DESC:METHOD OF MAKING COAL BRICKS FOR MANUFACTURING COKE AND ASSOCIATED SYSTEM
PRIORITY STATEMENT
[001] The present application hereby claims priority to Indian patent application number “201821046335” filed on 07 December 2018, the entire content of which are hereby incorporated herein by reference.
FIELD OF THE INVENTION
[002] The present disclosure relates generally to a method of manufacturing coke. More particularly, the present disclosure relates to a method of manufacturing coke using coal bricks of various sizes and of different coal blends.
BACKGROUND OF THE INVENTION
[003] Coal being a fossil fuel is used in numerous industrial applications. It plays an important role in day to day life and is used in various industrial applications, for example, to generate heat for production of steam to make power, to melt raw iron ore in a blast furnace, for melting ore in kilns in sinter plants, for calcination of lime in kilns in Soda Ash units, for manufacture of ferro alloys industries and in small foundries and coupolas.
[004] Coke, is a fuel with high carbon content, is generally obtained by burning coking coal in absence of air. It is desirable to use coal with high carbon content to produce good quality coke, with low ash content. Conventionally, for the manufacture of coke, a high quality of bituminous coal with caking property is burnt in closed chambers, running at high temperature in absence of air. Bituminous coal with high carbon content generates low ash metallurgical coke which is used in metallurgical applications. The bituminous coal is mined and washed to improve the quality and to discard the contaminants present. It is then further crushed to size of minus 3mm and stored in overhead silo bins having a storage capacity of around 100 metric tons (MT). The storage capacity of the overhead bins may vary from individual capacity of plants.
[005] For manufacture of metallurgical coke, the most common and the earliest non-recovery technology in India, comprises refractory chambers of beehive shape, made of bauxite/siliminite base bricks, which have the characteristics to hold temperatures for a very long time. These ovens have discharge facilities on front sides. The chamber size of these ovens can accommodate around six metric tons of raw crushed coking coal in one charge. The crushed coking coal in such typical ovens is charged on drag (iron round bar of 100 mm thick, placed prior to charging, through the length of the oven, with inner end having support of stopper of rail line). The oven is initially heated over a period with the help of wood and thermal coal, till the temperature of approximately 900°C is achieved. Thereafter the crushed coking coal is fed from the top of the oven, with tubs of capacity of around 1 MT or with help of a charging car, through the charging holes.
[006] The coking coal due to the presence of impurities in the form of volatile matter (approximately 25%) immediately catches fire. The coal burns in layers in regular portion and re-solidifies with rise in temperature, due to caking properties. After burning of entire volatile matter, the coke formation is complete, and the hot coke formed on the drag is pulled out of the oven with the help of a winch and immediately quenched with water to avoid the loss of coke due to further burning due to contact with air in the atmosphere. The coke is then shifted to the screening unit where it is segregated and cut into required sizes and dispatched.
[007] The state-of-the-art has evolved wherein blends of coal including but not limited to hard coking coal and soft coking coal but also non-coking coal are being used for manufacturing the coke. Typically, beehive ovens are used for small scale production of coke.
[008] As mentioned above, conventionally the coal is charged from the top of the oven resulting in a high fugitive emission during charging. In addition, the existing top charging ovens are not capable of controlling the pollution and emissions of the oven gases and the pollution caused by spillage of the coal while charging. Moreover, the existing ovens generate a high variable pressure on the walls of the oven, as per the property of coal blend, thus decreasing the life of the re-factory bricks coke ovens.
[009] Further, the existing ovens manufacture coke from coal cakes of larger sizes. Due to large size of the coal cakes, the coke obtained will be in variable assorted sizes and cannot form large proportion of the coke of required size/sizes. Thus, the coke produced from larger size coal cakes may be required to be cut into various sizes as per requirement and thus incur an additional cost of cutting.
[0010] There exists a need for a method and a system of producing the coke in a non-recovery coke oven that do not require top loading of the coal. Further, there is a need for a method and a system that do not require cutting of large size coke and save on the additional cost of cutting the large sized coke obtained and avoid generation of more quantity of under-size coke. The under-size coke will have lower realization.
SUMMARY OF THE INVENTION
[0011] This summary is provided to introduce a selection of concepts in a simple manner, which are further described in the detailed description of the disclosure. This summary is not intended to identify key or essential inventive concepts of the subject matter nor is it intended to determine the scope of the disclosure.
[0012] Briefly, according to an exemplary embodiment, a method comprises preparing a coal blend by blending a plurality of coals in a predetermined ratio. The coal blend is fed to a hopper. The coal blend is then discharged from the hopper to a plurality of cavities of a mold dye. Force is applied on the coal blend via a hydraulically operating stamping machine to compact the coal blend in the plurality of cavities to yield a plurality of coal bricks of desired dimensions. The force is applied in a single stroke of the hydraulically operating stamping machine. After application of the force, the hydraulically operating stamping machine is released away from the mold dye. The mold dye is lifted in an upward direction to release the plurality of coal bricks onto a moveable plate.
[0013] In another embodiment, a system comprises a mold dye that includes a plurality of cavities. The plurality of cavities is configured to receive a coal blend from a hopper. The hopper is positioned adjacent to the mold dye. A hydraulically operating stamping machine is configured for applying a force to compress the coal blend to form a plurality of coal bricks in the plurality of cavities. The system includes a moveable plate positioned below the mold dye. The moveable plate is configured to receive the formed plurality of coal bricks. The system further comprises a non-recovery coke oven configured to receive the plurality of coal bricks, wherein the non-recovery coke oven is configured to carbonize the plurality of coal bricks into.
[0014] The summary above is illustrative only and is not intended to be in any way limiting. Further aspects, exemplary embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE FIGURES
[0015] These and other features, aspects, and advantages of the exemplary embodiments can be better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:
[0016] FIG. 1 is a flow chart illustrating a method of manufacturing a plurality of coal bricks of required size, according to an embodiment of the present disclosure;
[0017] FIG. 2 is a flow chart illustrating a method of manufacturing coke in a non-recovery coke oven, according to an embodiment of the present disclosure; and
[0018] FIG. 3 is a line diagram illustrating a system for manufacturing a plurality of coal bricks, according to an embodiment of the present disclosure.
[0019] Further, skilled artisans will appreciate that elements in the figures are illustrated for simplicity and may not have necessarily been drawn to scale. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the figures by conventional symbols, and the figures may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the figures with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.
DETAILED DESCRIPTION OF THE INVENTION
[0020] For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the figures and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
[0021] It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the invention and are not intended to be restrictive thereof.
[0022] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not comprise only those steps but may comprise other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by "comprises... a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components. Appearances of the phrase “in an embodiment”, “in another embodiment” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The system, methods, and examples provided herein are illustrative only and not intended to be limiting.
[0024] In addition to the illustrative aspects, exemplary embodiments, and features described above, further aspects, exemplary embodiments of the present disclosure will become apparent by reference to the drawings and the following detailed description.
[0025] Referring to FIG. 1, a method 100 of preparing a plurality of coal bricks of required dimensions using various blends of coals is described. Accordingly, in one embodiment, at 102, a coal blend is prepared by blending a plurality of coals in a predetermined ratio. At 104, the coal blend is fed to a hopper. At 106, the coal blend is discharged from the hopper to a plurality of cavities of a mold dye. At 108, a force is applied on the coal blend via a hydraulically operating stamping machine to compact the coal blend in the plurality of cavities to yield a plurality of coal bricks of desired dimensions. At 110, the hydraulically operating stamping machine is released away from the mold dye. At 112, the mold dye is lifted in an upward direction to release the plurality of coal bricks to a moveable plate.
[0026] The coal blend is prepared by blending one or more coking coals, for example, prime hard coking coal, soft coking coal and some proportion of non-coking coal. As is known in the art, coal with high carbon content is often considered to be most suitable for producing good quality coke. However, depending on the quality and grade of the coke required, an appropriate blend of various types of coals can be used in accordance with embodiments of the present disclosure. In some embodiments, 70% of prime hard coking coal is mixed with 30% soft coking coal. In some embodiments, 60% of prime hard coking coal is mixed with 40% soft coking coal. The coal blend thus prepared is fed to a hopper. In general, the hopper is a funnel shaped receptacle for receiving the coal blend.Whereas in this process the quality of coke can be maintained by using blend with low proportion of prime and high proportion soft coals, along with proportions of non-coking coal, based on the quality of other prime and soft coals being used.In some cases even larger proportions of non-coking coals can be used, to make coke.
[0027] Additionally, in some embodiments, a pre-processing step is carried out prior to feeding the coal blend into the hopper. Specifically, an automated or manual weighing system is used to feed exact quantity of each variety of coal into the hopper. Further, an additional pre-processing step includes maintaining uniform moisture levels in the coal blend. This coal blend is then mixed thoroughly in pan mixtures and fed into the hopper. In general, the hopper is a funnel shaped receptacle for discharging the coal blend.
[0028] At 106, the coal blend is discharged from the hopper to a plurality of cavities of a mold dye. As shown at 108, when a force is applied on the coal blend via a hydraulically operating stamping machine, the coal blend is compacted in the plurality of cavities. This yields a plurality of coal bricks of desired dimensions, depending on the size of each of the plurality of the cavities. The hydraulically operating stamping machine applies required force to compact the loose coal blend for producing the required number as well as required size of the coal bricks per hour. The size of the plurality of coal bricks produced varies as per the size requirement of the end use of the size of coke. In one embodiment, the size of each of the coal brick of plurality of coal bricks may range from 150-200mm in width, 150-200mm in length and 100-125mm in height. This size of each of the coal bricks is altered as per final size requirement of the coke. In one embodiment, approximately 7-10 tons of coal bricks are produced per hour, which can also be modified, increased or decreased, as per requirement.
[0029] The plurality of coal bricks is unlike the large coal cakes produced in a conventional coke manufacturing process. Since the plurality of coal bricks are comparatively of smaller sizes than the conventional large coal cakes, the hydraulically operating stamping machine of the present disclosure would cost approximately four times lesser than the conventional stamping machines. Also as the size of each of the plurality of coal bricks is small, the force applied via the hydraulically operating stamping machine is adequate and uniform, unlike in the larger coal cake making machines, where the force is distributed over a wider area and hence the effective impact of pressure for compression of the coal per square cm, would be effectively lower.
[0030] In the present disclosure, the force/compactness over the plurality of coal bricks may be adjusted, increased or decreased as desired, whereas in the conventional coal cake stamping machines, the pressure may be decreased but may not be increased beyond a specified limit. In the present disclosure, as the pressure may be adjusted, a maximum bulk density of 1.2 of the plurality of the coal bricks may be obtained. The coke with a bulk density of 1.2 is of the best quality. As pressure may be adjusted as desired, it results in a well compacted coal blend, and hence lower grade coking coals may be used to yield the coke of desired parameters. In some embodiments, the plurality of coal bricks is made with precisely measured portions of one or more type of coking coals, thereby enabling use of the inferior quality of coals without hampering the quality of the of coke.
[0031] Because of the smaller size of each of the plurality of coal bricks, the breakage of the plurality of coal bricks is less. Due to higher impact force of the hydraulically operating stamping machine on smaller area of the plurality of coal bricks, the moisture content in the plurality of coal bricks can be kept around 10-12%, to attain the desired bulk density and also to act as a binding agent.
[0032] At 110, the hydraulically operating stamping machine is released away from the mold dye. At 112, the mold dye is lifted in an upward direction to release the plurality of coal bricks to a moveable plate.
[0033] FIG. 2 is a flow chart illustrating a method 200 of manufacturing coke according to an embodiment of the present disclosure.
[0034] At 202, the plurality of coal bricks of required size is stacked on the moveable plate manually or automatically. At 204, the moveable plate including the plurality of coal bricks is mechanically transported away from the hydraulically operating stamping machine. At 206, the moveable plate having the stacked plurality of coal bricks is placed at a front opening of a non-recovery coke oven. At 208, a hydraulic pusher pushes the moveable plate with stacked plurality of coal bricks into the non-recovery coke oven chamber from the front side of the non-recovery coke oven and after completely charging the plurality of coal bricks, the moveable plate is retracted at 210. The plurality of coal bricks undergoes carbonization process inside the non-recovery coke oven chamber and produces coke. While reference is made to the use of moveable plate for transporting coal bricks into the non-recovery coke oven, it is to be noted that various other means for transporting may be implemented depending on the architecture of coking plant and construction of the non-recovery coke oven. At 212, the coke produced is pulled out from the non-recovery coke oven with the help of a hydraulic puller and finally the coke produced is quenched with the water as shown at 214. The coke produced from the plurality of coal bricks has a better physical composition and lower fraction of an approximately ten-millimeter (mm) size coke.
[0035] The coke is segregated according to the size using multi deck vibrators. The coke obtained from uniformly dimensioned plurality of coal bricks requires very less further processing to obtain desired fractions of coke.
[0036] The spillage of the coal is minimized, and loss of the coal is negligible unlike in the conventional coke manufacturing processes, as plurality of coal bricks are charged into the oven, instead of loose coal. The manufacturing process does not require any special design for the oven. Any basic design non-recovery coke oven may be used to make ` coke. Further, since the plurality of coal bricks are charged from the front side of the oven unlike the top loading ovens, there will be very little or no fugitive emission during charging of the coal neither from the oven doors . The fugitive emission may be approximately ninety percent less. Moreover, the pollution caused by spillage of the coal and the emission of coke oven gases is negligible as compared to the top charging coke ovens.
[0037] It is to be noted that the stacked plurality of coal bricks is placed inside the coke oven chamber in such a manner that there is always space left between the stack of the plurality of coal bricks and the wall of the oven. This ensures that the pressure on the walls of the oven is minimum, and thus increases the life of the re-factory ovens.
[0038] With embodiments of the present disclosure, the charging of the plurality of coal bricks ensures that the heat in the non-recovery coke oven is controlled and the carbonization takes place under low back pressure and yields higher production of coke within a given capacity of any oven. In addition, due to high pressurized formation of plurality of coal bricks, density of the coal is very high, and thus more volume of coal is available in similar space as compared to the conventional top charging ovens. Hence, the production capacity increases. In addition, good quality coke can be produced even in most basic design of non-recovery coke ovens, which has coke wharf on both sides. Hence, with lesser capital investment, the profitability increases.
[0039] Further, the method does not require constructing any underground platforms for charging the coal and discharging the coke from coke oven. As the coke is produced in required sizes, there is lesser cost of cutting the large sized coke as in the conventional process.
[0040] According to an embodiment, a system 300 comprises a hopper 302 for feeding loose coal blend 315 to a mold dye 306 via a feeder 304. The mold dye 306 comprises a plurality of cavities 308. The system 300 includes a hydraulically operating stamping machine 311 that applies a force on the mold dye 306. The hydraulically operating stamping machine 311 comprises a plurality of high pressure jacks 312 and a plurality of low pressure jacks 316. The plurality of low pressure jacks 316 are positioned in an inner frame of the hydraulically operating stamping machine 311. The low pressure jacks 316 vertically regulate the movement of the mold dye 306. The hydraulically operating stamping machine 311 has a plurality of main punches 314 made of MS, fabricated as per the size and number of the coal bricks in the mold dye 306. The plurality of main punches 314 is regulated with the force from the plurality of high pressure jacks 312. The high pressure jacks 312 are attached to side smaller capacity jacks 318, which control the vertical movement of the plurality of high pressure jacks 312 prior to compression and after compression. The plurality of main punches 314 is lifted up with the help of low pressure jacks 316 after the loose coal blend 315 is compressed into plurality of coal bricks 320 and the plurality of coal bricks 320 are released onto a moveable plate 310 shifted to a stacker plate on a hydraulic jack (not shown). The moveable plate 310 is positioned below the mold dye 306. The system 300 includes a non-recovery coke oven 322 configured to receive a plurality of coal bricks 320 formed by the application of the force F via the hydraulically operating stamping machine 311 on the mold dye 306. A hydraulically operating pusher (not shown) pushes the plurality of coal bricks 320, stacked as per required volume/quantity to be charged inside the non-recovery oven 322 and a hydraulically operating puller (not shown) pulls out the coke formed after carbonization of the plurality of coal bricks 320 in the non-recovery oven 322.
[0041] The plurality of low pressure jacks 316 and the plurality of high pressure jacks 314 are made of induction steel. The hydraulically operating stamping machine 311 comprises a pressure pump with an output of 40 liters/min. The hydraulically operating stamping machine 311 further comprises a pressure control system of size 16/30 and comprises a pilot valve to control oil pressure. The hydraulically operating stamping machine 312 may include a chiller to maintain oil temperature and to prevent from rising. Further, in some embodiments, there is a batching plant with water flow to mix coal blend and water, as per the requirement. The mold dye 306 is made from a single MS block of 80 mm thick.
[0042] The hydraulically operating stamping machine 311 helps in maintaining the required bulk density of each brick of the plurality of coal bricks for making good quality of coke. In this system, coke of good quality is made by use of more inferior coal such as low grade bituminous coking and non-coking coals, and thereby reduces the cost of manufacturing and increases the probability of the unit.
[0043] In some embodiments, the system may comprise pan mixers that are connected to an automatic water mixing system. The automatic water mixing system may regulate the flow of water for maintaining required levels of moisture in the coal blend. The pan mixer may have a capacity to moist 20 to 40 MT of coal blend per hour, which can be further modified as per requirement. The coal blend from the pan mixer may be delivered to an over-head hopper with capacity of 1MT.
[0044] In some embodiments, the hopper 302 is placed above the hydraulically operating stamping machine 311. The coal feeder 304 is placed below the hopper 302, whose horizontal movement is operated with help of the small capacity jack 318. The feeder 304 maintains the flow of coal blend 315 into the plurality of cavities 308 of the mold dye 306. Two low pressure jacks 316 in an inner frame of the hydraulically operating stamping machine 311 vertically regulate the movement of the mold dye 306, which is placed under the main punch 314 of the hydraulically operating stamping machine 311. After the mold dye 306 is filled to the brim with loose coal blend 315, a feeder plate is shifted vertically over it and the loose coal blend is levelled to the surface of the plurality of cavities 308 of the mold dye 306. The hydraulically operating stamping machine 311 has the main pressure punch 314 made of MS plates, fabricated depending on the required size and number of the coal bricks in the mold dye. The main punch 314 is regulated with the pressure from the high pressure jacks 312. These large hydraulic jacks 312 are attached to smaller capacity jacks, which control the vertical movement of these jacks prior to compression and after compression. The required pressure is delivered on the coal blend 315 inside the mold dye 306, with the help of a plate, regulated by pressure of large hydraulic cylindrical jacks 312. After the thrust stroke, the main punch 314 is lifted upward and the cycle is repeated. The pressure on the coal blend inside the plurality of cavities 308 of the mold dye 306 varies as per the blends of coals and the quality of coke desired. The standard bulk density of 1.2 is generally maintained. The system is an enclosed system, wherein all coal handling is done through conveyor and stacker systems, which helps to avoid wastage of coal while handling shifting, charging of coal and discharging of coke. This mechanized systems of discharge of coke also reduces the time from the manpower and the risk, as compared to the earlier drag type of system.
[0045] The present disclosure improvised the method of coal charging and introduced a hydraulically operating stamping machine to deliver a plurality of coal bricks of required sizes. The average production of these bricks is approximately 7-10 MT per hour depending upon the size of the each of the plurality of coal bricks. Due to high compaction by the hydraulically operating machine, the required density of coal bricks for making good quality coke is easily attained. The force that the hydraulically operating machine applies may range from 2 MT to 10 MT per square inch. This force helps using inferior quality of coking coal and using higher percentage of non-coking coals.
[0046] In the present disclosure, the plurality of coal bricks is charged from the front of the oven unlike the conventional methods, where the loose coal is charged from the top of the oven. A hydraulically operating puller and pusher, installed on an overhead crane, are used for charging the plurality of coal bricks and for discharging of coke in place of the conventional drag type system. The overhead crane comprises a hydraulic jack system that helps the sideway as well as to and fro movement of the plurality of coal bricks. The overhead crane also helps in discharging the hot coke from inside the oven onto the coke quenching wharf. The formation of the plurality of coal bricks helps charging more quantity of coal in the same volume of a given coke oven, due to high compaction and thus results in higher yield of coke. Because of more volume of coal inside the oven, the temperature, which initially would have been around 900 ° to 1000 ° C, crosses over 1300° C in the present disclosure, thus making coke faster than in the conventional process. The capital investment of coke ovens of present disclosure is nearly 50% lower than the conventional coke manufacturing systems using large coal cake type stamping and charging system.
[0047] While specific language has been used to describe the disclosure, any limitations arising on account of the same are not intended. As would be apparent to a person skilled in the art, various working modifications may be made to the method in order to implement the inventive concept as taught herein.
[0048] The figures and the foregoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples. Numerous variations, whether explicitly given in the specification or not, such as differences in structure, dimension, and use of material, are possible.
,CLAIMS:We claim
1. A method (100) comprising:
preparing (102) a coal blend by blending a plurality of coals in a predetermined ratio;
feeding (104) the coal blend to a hopper;
discharging (106) the coal blend from the hopper to a plurality of cavities of a mold dye;
applying a force (108) on the coal blend via a hydraulically operating stamping machine to compact the coal blend in the plurality of cavities to yield a plurality of coal bricks of desired dimensions, wherein applying the force is performed in a single stroke of the hydraulically operating stamping machine;
releasing (110) the hydraulically operating stamping machine away from the mold dye; and
lifting (112) the mold dye in an upward direction to release the plurality of coal bricks to a moveable plate.
2. The method of claim 1, wherein applying the force on the coal blend via the hydraulically operating stamping machine comprises applying the force via a plurality of high pressure jacks of the hydraulically operating stamping machine, and wherein releasing the hydraulically operating stamping machine away from the mold dye comprises releasing via a plurality of low pressure jacks of the hydraulically operating stamping machine.
3. The method of claim 1, further comprising stacking the released plurality of the coal bricks on the moveable plate fixed on a hydraulic jack.
4. The method of claim 3, further comprising pushing the moveable plate into a non-recovery coke oven to place the plurality of coal bricks into the non-recovery coke oven, wherein the plurality of coal bricks is placed leaving an empty space between the plurality of coal bricks and a wall of the non-recovery coke oven.
5. The method of claim 4, further comprising retracting the moveable plate from the non-recovery coke oven after placing the plurality of coal bricks in the non-recovery coke oven.
6. The method of claim 5, further comprising removing coke after carbonization of the plurality of coal bricks for quenching the coke.
7. A system (300) comprising:
a mold dye (306) comprising a plurality of cavities (308) configured to receive a coal blend (315) from a hopper (302), wherein the hopper (302) is positioned adjacent to the mold dye (306);
a hydraulically operating stamping machine (311) configured for applying a force to compress the coal blend (315) to form a plurality of coal bricks (320) in the plurality of cavities (308);
a moveable plate (310) positioned below the mold dye (306), and wherein the moveable plate (310) is configured to receive the formed plurality of coal bricks (320); and
a non-recovery coke oven (322) configured to receive the plurality of coal bricks (320), wherein the non-recovery coke oven (322) is configured to carbonize the plurality of coal bricks (320) into coke .
8. The system (300) of claim 7, wherein the hydraulically operating stamping machine (311) comprises a plurality of high pressure jacks (312), a plurality of low pressure jacks (316) and a plurality of main punches (314), wherein the plurality of high pressure jacks (312) are configured to regulate the force (F) on the plurality of main punches (314), and wherein the plurality of low pressure jacks (316) are configured to lift the plurality of main punches (314) away from the mold dye (306).
9. The system (300) of claim 8, wherein the plurality of high pressure jacks (312) is configured to apply the force in a range of 250 MT to 1500 MT on the coal blend (315).
10. The system (300) of claim 7 is configured to manufacture 7-10 tons/hour of plurality of coal bricks (320) each having a width in a range from 150-200mm, a length in a range from 150-200mm and a height in a range of 100-125mm