead in oxidized form. At step 310, the filter unit 310 is configured for recovering the raw zinc oxide from the flue gas. In addition, the raw zinc oxide is recovered by filtering the flue gas. The filtering is done for entrapping the plurality of dust particles. The flowchart 300 terminates at step 312.
 The foregoing descriptions of specific embodiments of the present technology have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present technology to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present technology and its practical application, to thereby enable others skilled in the art to best utilize the present technology and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstance may suggest or render expedient, but such are intended to cover the application or implementation without departing from the spirit or scope of the claims of the present technology.
 While several possible embodiments of the invention have been described above and illustrated in some cases, it should be interpreted and understood as to have been presented only by way of illustration and example, but not by limitation. Thus, the breadth and scope of a preferred embodiment should not be limited by any of the above-described exemplary embodiments.

Claims
What is claimed is:
1. A method for production of zinc oxide by treatment of a waste residue, the method comprising:
feeding a plurality of materials to a furnace, wherein the plurality of materials comprises the waste residue bearing lead slag, moore cake, flux material and coke fines and wherein the waste residue bearing lead slag contains zinc and lead;
heating a mixture of the plurality of materials at a pre-defined range of temperature, wherein the heating being performed for:
reducing zinc contained in each of the plurality of materials into a metallic form;
forming vapors of zinc and lead contained in each of the plurality of materials for volatilization of zinc and lead; and
oxidizing the formed vapors of zinc and lead in a stream of gases;
passing a flue gas comprising a plurality of dust particles containing zinc and lead in oxidized form; and
recovering the zinc oxide from the flue gas, wherein the zinc oxide being recovered by filtering the flue gas and wherein the filtering being done for entrapping the plurality of dust particles.
2. The method as recited in claim 1, wherein the zinc oxide being recovered by utilizing a plurality of settling chambers connected to the furnace, wherein the flue gas being transferred to the plurality of settling chambers for settling large unreacted materials, wherein the settled unreacted materials being further collected and recycled back for the feeding and wherein the settling being done by reducing velocity of particles present in the flue gas.
3. The method as recited in claim 2, wherein the flue gases being further passed on to one or more coolers connected to the corresponding plurality of settling chambers for performing radiation cooling through atmospheric air for bringing down temperature of the flue gas to below 200°C, wherein the zinc oxide and lead oxide present in gaseous form being converted to a solid form and the solid zinc oxide being further collected in a
conveying system for pneumatically transferring the solid zinc oxide to a product bin for storage.
4. The method as recited in claim 2, further comprising transferring the flue gas to a plurality of bag filters connected to the one or more coolers for collecting fine dust particles and transferring the zinc oxide to the conveying system and wherein the zinc oxide being pneumatically transferred in the product bin for the storage and wherein the plurality of bag filters being connected to one or more fans for inducing a negative draft and allowing discharge of exhaust gases through a stack connected to the one or more fans.
5. The method as recited in claim 1, wherein the moore cake being added in the furnace in a variation of 0-15%, wherein the furnace rotates at a pre-determined speed of rotation, wherein the pre-determined speed of rotation of the furnace being 0.40-2.50 rpm and wherein the furnace corresponds to a rotary furnace.
6. The method as recited in claim 1, wherein the pre-defined range of temperature provided for the heating of the mixture of the plurality of materials being in a range of 1100°C to 1200°C and wherein each of the plurality of materials being fed from an upstream side of the furnace.
7. The method as recited in claim 1, further comprising discharging a slag containing the moore cake and one or more impurities after the heating of the plurality of materials.
8. The method as recited in claim 1, wherein the heating of the plurality of materials being carried out by a flame burner connected on a downstream side of the furnace and wherein the heating being done by utilizing a high speed diesel oil as a fuel in the flame burner for the heating of the plurality of materials.
9. The method as recited in claim 8, wherein the high speed diesel oil being added for reducing content of sulphur in the zinc oxide and wherein the content of sulphur in the zinc oxide being less than 0.75%.
10. The method as recited in claim 1, wherein the production of the zinc oxide being carried out by optimizing a plurality of parameters associated with the furnace, wherein the plurality of parameters comprises the speed of rotation of the furnace, moistening method of blend, temperature of the furnace, addition of the flux material, amount of the plurality of materials added to the furnace and controlled feeding of excess air.