A process for manufacturing steel rebar is described having steps of casting billet / bloom with chemical composition of 0.05 - 0.3 wt.% carbon, 0.4 - 1.65 wt.% manganese, 0.1 - 0.8 wt.% silicon, up to 0.05 wt.% niobium, up to 0.05 wt.% vanadium, up to 0.05 wt.% titanium, up to 0.05 wt.% aluminum, up to 0.04 wt.% Su...

This invention relates to a device for recovery of waste heat and chemical energy of molten slags in the form of hydrogen-rich gas and steam in a counter-current reactor, consisting of: an inclined surface for flow of molten slag; a semi-cylindrical reactor resting on the inclined surface where, molten slag and wate...

An online method for advance-prediction of "lumb" type break-outs to initiate preventive measures in a continuous casting process of steel manufacturing using thin-type slab caster, the process comprising the steps of passing the molten steel through a water-cooled substantially vertically-aligned lubricated mou...

In this invention, ultra-low carbon ferrochrome is produced from refractory grade chromite ores with prior oxidation treatment and then subjected to thermit process using aluminum as prime reductant. Pre-oxidation of chromite ore helps in improving the reactivity of chromite ores and results in achieving better ...

The invention relates to a flux composition for a single step hot dip coating one steel tubes in a Zn-AI alloy bath maintained under atmospheric environment, comprising: 80-85% of zinc chloride (ZnCI2) by weight; 15-20% of ammonium chloride (NH4CI) by weight; wherein the zinc chloride and ammonium chloride salts...

The invention relates to a coating process of Zn-Ni-Fe ternary alloy on steel surface with improved paintability, weldability, corrosion and powdering resistance properties for application in automotive components, comprising :subjecting a cold rolled steel sheets to alkali cleaning followed by rinsing and electropl...

The LD Slag primarily comprises of 43.5% CaO, 1.2% P, 2.7% Al2O3, 18.4% Fe, 14.7% SiO2 and 4.8% MgO.The slag is mostly discarded owing to its poor chemical and physical properties. However the presence of high CaO in slag makes it suitable for recycling application provided the phosphorus can be lowered to less than...

A reagent and a method of synthesizing the reagent having a chemical structure and chemical formula as C12H25N(C2H4NH2)2 has been described. Reference Fig.

The invention relates to a notched miniature tensile specimen, comprising:at least two grip sections at the two ends; of the specimen; a reduced section positioned centrally in between the two grip sections, such that the transition fillet in between the grip sections and the reduced sections has a constant curvatur...

A process for simultaneous removal of total suspended solid (TSS) and total dissolved solids (TDS) from gas cleaning plant (GCP) water of steel making process is disclosed. The process involves mixing of GCP water with slag quenching water followed by CO2 purging. The invention provides a process for substantial re...

A system for detection and estimation of Fe content in galvannealed coatings, a fast and non-contact process, comprising: collection of galvannealed IF steel sheets with substrate thickness 0.8 mm with coating weights ranging from 60 g/m2 to 100 g/m2 from a Cold Rolling Mill (CRM), cutting of sheets into samples hav...

A chromium free water based coating is developed for treating Galvannealed or galvanized steel surface. The coating is based upon hybrid condensation product of water soluble sol-gel solution prepared from solution containing one or more organofunctional silanes. The said silane solution is hydrolised at pH 4-6.5...

The invention relates to an improved process to produce low ash clean coal from high ash coal involving 100% solvent recovery with 75% lower energy consumption, the process comprising: (i) forming a slurry of coal fines in organic solvent with a small amount of co-solvent; (ii) maintaining said slurry in a reac...

The invention relates to a two stage process of leaching Mn-oxide containing furnace dust, for making manganese or MnO2 from comprising the steps of leaching of Mn-oxide containing furnace dust with sulfuric acid in a first stage; said acid being present in an amount effective to dissolve soluble manganese and c...

The invention relates to a method in an apparatus for improved web inspection of rolling coils in rolling mills. The method comprising the steps of determining the rolling Speed from the Analog voltage signal representing a speed signal; inputting the analog signal into a microcontroller for converting and output...

The new method is an improved casting-rolling production route for producing Fe-3.2Si Cold-rolled grain oriented (CRGO) electrical steel which consists of controlled small amounts of C and Al. This essentially eliminates the high temperature slab reheat/homogenization treatment at about 1300 oC. The method provides ...

The present invention relates to a two-stage process for Separation in a coal leaching process Silicon/Aluminum based Compounds from Spent Hydrochloric Acid, in which the solution is heated in a first stage to a temperature of around 80 °C to convert the unstable silicon tetrachloride to silicon oxide, and treating ...

This invention relates to a method of producing interstitial free high strength (IFHS), formable and weldable steel sheet / strip comprising the steps of: preparing a steel slab of IFHS (interstitial free high strength) grade having a composition in weight % of C < 0.0030, Mn – 0.5-0.6, S – < 0.01, P – 0.02-0.03, Si...

The present invention relates to an improved water-box quenching system in a thermo mechanical treatment (TMT) rolling process of rebars to maximize cooling of rebar surfaces, the TMT process comprising heating of billets to rollable temperature, converting the billets to a desired section by passing through a pa...

Accordingly there is provided an improved species injection lance for species injection through nozzle into a reactor, comprising; a main pipe having a predetermined inner diameter, the main pipe having sideway provisions to insert a lance pipe, the lance pipe on insertion forming an angle at an exit plane with resp...

The invention relates to an improved belt conveyor assembly with automatically adjustable rubber pads to maintain desired clearance between a Skirtboard and the belt conveyor assembly to present spillage of materials transported along the belt conveyor, comprising a conveyor belt supported by a plurality, of tro...

An improved process for coal demineralization comprising steps of preparing a coal slurry, feeding the alkalized coal slurry into a high pressure vessel, heating the coal slurry to temperature range of 120- 200°C, pressurizing the high pressure vessel using inert gas at 5-10 bar, maintaining the coal slurry temperat...

With these above constraint identified we at SP#3 set about in improving the granulability index (GI) of SP#3 base mix coming out from the drum. For this we adopted a three-step strategy. In the First SD of Sep-06 the inner Tega liner which had become worn out were replaced. The lifters inside the drum for mixing wa...

The invention relates to an improved expansion bellows adaptable to hot blast carrying system of blast furnaces, comprising a first plurality of refractory-lined shaped bricks (A,B) disposed at different locations throughout the hot blast carrying system by maintaining a gap between the each refractory-lined shaped ...

The invention relates to a method of producing coke, the method comprising the steps of preparing a coal charge; carbonizing the coal charge in the oven over a total cycle duration at a flue temperature in the range of 1000 to 1400 degrees Centigrade; allowing said carbonized coal to soak; and stopping the heat i...

According to the invention there is provided an improved float-sink apparatus adaptable to evaluate the efficiency and output quality of iron-ore benification process, comprising a fluidization column receiving water via a homogeneous chamber from a water tank by means of an electrically operated pump.The water flow...

This invention relates to a method of imparting rotational flow of stirring gas through the tuyeres at the bottom of a top-and-bottom-blown converter vessel to achieve enhanced mixing in the bath. The method comprises dividing the total number of tuyeres into multiple groups and imparting a flow of the stirring g...

The present invention relates to a simple equipment provided with a hopper and a vibratory feeder. The vibratory feeder will have a facility to control the frequency of vibration in the range of 10-80 Hertz. It will also have an online facility to measure the operation frequency of the vibrator. Method A feed cons...

The present invention relates to a non destructive testing method to predict / assess torsion value in tyre bead wires by electromagnetic sorting technique and comprises of collecting a plurality of different coils of tyre bead wires and making a plurality of specimens from each coil, the said specimen being of a pr...

The invention relates to a composition of eco-friendly thermal insulation color coating on the inner surface of galvanized steel sheets for roofing applications. The high solid (< 90 %) hybrid coating composition consists of a renewable resource based polymer and low cost silica rich materials with good thermal ...

The invention relates to a method of fatigue testing thin ductile steel sheets of less than 2 mm thickness under fully reversed stress and strain amplitudes comprises machining of the specimen (S) to produce hour-glass (A) during stress controlled or dumbbell configuration (B) of the specimen (S) during strain co...

The present invention relates to a process for measuring the concentration of nanofluids by ultrasonic technique which consists of preparing a sample cell by filling it with nanofluids, creating an ultrasonic pulse by an electrically stimulating source of transducer, making the pulse to travel through the liquid ...

The invention relates to a method for making a Poly-condensed silane comprising steps of mixing amino propyl tri-methoxy silane (AMEO) with 3-gycosidoxy propyl tri-methoxy silane (GPTMS) in proportion 1:1 to form an organo functional silanes group, hydrolysing the organo functional silanes group in an acid water hav...

The invention relates to a real-time virtual sensor system for virtually measuring online wire size in each pass at wire drawing machines, comprising a plurality of virtual sensors each assigned to capture several technical parameters of the wire drawing machine including real-time size and speed of movement of ...

This invention relates to a method of producing low phosphorus steel containing below 0.010% phosphorus from high phosphorus hot metal charged in a single slag basic oxygen furnace comprising the steps of maintaining a low slag basicity in liquid steel in the range of 2.5 to 2.7 at 1600°C to 1650°C with FeO% in the ...

This invention relates to a method of producing a hot rolled advance high strength ductile steel with low yield to tensile strength ratio to generate articles comprising making a steel slab of compositions in wt% consisting of carbon 0.1 to 0.2, silicon 0.30 to 0.70, manganese 1.2 to 1.70, phosphorus 0.005 to 0.02, ...

This invention relates to a method of preparing anti-corrosive hybrid sol-gel film coating on zinc or zinc alloy coated metallic substrates comprising the steps of preparing a mixture of sol-gel from hydrolisable silicon alkoxides, sodium venadate solution combined with colloidal silica in a beaker and vigorously st...

The present invention provides a method for steam curing of steel making slag including reduction of free alkaline earth oxide with volume expansion less than 2% by injecting steam in a vessel charged with slag under variable conditions of pressure and temperature in shorter time compared to prior Arts. The slag is ...

This invention relates to a process of producing cold rolled batch annealed bake hardening steel article and a process of preparing the same by comprising an ultra low carbon steel in a LD converter of composition in weight % C - < 0.0035, Mn 0.2-0.6, Al -<0.03, S-<0.02, P - 0.03 - 0.06, N - <0.0050 and Nb and/or Ti...

The invention provides a corrosion resistant thermomechanically treated reinforcing bar based on addition of corrosion inhibiting elements to a selected alloy chemistry. The rebar containing C: 0.21-0.24 wt %, Mn: 0.90-1.10 wt %, Si: 0.10-0.15 wt%, P: 0.035 wt %, S: 0.035 wt %, Cu:0.30-0.40 wt%,Co: 0.20- 0.35 wt...

The present disclosure discloses a passivation composition for plasma zinc coated rebar comprising of chromium ion from chromium compound 5-40 (g/l), sulphate ion from a sulphate compound 2-10 (g/l), fluoride ion from a fluoride compound 0.05 to 1 (g/l) and rest water to make one litre solution, all being mixed toge...

FeTiP precipitation temperature range is around 700°C and batch annealing is usually done around this temperature. As a result, precipitation of FeTiP interferes with recrystallization annealing resulting in poor {111} texture formation. Not only that, it also precipitates in preference to TiC, as a result of th...

The present invention relates to a process for producing an improved heat-exchange fluid from two-dimensional carbon nanomaterials, comprising graphite oxide prepared by Hummers method; synthesizing the graphite oxide to produce exfoliated graphene (EG); dispersing the chemically functionalized EG (f-EG) in comme...

The present subject matter relates a method and system for automatic size characterization of plurality of green balls being fed into an induration furnace using image processing techniques. The system includes an imaging device (102) and illumination device (101) which is installed above conveyor belt (105) in the ...

A process for enriching iron values from ultra-fine iron ore slime.The current invention provides a process to enrich iron values from ultra-fine iron ore slime. High alumina iron ore slime of size less than 45 micron is collected from beneficiation plant. The slime is then thoroughly mixed with water using a mecha...

The invention relates to a cold rolled steel sheet with improved strength and ductility, including in percent by mass: 0.15-0.35% of C; 1.00-3.00% of Mn; 0.80-1.50% of Al; and 0.35-0.65% of Si; the microstructure of the steel comprising: 60-80% of bainitic ferrite; 10-30% of polygonal ferrite; 10-15% of ret...

The invention relates to the LD Slag fines are reacted with sulphuric acid at a particular range of temperature for a particular time range while rotating the reactants, a slurry containing gypsum and excess sulphuric acid is obtained. The excess sulphuric acid is neutralised using a pre mixed lime slurry of particu...

The present disclosure relates to a field of chemistry, disclosing a composition comprising shellac, resin, crosslinking agent and solvent, optionally along with graphene, wherein the composition suppresses corrosion rate of graphene coated substrate and imparts better anti-corrosion properties to the substrate when...

Cold rolled grain oriented steels (CRGO) are used as transformer core material as they have very low core loss and high magnetic flux density. These electrical and magnetic properties of CRGO steels are obtained through high silicon content (>3%) and large grains having {110}<001> texture, known as Goss texture. The...

A process for producing 70 grade high-carbon ferromanganese alloy comprises steps of forming a blend mix of Manganese (Mn) ore feed in, in range of 64.2% – 64.5% (by wt.) and size fraction of 10 - 70 mm; Dolomite feed in, in the range of 7 - 8% (by wt.) and size fraction of 10 - 70 mm; Slag feed in, in the range of ...

This invention provides a solution to use the waste pickling liquor to a valuable conversion coating on the TMT rebar surface for temporary corrosion protection of rebar during transportation and storage. This invention describes the effective surface treatment process to obtain a black surface on the rebar. The bla...

The present invention relates to an improved process for the production of refractory bricks using ferrochrome slag, comprising the steps of sieving raw ferrochrome slag through BS sieve no. 5, 18 and 150 to separate the fractions of -5 +18, -18+150 and -150 respectively to identify as coarse, medium and fine; m...

The invention relates to a method for optimizing on real time the fuel efficiency during the process of steel making in a blast furnace based on a control system, the control system operatively connected to the blast furnace and comprising at least one microprocessor with human-machine interface; a mass energy balan...

The present invention is related to a fire resistance steel composition and process for preparing the same. The fire resistance steel of the current invention has a fire resistance yield ratio of 0.5 or more at a temperature of 600°C for a minimum duration of 60 minutes. In accordance the target room temperature ...

A method for producing alkaline earth metal salt based soft coatings on multishaped metallic structures comprising; subjecting paraffin wax and metal hydroxide in a ratio of 1:2 to the step of oxidation to form the resin part, mixing the resin part with non-polar solvent, adding anti corrosive, surfactant emulsi...

A preamble reactive barrier made of steel slag for the removal of industrial waste water contaminants comprising of five consecutive chambers. A water inlet system is made in the 1st chamber which is the reservoir of plant waste water and from this chamber water flows down to from first to fifth chamber sequentially...

The invention relates to a process to produce agglomerates of sinter, comprising steps of preparing a green mix, charging the green mix into sinter machine for assimilation of cake, the cake comprising magnetite as one of the major constituents then spraying inert or nitrogen gas (N2) or combination over assimilated...

A galvanized steel substrate comprising an Fe-Zn intermetallic layer with enlarged crystal size on a steel surface, a zinc layer on the Fe-Zn intermetallic layer and a copper rich precipitate in the zinc layer.

The invention relates to an improved process to produce low ash clean coal from high ash coal with high recovery of enhanced quality of clean coal, the process comprising forming a slurry of coal fines in organic solvent with a small amount of co-solvent; maintaining said slurry in a reactor at a temperature range ...

The invention relates to an improved die holder system with a single motor to concurrently operate a rotating die holder device and a lubricant stirrer device to enhance die life in machines drawing metal wires, the system comprising a die holder device releasably attached to a soap lubricant device, the soap lubric...

The invention relates to a mixed rubber formulation for application as clad on squeeze rollers comprises (all in parts by 100 weight of rubber): Hypalon Polymer 50-90, Neoprene W Polymer 10-50, MgO 0-5, Litharge 0-10, Epoxy 0-10, Nickel dibutyl dithiocarbamate (NBC) 1, Furnace Black 20-30, Cumarone Indene (C.I) Resi...

This invention relates to a process for the decarburization of low-manganese ferroalloys comprising the steps of subjecting a manganese ore to melting in the presence of coke, quartz and dolomite to obtain slag and metal, separating said slag and metal and melting said metal casting said slag followed by comminution...

The present invention relates to a high-strength hot-rolled steel sheet with a minimum tensile strength of 590 MPa and method of manufacturing the same. The high-strength hot-rolled steel sheet of the current invention finds use in manufacturing automotive components such as suspension and chassis components and ...

N.A.

The invention relates to a mechanical flange coupler for end-to-end connection of reinforcing bars is made of two elongated components (C, D). Each elongated component has a half cylindrical shell and two longitudinal flanges (G) which are attached to the half cylindrical shell edges along its axial direction. Ea...

Slime doped barium ferrite magnets having chemical formula as BaO-2(FeO)- n(Fe2O3) with an appropriate range of n-value in said formula between 6 and 9; a sintered body of said formula furthermore having an average particle size of less than 5µm and the maximum coercivity, of more than 3500Oe. ...

A process of early detection of water leakage through any of the tuyeres of a blast furnace based on differential water flow rate, comprising the steps of: determining a differential flow rate through a tuyere by processing the data representing the differential flow of each tuyere collected from the inlet and outle...

The invention relates to a laser beam processing with/without overlapping for surface hardening of full size (100mm x 100mm) steel sheet of low-carbon and microalloyed steel for producing automotive components with improved surface properties and mechanical strength, the process comprising the steps of: providing mi...

The present invention relates to a process to beneficiate high silica and/or alumina and/or aluminosilicate iron ore fines, comprising a two stage pre-concentration of iron ore slurry in a pre-concentration unit to separate coarser iron ore particles from ultra fine feed iron ore slurry and collecting the underflow;...

The present invention is provided with a modified braking system in caterpillar dumper comprises a Air tank (A) to cater air in the braking system, a Duo treadle valve; a service paddle (c) pressing of which air flows both in front brake line and a rear master cylinder to stop rear wheel; an on line front brake leve...

The invention relates to a process for enriching chromite values of ultrafine particles in chromite tailings (< 37 μm) by selective flocculation and desliming technique to produce higher grade of Cr2O3 concentrate, the process comprising the steps of grinding as received chromite tailing samples by a ball mill t...

The invention discloses a process of treating primary steelmaking slag with carbonaceous material to obtain a lime rich powder having P2O5 content less than 1% for recycling in iron & steel making processes as flux and metal values for special application . In this process, the primary steelmaking slag is treated ...

A process for manufacturing a steel wire rod comprising steps of casting a billet, heating the billet in a preheating zone of a reheating furnace at temperature 950 - 1050 deg. C, heating the billet in the heating zone of the reheating furnace at temperature 1050 - 1150 deg. C, heating the billet in the soaking zone...

A process to determine in real-time the proportions, distribution and tracking of burden receipt in a blast furnace producing hot metal and slag with desired chemistries, comprising the steps of: preparing an optimal burden proportion of the burden materials consisting of proportions of ore, sinter, pellet, coke and...

The present invention relates to a method of splitting the feed in to differing size products, wherein feed can be coal, metallic, non-metallic, mineral ores or the like. According to the method, binary mixture of spheres or beads is prepared which is characterized by its size ratio and percentage of large sphere...

The invention relates to a process produce to micro-pellets of steel waste materials with high cold handling strength, comprising the steps of : mixing blast furnace flue dust, ESP dust, DE dust and other suitable ultrafine dusts generated in steel plant to obtain a mixture; mixing a binder or LD sludge with the mix...

A novel method based on Composite Burnout Potential (CBP) selecting a particular coal and/ or coal blend can be represents as: CBP of Coal=(R-S-T-U)/(V+W-X) Where,R = 500 ? (%C + (2.1 ? Ash) + (2 ? IM) + VM),S = 5 ? (%C + VM) ? (IM + (1.1 ? Ash),T = 5 ? (IM^2 + (1.1? Ash^2) + (2.1 ? Ash ? IM)), U = 5 ? 10^4 V = 50...

A physicochemical process for upgaradation of low grade manganese ores has been developed which comprises collecting the low grade manganese ore (Mn/Fe>1%, Mn/Fe<1), crushing into fines of 0-0.5 & 0-3mm to undergo leaching using oxalic acid; filtration; photo reduction of solution to get iron oxalate; heat treatment...

A process for removing gangue matter coating alumina and silica from low grade iron ore and iron ore reject slime comprising: adding the sodium hydroxide to iron ore at 80-95°C to form alumino-silicate sodium salt; subjecting the soluble alumino-silicate sodium salt to the step of washing following by filtration...

A process for manufacturing a galvanized steel product with at least one layer of nickel rich Zn-Ni intermetallic over steel substrate comprises steps of coating a steel substrate with nickel (Ni) of thickness 1.0 µm - 5.0 µm for 30-60 min in a nickel bath and galvanizing the Ni coated steel substrate in a zinc (Zn)...

A process for upgrading iron content and lower alumina content of waste steel slag comprising cooling the steel slag; crushing the steel slag to less than 6mm, subjecting the enriched steel slag to the step of magnetic separation, screening the non-magnetic fraction to obtain -6 + 0.5 mm and -0.5 mm fractions, s...

This invention relates to a process established for real time estimation of the optimum raw material distribution of a running blast furnace at any stage of operation for improving production control. This process uses the raw materials of blast furnace burden as an input and an evolutionary method towards that ...

A low reduction degradation index is desired in Iron ore sinter. Indian iron ore fines contain a high percentage of alumina and this has a deleterious effect of sinter quality, particularly RDI. This invention proposes a method for improving the RDI of sinter by increasing the CaO content and the suction pressure...

A composition of hot-rolled bake hardening steel with YS ≥ 400 MPa, UTS ≥ 500 MPa, % E1 ≥ 30, BHI ≥ 30 MPa for automotives comprises: C ≤ 0.01 Wt. % Mn ≤ 2.5 Wt. % S ≤ 0.012 Wt. % P ≤ 0.12 Wt. % Si ≤ 0.1 Wt. % Al ≤ 0.1 Wt. % N ≤ 0.009 Wt. % Ti ≤ 0.1 Wt. % Nb ≤ 0.1 Wt. % B 10-40 ppm

A multi-steel substrate with improved corrosion resistance, characterized by coating consisting of copper (Cu), nickel (Ni) and cromium (cr), wherein the coating sequence comprising one bottom layer of cu; three intermediate layers of Ni; and one top layer of cr, wherein the coating appearances and the thicknesses o...

The invention relates to a method for determining ductile-brittle-transition-temperature (DBTT) of a steel sample, the method comprises steps of calculating fracture strength of a first notched steel sample at a first temperature, calculating yield strength of a second steel sample at the said first temperature, rep...

During the blast furnace operation, ascending gases passing through the packed bed are sometimes disconnected and radically escape from the furnace without any heat exchange and reaction to the burden. This phenomenon is known as Channeling. When it happens the ascending gas remains largely unutilized leading to...

A process for improving coke strength of coke comprising: crushing the prime coking coal (1) and weakly coking coal (2) subjecting the crushed coals to the step of screening; seperating art the different fractions: (+3.2,-3.2+1.6, -1.6+0.8, -0.8+0.5, -0.5+0.2 and -0.2) A, B, C, D, E & F respectively, subjecting ...

A nanomaterial engine coolant mixture being a mixture of hybrid carbon nano-material (HCN) and an engine coolant, the HCN is in proportion of 0.015 volume % of the engine coolant, the engine coolant is in proportion of 70:30 for water : coolant (by weight) respectively, the HCN is obtained by an ultrasonication of 2...

The invention relates to a coating formulation where 100 parts by weight formulation constitutes from (a) 40-60 parts of styrene acrylic resin (b) 0. 2 to 1 parts chromium from any of water soluble chromium compound (c) 1 to 3 parts of 2-amino 2-methyl 1-propanol (AMP) (d) 1-6 parts of Polyethylene wax and (e) r...

The present invention relates to the recovery of rare earth elements from blast furnace slag using hydrochloric acid to extract lanthanum, cerium, and neodymium. The multi-step process involves digesting blast furnace slag containing rare earth elements with a dilute HCL solution while leaving calcium and silica in ...

The invention relates to a system for real-time measurement of rhomboidity of hot billet comprising a high resolution camera unit, an embedded hardware unit which hosts an analysis software, a telephoto lens to focus billet cross section image onto the CCD surface, a camera enclosure arrangement for imaging syst...

The present invention relates to an improved process for microbial dephosphorisation of LD slag for utilisation in steel making. This invention particularly relates to the optimization of process parameters and use of novel microbial isolates. The microbial isolates screened from LD slag dump site were found to be a...

The present disclosure relates to an apparatus (100) to facilitate flow of molten metal stream. The apparatus comprises a conduit (16) with an inlet (17) and an outlet (18) configured to conceal a portion of the molten stream, and at least one shroud (50) is mounted on conduit (16). The shroud (50) comprises first a...

A non-destructive arrangement (100) for assessment of mash seam weld comprising an ultrasonic transducer (104)sealed and housed within a chamber (108) to transmit and receive ultrasonic waves to and from a mash seam weld through a constant acoustic coupling contact between the ultrasonic transducer (104) and the mas...

The invention is related to a briquetting composition prepared from steel wastes such LD sludge and then mixed with Ladle furnace slag along with other additives such as lime. The process involves mixing metallurgical dust/fines/sludge/mill scale/agglomerate dust having size less than 6 mm with ladle furnace slag, o...

The invention relates to a method to produce lubricating powder with enhanced lubrication properties applicable in a continuous steel casting process, comprising preparing a mould powder mixture by mixing pulverized or mechanically crushed elements of CaO, SiO2, Al2O3, Na2O + K2O, FeO2, MnO, with carbon particles at...

This invention relates to a heating control model for Batch Annealing Furnaces used in steelmaking. The heating, soaking and cooling phases of a batch annealing process are divided into many small time segments. An Artificial Neural Network (ANN) based on time series predicts the forward trajectory of the temper...

The invention relates to an improved method of spheroidize annealing of hypereutectoid steel wires with reduced cycle time, comprising the steps of providing at least a standard length of hypereutectoid steel wire having about 0.6 to 0.8% of carbon in a heating furnace; directly heating the steel wire in the fur...

The invention relates to a process for effective separation of iron from gangue materials, comprising : subjecting the iron ore to a grinding step by shearing techniques; screening the iron ore sample to below 5mm, wherein the original sample containing around 64% of Fe.

The invention relates to a process for preparing at least one microcapsule to provide self-healing properties to corrosion-resistant coating compositions, comprising the steps of mixing in a container deionized water and polyvinyl alcohol of 5 wt% at room temperature under continuous mechanical stirring mode; dis...

Magnesium oxide and Aluminium powder in the mass ratio of 2:1 is mixed and made to tablets in a hydraulic press. A prefixed amount of tablets are disposed in the fabricated graphite reactor (1) having a flange (2). A top flange (14) is fixed to the flange (2) of the reactor (1) by "C" clamps. A gas port (11) in t...

The present disclosure discloses a method for heat treating an iron-carbon alloy. The method comprises acts of heating the iron-carbon alloy to a first pre-determined temperature at a pre-determined heating rate, holding the iron-carbon alloy at the first pre-determined temperature for a pre-set period of time. The ...

The invention relates to an improved dewatering process for ultrafine iron ore slime of size less than 10 micron to achieve a moisture content in ultrafine iron ore slime cakes, to 20% (by weight), the process comprising the steps of conducting a thickening process where optimized dose of cationic coagulant foll...

A tundish bottom modification is disclosed to reduce the skull volume at the end of casting sequence. The tundish includes a recessed bottom at the outlet to create comparably more steel height as steel drains out of tundish to avoid vortexing. The recess shape and size design is outlined considering ease of deskull...

The invention is related to a briquetting composition prepared from steel wastes such LD sludge and then mixed with Ladle furnace slag along with other additives such as lime. The process involves mixing metallurgical dust/fines/sludge/mill scale/agglomerate dust having size less than 6 mm with ladle furnace slag, o...

The invention relates to a process for removing halides from waste water effluents comprising : reduction of chloride compounds from industrial effluents by addition of aluminum compounds at pH 12 at different temperature; subjecting the compounds to a step of removing and followed by filtration in a mix reactor...

The invention relates to a real time method of automatic inspection of tuyers in blast furnace to reduce downtime of the furnace, the method comprising the steps of : on-line acquiring of digital operational data of the tuyeres including associated blast furnace data by a plurality of CCD cameras disposed as an a...

In this invention, a ferromagnese alloy with = 0.5% C by weight is produced from combination of manganese sources, like manganese-iron bearing ore and medium carbon silicomnagnese (Mn: 50-55% Wt. basis). The ore is subjected to reduction roasting and then subjected to thermit process using aluminum and medium carbon...

The invention relates to the beneficiation process of chromite areas, a huge amount of chromite tailings is generated, which contains substantial amount of ultrafine chromite particles. The chromite tailings are generally rejected for further processing and stored in the tailing ponds. For further utilization of the...

The present invention is related to a development of steel with inherent improved fatigue properties and process of manufacturing the same. The fatigue ratio of the developed steel is greater than 0.5 with the endurance strength in excess of 230 MPa. The steel is designed such that it is readily hot formed/cold form...

The iron ore processing plants use wet drum scrubbers and washing to scrub away the coatings of clay minerals. The feed to the drum scrubbers comprises of iron ore feed along with water at 50% solids. The scrubbing of iron ore particles result in scrubbing away of loosely adhering clay coatings thus reducing the alu...

A method for making interstitial-free steel comprising steps of casting steel using composition as Carbon (C) = 0.005-0.007, Manganese (Mn) = 1.5-2.5, Sulphur (S) = 0.003-0.012, Phosphorus (P) = 0.07-0.12, Silicon (Si) = 0.05-0.4, Aluminum (Al) = 0.03-0.1, Nitrogen (N) = 0.005-0.009, Titanium (Ti) = 0.01-0.05, Niobi...

A process for making Iron ore pellets comprising: preparing the raw materials, subjecting the raw materials to the step of green pellet formation, and hardening the green balls by heating

Within the continuous casting process of the steel manufacturing chain where molten steel is passed through a water-cooled near-vertically-aligned lubricated mold of rectangular cross-section about a meter long to emerge in the form of a continuous strand consisting of a solidified shell encapsulating molten mate...

The present disclosure discloses a method for recycling slag produced during steelmaking process. The method comprises acts of introducing a pre-determined quantity of boron oxide (B2O3) into the slag to form a mixture, treating the mixture with at least one carbonaceous reductant at a first pre-determined temperatu...

The present invention relates to a method for production of periclase-forsterite-spinel refractory material from water granulated ferrochrome slag. MgO enrichment through grinding, compaction and sintering route in the composition of water granulated slag increases its refractoriness. The ratio of and in the ...

The process of the current invention describes a novel way of increasing coke strength after reaction of a given quality of coal. The process involves mixing conventionally crushed coal with a coal crushed by shearing forces. The coal blend thus produced by mixing the two coals crushed or grinded by different techni...

The present invention relates to dielectric coating formulation for solar module where a separate adhesive layer is not required for applying the formulation to the solar module. Preferably, the solar module is a light weight solar module. Figure 1

The invention relates to an integrated process for beneficiating a coal comprises steps of preparing an aqueous alkali solution, the aqueous alkali solution having concentration of 15-25% (w/w), preparing a coal slurry, the coal slurry being prepared by mixing the coal with the aqueous alkali solution in such a way ...

An annealing simulator (100) comprises a hot chamber (104), a detachable cold chamber (108) and a sample mounting arrangement (160). The cold chamber is coupled to the hot chamber (104) and the detachable cold chamber (108) comprises a sample mounting arrangement (160), the sample mounting arrangement (160) being co...

The present subject matter relates a method and system for determining steel and slag analysis for basic oxygen furnace (BOF). The BOF monitoring system works on first principle, i.e., Mass Balance, process knowhow, and past data which calculates steel and slag analysis throughout the blow at fixed time interval (ty...

The sealing arrangement in the twin output shafts of drive gearbox of bar mill consists of disposing in the said arrangement an oil throw (2) as main sealing element, double radial lip seals (9) as back up sealing element an oil flow restrictor (4) to control oil flow and a free flow oil drainage system (1) when the...

A process for determining grinding energy of an iron ore fines comprising steps of determining phases of an iron ore sample in percent, encapsulating the iron ore samplein a mold using cold setting epoxy resin, determiningKnoop hardness no.(K) of the various phases of the iron ore sample at 50 gm. load, taking weigh...

The present disclosure discloses a method for real-time monitoring of a heat treatment process. The method comprises acts of receiving, by a computing unit, temperature data of fluid flowing in a furnace comprising a plurality of specimens, from a control unit at predetermined time intervals, wherein the control uni...

A new method and an acoustic wave guide has been proposed by the use of which, adequate physical distance may be maintained between the source of the sound and the sensing element or microphone. Most acoustic sensors being delicate in construction and susceptible to electrical noise, cannot be utilized in industrial...

A continuous reactor system for handling high throughput in an Ultra High Lime Aluminium (UHLA) process for optimum reduction of chloride level in the waste water, the system comprising at least one reagent preparation unit; at least two centrifugal pumps; at least one dosing unit; a continuous stir tank reactor; an...

The invention relates to an improved method to accurately determine the swelling properties of coal and identification of thermoplastic zone, comprising the steps of : forming a coal pellet with powdery coal sample of - 100 mesh size; placing the coal pellet with coal sample in a tube furnace having external thermo...

A process for making a hot rolled high strength steel (HRHSS) product comprising steps of casting a steel slab with composition C: 0.18 – 0.22, Mn: 1.0 – 2.0, Si: 0.8 – 1.2, Cr: 0.8 – 1.2, S: 0.008 max, P: 0.025 max, Al: 0.01 – 0.15, N: 0.005 max, Nb: 0.02 – 0.035, Mo: 0.08 – 0.12 rest iron (Fe) and incidental ingre...

The improved direct charge transfer (DCT) chute with enhanced life consists of an improved intermediate stone box having supports of square box section (1) with a web at the center, pin supported (8) box supports, toe guard of intermediate stone box provided with additional support (4) at its back, supports of the s...

A small component of integrated profile cleaning machine comprising of one rectangular shaped steel tank (1) having one top open ride, is provided with a perforated steel air pipe (3) disposed around the inside periphery of the tank (1) and connected to a vertical open end pipe (4) for compressed air inlet; a dra...

The present invention discloses an arrangement of bridging the gap provided between entry side table and exit side scrap table during the up cut shearing of weld part of coil in cold rolling mills and a process for the same. The arrangement comprises of a swing type attachment comprising of a curved plate, two th...

A flexible fixture for measuring staves thickness in bend cooling channel used in blast furnace comprising a guide rod flexibly joined with a bend section, the guide rod being configured to rest at a horizontal section of a bend cooling channel, the bend section being configured to rest at a curve section and furthe...

A/B

A water-based lubricant composition for metal working operations comprising: clay material of 1µ particle size; deflocculating agent, additives and water to make a dispersed solution.

The present invention relates to an improved method of inspecting presence of water in cooling section of bright annealing furnace for tube annealing. A pipe (3) is connected to an extended pipe (4). The extended pipe (4) is connected to a drain valve outside the cooling zone so that a man on the ground floor ca...

A SYSTEM FOR OPENING AND CLOSING OF SPOOL STOPPER PROVIDED IN THE BUCKET DISPOSED FOR COLLECTION OF SPOOL IN A COLD ROLLING MILLS The invention relates to a system for opening and closing of spool stopper provided in the bucket disposed for collection of spool in a cold rolling mills. The said system comprising...

A process for extraction of pure silica from low grade coal and other low grade silicious mineral ores comprising the steps of: a)extract of metal inclusion present in the coal by addition of sodium hydroxide in a ratio varying from 1:2 to 1:4 at temperature range of 80-95°C; b) extracting silica and alumina in t...

This invention relates to a method of operating a single strand tundish under a maximum operating level of molten steel therein, the tundish comprising a floor having an outlet, a pour zone, and side walls extending upwardly from the floor, the side walls extending above the maximum operating level of molten stee...

The invention relates to a process under paraequilibrium condition to produce a fully pearlitic microstructure (<98%) in hypoeutectoid steel, the other alloying elements such as herein described remaining fixed, the fully pearlitic microstructure is developed under minimum 0.35 wt% carbon without any isothermal ...

An improved process of galvanizing high strength steel substrate to enhance zinc coatability and zinc adhesion, comprising the step of: depositing an intermediate metallic layer by one of an electro plating and an electroless plating technique, wherein one of a solution containing nickel ions and a solution conta...

A system of insulating an enclosure accommodating electronic devices operating at a temperature of 60 degree Celsius while the temperature outside of the enclosure is as at high temperature between 1200-1400°C by adapting different layers of high performing insulating materials and phase change materials, the sy...

A method for smelt reduction of high grade refractory chromite ores having Cr2O3 content > 50 weight %, MgO content> 5 weight %, Al2O3 > 2 weight %, chromium to Iron ratio > 2.6 and refractoriness index > 2.5, in submerged arc furnace comprising: determining the input quantity of chromite bearing ores in the inpu...

1. A process setup of sealed external coating of steel tubes (4) comprising: A horizontal table (1) with a longitudinal slot (2); a pneumatic cylinder 1 with a piston head, which is mounted on said table (1) and aligned with said slot (2); said piston head of cylinder 1 is connected to a fixture 1 carrying a vertic...

The invention relates to an improved process for production of high purity magnetite from hematite particles collected as steel plant waste the process comprising the steps of: i) charging hematite particles into a fluidized bed reactor and raising the temperature of the reactor in the range of 400-750 ºC, ii) passi...

The invention relates to a method of producing Yellow Calcium Sulphate from LD Slag fines of -6mm after recovering the metallic iron, the method comprising the step of: reacting LD Slag fines, water, and a sulfuric acid solution at a range of temperature and for stipulated time and neutralise the slurry with lime fi...

The invention relates to a process for removing colour from BOT water of coke oven effluents comprising: removing cyanide compounds from the coke oven effluents by adding to the effluents a coke by-product material with pH 8-9 at normal temperature; subjecting the soluble compounds to a step of removing; and sep...

The present invention relates to a system of removing a taper sleeve (2) from a Tungsten Carbide ring (1) deployed in rolling of bar comprises of a mainframe, a hydraulic cylinder, a pump with pressure gauge to operate the cylinder. Two parallel rails (8) are disposed for accommodating the movement of the trolle...

The invention relates to a method for fabricating a thin film solar cell. The method provides depositing an insulating barrier layer and active layers (n-i-p junction) on a metallic substrate by hot wire chemical vapour deposition (HWCVD) technique. The top transparent conducting Aluminium doped Zinc oxide layer ...

The invention relates to a process of producing a drawn wire product with bend values of at least 15 obtained within a composition range 0.6-1.1%C, 0.5- 0.9%Mn, 0.10-0.5 Si, 0.006-0.01%N, 0.009-0.025 % S and 0.01-0.035% P, Balance Fe (all values in wt%) for bead application in automobile tires, wherein a hot rol...

The invention relates to a process for dewatering of furnace sludge including gas cleaning plant ultrafine particles to produce solid cakes with reduced moisture applicable to agglomeration process, comprising the steps of : conditioning the slurry in a condition tank by adding a pH regulator and stirring with the a...

The invention relates to a system for recovering waste heat from the cast housesand similar technical installations of primary metallurgy plants, comprising a first thermionic converter module to capture the waste heat from the hot metal and slag runners in the cast house; a second thermionic converter module to...

The invention relates to a system for mixed convective heat transfer in a reservoir augmented by application of ultrasonic wave, a heat reservoir having at least one chamber, the chamber accommodating water for heating by a heater; a heating means for heating the water; a transducer disposed external to the reservoi...

The present invention is provided with a process to produce tailored microstructure blank to enhance localized strength and formability in commercially automotive grade steel comprises the steps of, flame heating the steel in a definite area from a burner nozzle; and measuring the temperature of steel with an in...

NA

The present invention relates to a device for detection of nucleation stage of vapour bubbles formed during boiling of nanofluids, comprising a transparent glass plate supported over a metal ring; the metal ring holding a droplet of nanofluid, and disposed over a heater such that a substantial portion of the met...

The invention relates to a non destructive testing process for segregation of detective joints from acceptable joints in fabric belts of fabric conveyor belts by pulse echo velocity technique, comprising providing a plurality of different portions of a fabric belt; forming a plurality of specimens from each porti...

The invention relates to a method for oxidation of non-agglomerated chromite ore fines in one of tunnel kiln and rotary kiln process to obtain oxidized chromite ore fines for production of ferrochrome/charge chrome.

According to this invention, there is provided a method of applying this organic coating on galvanized tubes to enhance corrosion resistance of the tubes comprising applying the TOC formulation in a continuous process on the full length of the Gl tube subjecting the coated Gl tube to the step of wiping and dr...

A method for extraction of pure silica as a byproduct from the mixture of coal and iron ore in a process of chemical reaching of coal, the method comprising the steps of treating in a digester pulverized coal with caustic (NaOH) solution at a process temperature between 90°C to 99°C, the amount of caustic solution i...

A gripping arrangement for an in-situ deformation stage comprises a pair of grips, each grips comprise a pair of extension, the pair of extension protrudes out from an edge of each grips, each extensions comprises a grip hole, the grip holes of respective pair of grips are coaxial to each other, a sample have two en...

A vortex type slag dart for enhanced separation of slag and molten steel during tapping operation in a steel making process adapting a Basic Oxygen Furnace (BOF), the slag dart comprising a rod shaped member (4) vertically disposed and downwardly extending to form a dart stem (2), the stem (2) being disposable ov...

An eco-friendly composition of corrosion resistance coating for steel substrates comprising: 10-60% by weight is sol-gel solution 0.5-2% by weight is Nano pigment 0.5-2% by weight is Flash rust inhibitor 1 to 20% by weight is active corrosion resistance pigment 0.5-5% by weight is Neutralizing agent 0.5-5% by...

The invention relates to a method to recover silicomanganese grade ore concentrate from low grade manganese ore fines comprising the steps of grinding of the low-gradient ore fines of >0.2mm into <0.2mm size fines; removing the aluminosilicates in a first stage floatation step at pH 7 using Oilec acid collector;...

An improved process to produce low ash clean coal from high ash coal with substantially complete solvent recovery, the process comprising forming a slurry of coal fines in a N-Methyl-2-pyrrolidone (NMP) with a small amount of Ethylenediamine (EDA); maintaining said slurry in a reactor at a temperature range of 1...

A process for producing a functionalized graphene used for protecting the metals from corrosion comprising preparing graphite oxide by oxidative treatment pure graphite, subjecting the graphite oxide to the step of exfoliation, reducing exfoliated graphite oxide by using hydrazine hydrate to produce grapheme was...

The invention relates to a low-carbon bainitic steel grade with high yield strength and high yield ratio for application in seismic-proof buildings. The chemical composition of the starting material in wt% is c ≤ 0.05, Mn ≤ 3, S ≤ 0.02, P ≤ 0.02, Si ≤ 0.02, Al ≤ 0.01, Mo ≤ 0.06, Ti ≤ 0.01, Nb ≤ 0.01, and B ≤ 0.006, ...

The invention relates to a method to recover metallics from the ferrochrome furnace slag, comprising the steps of : grinding the ferrochrome furnace slag of>25mm into <25mm size particles; screening the ground slag into 0-1, 1-3, 3-6, 6-10, and 10-25 mm size particles; separating the ground and screened particul...

Slag entrapment in the mold is one of the major causes of macro nonmetallic inclusions in steel which arises from the disturbances at the melt free surface (meniscus) in the mold. Again appropriate surface flow velocity in mold is required during the casting process because the mold level should keep stable and t...

The present invention relates to a method of predicting the clogging index. The clogging index is an indicator of the degree of deposition of non-metallic inclusions inside submerged entry nozzle (SEN) tube, during continuous casting of steel. This invention includes online capturing of stopper position, tundish we...

A method for making an interstitial-free steel comprising steps of casting a steel using composition as Carbon (C) = 0.001-0.003, Manganese (Mn) = 1.5-2.5, Sulphur (S) = 0.003-0.012, Phosphorus (P) = 0.07-0.12, Silicon (Si) = 0.05-0.4, Aluminum (Al) = 0.03-0.1, Nitrogen (N) = 0.005-0.009, Titanium (Ti) = 0.01-0.05, ...

The invention relates a cooling system for post-heat treatment cooling of cold-worked steels to produce dual phase steels, comprising of: at least two spraying nozzles adaptable to one of air and helium gas, placed perpendicular to the sample; at least two water reservoirs; each reservoir accommodating one spraying ...

The present invention relates to a method to induce instability and increase in localized heat transfer rate by convection of nanoparticle suspension. The method comprises of providing a scheduled volume of water/fluid in a heating chamber (1), providing a nanofluid suspensions of aluminium oxide and water/fluid ...

The invention relates to compact and portable camera system to view in real time the burden profile, gas profile and hot spot generation inside a blast furnace, the system comprising a plurality of flanges to install an image capture unit of the system, the unit being exposed to the hazardous operating conditions...

A steel transfer car gear boxes parting line bolts fixing arrangement consisting of a plurality of bolts passing through the holes made on the base of the gear boxes for parting line joining when a plurality of nuts engage the bolts coming out of the through holes fixing the bolt tightly.

The invention relates to a process for manufacturing a hot-rolled high strength steel comprising steps of casting a steel slab of following composition Carbon (C) < 0.10, Manganese (Mn): < 2.5, Sulphur (S) < 0.010, Phosphorus (P) < 0.025, Silicon (Si) < 0.60, Aluminum (Al) < 0.10, Nitrogen (N) < 0.009, Vanadium (V) ...

The invention relates to an infrared thermography (IR)- based non-invasive method for fast compositional analysis of iron ores with one constituents exhibiting variation in thermal absorptivity, the process comprising the steps of providing an Infrared Thermography camera (1) to capture thermal images of the hea...

The invention relates to an improved JIG adaptable to a tensile testing machine for conducting tensile test of a plurality sized welded rebars, comprising: a base block (1) having a threaded through hole (6), an upper face, and two side faces; a holder (3) comprising a first end and a second end, the first end ha...

The invention relate to an improved automated mineralogy system operating under QEM*SEM technology to identify and analysis sinter phases of calcium ferrite, iron oxide, Al oxide, Al-Fe silicate, Al-Fe oxide, Fe-Mg oxide, Fe-Mg silicate, Ca-Mg silicate, and Ca-Mg-Fe silicate the system comprising a scanning elec...

The present invention relates to a process to control the blast furnace burden distribution to improve performance of the furnace, characterized by comprising the step of defining a shape of a heap of burden in terms of a normal distribution curve - where, y is the height of the heap at r radial location, B is...

The present invention describes a process of hot dip zinc coating in molten Zn-AI bath followed by annealing cycle to get improved powdering performances of galvannead steel sheet. The bath consists of less Al (0.1-0.128wt%) compared to existing practice of higher Al and the developed annealing cycle consist of l...

An improved tundish in a continuous casting system for receiving molten steel at an inlet and discharging the molten metal at the one or more outlet, comprising a magnetic field generating device disposed art the bottom of the tundish, the magnetic field generating in a confined region near the inlet pouring regi...

The invention relates to a method for ultrasonic treatment of coal to increase yield of clean coal in a floatation process, comprising the steps of: mixing coal fines with water to produce coal slurry with desired density in a mixing unit;ultrasonic conditioning of the slurry in an ultrasonic bath having at least on...

The invention relates to a process for determining lubricant composition in a vapor compression refrigeration system to enhance the co-efficient of performance, the system comprising a hermitically sealed compressor, a condenser, a capillary tube including an evaporator cabin for cooling of water, a plurality of...

The invention relates to an disclosed is a process for beneficiating chromite gravity plant tailings. The process is also adaptable to reduce chromite losses from the existing circuit. A sample is first classified using hydrocyclone and floatex density separator followed by concentration using wet shaking table....

A method of selective intergranular fracture to enhnace liberation and thereby beneficiation of low grade banded iron formations wherein quartz or jasper fraction of the iron ore are phase transitioned during heat treatment such as microwave heating or thermal heating followed by quenching. This method enhances the...

The invention relates to a method for automatic identification of coke ovens for auto positioning systems in coke plants of steel industries. For the purpose of automatic identification of the coke ovens, a specially designed plate is placed on the coke ovens which contain slots. These slots represent the binary ...

A water based environment friendly coating for coating a rebar surface. This invention relates to an environment friendly, water based temporary protection coating composition for treating thermo mechanically treated steel rebars. The silicate based coating provides corrosion resistance to TMT rebars up to at l...

The invention relates to a multi-track laser beam process of surface hardening of a full size steel blank of low-carbon steel for producing automotive components with improved strength and fatigue life, the process comprising the steps of: providing a hot rolled low carbon steel blank in the form of flat sheet ha...

This invention relates to an improved process in a stamp charging procedure for producing metallurgical coke with coke strength after reactivity greater than seventy from a coal blend having ash and Volatile substances in the range of 10.2-12.75% and 20.45-24.75% respectively, wherein coal blends are prepared fr...

The invention relates to the continuous casting process that is one of the most important links in the steel making chain as it represents transition in steel processing from liquid to solid state, and due to its inherent technical challenges impacting on stability, productivity & quality. One of these challenges...

The invention relates to a friction stir spot-welding process to produce Lap joints of high strength Mn440 steel sheets adapting a polycrystalline boron nitride (PCBN) tool, comprising the steps of providing at least two metal sheets of base material with desired thickness and with chemical composition (wt%) c= ...

An improved beneficiation process for low grade iron ore fines of size less than 210 micron to produce a concentrate with <3% alumina and <2% silica, comprising the steps of:- pre-concentrating a slurry of iron ore fines of size less than 210 microns in a hydro cyclone; Collecting a concentrate of iron ore fines of ...

The present invention is related to a new compounded carboxylated nitrile rubber (XNBR) formulation for rubber clad squeeze rollers. These rubber clad squeeze are used in alkali cleaning section of cold rolling/continuous galvanizing/polymer coating operation of steel sheet.The developed rubber clad rollers with th...

The present invention relates to a process for treating spent alkali for removal of silica generated during leaching of coal by adapting NaOH which comprises the steps of (i) Preparing a Friedel"s salt in slurry form by mixing 300 ml of 0.25 M sodium aluminate solution (αk=3.2) in equal volume of 0.5 M with calci...

The invention relates to an ultrasonic measuring arrangement (112) for measuring thickness of a stave (100) with a bent cooling channel (104) being aligned and contacted with the bent cooling channel (104) while measuring thickness of the stave (100), the ultrasonic measuring arrangement (112) comprising an ultrason...

A method for optimization of thermo-mechanical process parameters to reduce relaxation loss in high carbon steel product, comprising the steps of: providing a sample of cold drawn high carbon steel (C~ 0.8 %) wire alloyed with mn, si, cr, and v; providing a thermo-mechanical treatment on the sample to obtain a t...

The invention relates to a process for treating spent acid for removal of impurities consisting of silica, alumina and iron bearing compounds generated during leaching method of coal with Hydrochloric acid, the process comprises : implementing an adsorption step adapting activated charcoal in which silicate ions...

The invention relates to a process for producing semiconducting metal oxide nanotube based highly thermal conducting Transformer oil, the process comprising the steps of : Synthesising of MnO2 nanotubes (MTN) by mixing KMnO4,Hcl (37% dilution), and distilled water; transferring the synthesized solution to a teflon-l...

A method for sintering of MnO2 rich manganese ore fines by addition of a composition of siliceous fluxes containing SiO2, MgO, or CaO, and a binder to a sinter mix containing manganese ore fines and solid fuel during the granulation stage to minimize the adverse effect of decrepitation of MnO2 during sintering, prod...

A method for improving the quality of iron ore pellets without adding CaO bearing fluxes comprising the steps of: Grinding the ore fines into a size of 60-80% less than 45 micron; Mixing the ore fines with an effective amount of pyroxenite (magnesium silicate) mineral in the range of 0.5 to 10% with respect to th...

This invention relates to a coated wire product with superior bend values of at least 14 with a torsion value of at least 65 for making fibres of automobiles from a steel grade with composition range 0.6-1.1 %C, 0.5-0.9%Mn, 0,10-0.5, Si, 0.06-0.01N, 0.009-0:25% S and 0.01-0.035 %P, balance Fe (all values in wt %....

The invention relates to a method of producing natural resin based fast drying coatings applicable on metallic substrate such as non-pickled hot rolled carbon steel tubes and galvanized tubes. The method comprises the steps of: i. rendering natural long or small chain hydrocarbon containing fatty ester; ii. renderin...

The invention relates to a fabrication process to produce defect-free inorganic ultra filtration range ceramic membrane cells, comprising the steps of providing a group of dry inorganic raw materials comprising kaolin, Quartz, calcium carbonate, sodium carbonate, boric acid, and sodium calcium carbonate, respect...

Composition of Nb-microalloyed steel with improved surface quality comprising: C: 0.020-0.10 Mn: 1.5 or less Si: 0.50 or less S: 0.020 or less P: 0.025 or less Al: 0.015-0.050 V: 0.2 or less Cr: 0.1 or less Nb: 0.01-0.03 Ti: 0.005-0.025

An invention comprising the step of tertiary treatment of biologically treated coke plant wastewater (BTCPW) to remove colour bodies and toxic pollutants by using insitu generated carbonaceous adsorbent from integrated steel plant, subsequently the spent adsorbent is used for energy generation. The method consists o...

A method for controlling the superheat of liquid steel within a desired limit in a LF route of steelmaking and casting, the process of ladle operation in the LF route comprising:- pre-heading a green ladle in the process of ladle operation; pouring the molten steel from the BOF vessel to the pre-heated vessel inclu...

The invention relates to a novel iron ore agglomerates were developed by the sintering of fine iron ore, fuel, flux and with boron oxide bearing additives for the enhancement of physical (tumbler index, cold compression strength, abrasion index etc.) and the chemical properties (reducibility index and reduction degr...

The invention relates to a process for improvement of percentage reduction in area (% RA) of hot rolled high carbon wire rod without external heat-treatment for instant cold drawing operation of the hot rolled high carbon wire rod, the improvement is characterized by comprising; allowing the hot rolled high carbon...

The present invention is provided with a method for preparing high strength steel with ultra fine grained microstructure comprising the steps of heating the steel material @ 5°-15°C/s to a temperature of 1140°-1170°C; soaking at 1140°-11700C for sufficient time (@ 1 inch thickness per hour); cooling the steel materi...

The invention relates to a coal blend for use in blast furnace, the coal blend comprising: 5-20 weight percentage of one or more organo-refined coals having ash content (dry basis) in the range of 9 -10 weight %, volatile matter (dry basis) in the range of 30-34 weight%, and Crucible Swelling Number (CSN) greate...

The invention relates to a bainite steel consisting of the following elements in weight %: C: 0.25 - 0.55 Si: 0.5 - 1.8 Mn: 0.8 - 3.8 Cr: 0.2 - 2.0 Ti: 0.0 - 0.1 Cu: 0.0 - 1.2 V: 0.0 - 0.5 Nb: 0.0 - 0.06 Al: 0.0 - 2.75 N: < 0.004 P: < 0.025 S: < 0.025 and a method for manufacturing a bainite steel strip that compris...

The invention describes a process for the production of titanium oxide and metallic iron from llmenite is described. This process consists of heating a pelletised mixture of llmenite ore and a carbonaceous reducing agent in an appropriate ratio at a high temperature, around 1650 °C. Iron in the ore is reduced to...

The invention relates to a system for production of titanium oxide from Ilmenite ore which comprises a combustion chamber [1], a main reaction chamber [2], a wind box [3], a cyclone separator [4], a chimney [5] , an air compressor [6], a plurality of control valves with gauges [7] and a gas station [8] with instr...

An improved method of charging wet granular sinter feed mixture onto a sinter machine trolley or pallet cars in preferentially segregated manner such that larger granules are layered at the bottom of the pallet cars and smaller particles at the top of the larger granules that promote significant increase in permeabi...

The process of the current invention makes use of BOF slag produced during BOF steelmaking operations. The process reduces the BOF slag along with fluxes and optionally with iron and manganese ores to BF slag and hot metal in a Blast furnace set-up. The hot metal thus produced is rich in Phosphorous which can be use...

The invention relates to an improved method to separate particles of size below 10 microns from a slime feed of size below 45/30 microns, comprising two steps of treating the feed in hydrocyclone with underflow of 1st stage operation being treated in the 2nd stage. This process produces underflow and overflow; th...

The invention relates to a process for surface hardening of low-carbon steel by using high power diode laser beam adaptable to automotive components, the process comprising the steps of providing a hot rolled low carbon steel blank in the form of flat sheet, and having chemical composition by weight percentage, c...

A cast steel segregation predicting device for determining and controlling cast steel segregation in a steel product while being cast in a slab caster, comprises a plurality of sensors placed at various location in the slab caster to sense values corresponding to parameters of superheat temperature, diffusion coeffi...

The invention relates to a beneficiation process for coking coal fines of size less than 0.5 mm having fixed carbon content of more than 50%, the process comprising; mixing coal and water for a fixed time in the cell of a mechanical flotation machine by rotating the agitator at a fixed speed and adding coal tar or w...

The invention relates to a cyclone for dense medium separation of coarse coal to increase clean coal yield in a coal benefication process, comprising a feed inlet involute, a vortex finder that extends longitudinally towards the spigot of the cyclone along the centre-line of cyclone, an overflow outlet connecting th...

The invention relates to a mechanical descaler in wire rod drawing plant to remove oxide layers on outer surface of hot rolled wire rods, comprising a plurality of pulley assemblies (10,11,12) mounted on a metallic frame (13), wherein the plane of the first and third pulley assemblies (10,12) disposed from the horiz...

This invention relates to a process for production of highly metallised low sulphur directly reduced iron (DRI) in tunnel kiln from waste iron ore slime fines and less reactive carbonaceous material like Jhama coal. The iron ore slime pellets of 12 – 18 mm were made by the conventional method of pelletizing, utilizi...

The invention relates to a process for separating nanoparticles from a stable nanofluid formulation using other metallic nanoparticles under variable process conditions wherein nanoparticles consist of particles of having dimension less than at least 100 nm, wherein the nanofluid formulation comprises a class of flu...

The invention relates to an improved process for production of high-carbon ferromanganese alloy, comprising the steps of preparing a raw material blend consisting of by weight low-silica containing manganese ore 65%, coke 16%, quartz 3%, dolomite 9% and high-Mn0 slag 7%; injecting the raw material blend in a sub...

The present invention is related to developing defect-free weldable dual phase steels in laboratory of strength ~650-800MPa with spot welded nugget diameter, 6Vt in cold-rolled-continuously annealed conditions by judicious selection of alloying elements and base metal microstructural engineering. The method invo...

The invention relates to a compact phased array radar system for accurate measurement of burden profile at blast furnace, comprising :- a circular patch antenna array matrix radiating microware energy; a beam forming circuit for the individual array elements for 2D surface scanning, wherein the beam approaching from...

The invention relates to an apparatus for online measurement of liquid level and melt temperature in a continuous casting tundish under hazardous temperature, the said tundish comprising aopen vessel with refractory walls accommodating molten metal with a maximum fluid level of H.The apparatus comprising a refractor...

The invention is related to an Al-SI-Mg-Mn alloy coated steel sheet having excellent corrosion behaviour compared to galvanized (GI)/galvannealed (GA) steel and superior sacrificial corrosion properties in comparison with commercial aluminized steels. The alloy coating as per the current invention comprises, in weig...

Twin terminal analogue sensors constitute a major portion of industrial automation hardware. Their low price and robustness have made them ubiquitous in industrial process control systems. Older systems often involve feeding unbalanced signals from these sensors directly into digital controllers. However these senso...

The present disclosure relates to a process for producing graphene, wherein the process is simple and economical. In the said process the substrate is contacted with vaporized seedlac to produce graphene on a substrate including but not limited to conductive material and non-conductive material. The disclosure furth...

The method of the present invention relates to a method of manufacturing sinter in the existing iron ore sintering machine. The base mix of sinter is prepared from fines of iron ores, LD slag, reverts from steel plant, fluxes and solid fuel i.e. coke breeze. Trimming addition of fluxes, sinter return fines and coke ...

In steel making process, continuous casting is a very critical section wherein liquid steel is converted into steel slabs. In the vertically oscillating mould, liquid steel heat is extracted by out layered coolant channels. In this process sometimes the liquid steel comes in contact with mould copper plate due to im...

The invention relates to a method for producing ferrochrome, the method comprising steps of: sintering/ briquetting of low silica chromite ore, the silica chromite ore comprising (all in wt.%) Cr2O3: 49.7-57.9, FeO: 12.5-18.1, SiO2: 0.01-4.4, Al2O3: 9.8-11.7, MgO: 10.5-10.7, CaO: 0.04-1.3, rest: unavoidable impuriti...

The present invention relates to a high strength hot rolled steel thick (4.0 mm = thickness = 7.0mm) sheet with a minimum tensile strength of 600 MPa and good formability, for automotive wheel disk manufacturing. The invention further relates to a method of manufacturing the hot rolled steel sheet. The dual phase st...

The invention relates to a process for assessing thickness of thin optically translucent coating on substrate having roughness, the process comprising steps of: step-1 creating a plurality of reference spectrograph between wavelength and reflectance of white light for each coating thickness using Fresnel’s equations...

The invention relates to an improved trough cover for a main trough of Blast furnace to reduce occurrence of slag jam phenomenon and enhance operational life of the trough cover, the improvement is characterized in that the castable holding system comprises a robust ceramic anchor enabled to hold the refractory cast...

The invention relates to an improved pressure reactor assembly for high-temperature chemical leaching of minerals, comprising a shaped metal vessel having at least one inlet for ingress of a coal slurry and an alkali solution, at least one each valve means disposed on each feed line to regulate the ingress of the ...

The invention relates to an improved annealing Simulator device for annealing real sized steel specimen under controlled condition, which comprises a movable muffle Furnace (6) rested on rail tracks of a table top (7) with associated power controls, at least one thermocouple (5) provided on the furnace (6) to monito...

A proposed method is an improved technique through which vitrinite and inertinite are separated by processing the grindedand demineralised coal with density gradient centrifuge (DGC) followed by bio-processing. The coal is first grinded to less than 75 micron size particles. The grinded coal isthen demineralised wit...

A process for making a galvannealed dual phase steel comprising steps of casting a steel of thickness >200-250 mm with composition of Carbon (C) = 0.06-0.12, Manganese (Mn) = 1.2-2.4, Sulphur (S) = 0.003-0.012, Phosphorus (P) = 0.007-0.012, Silicon (Si) = 0.02-0.08, Aluminum (Al) = 0.03-0.1, Nitrogen (N) = 0.002-0.0...

This invention relates to a cold-rolled micro-alloyed high strength steel grade for automotive application , wherein composition of the steel in wt% of the elements is C<0.09, Mn < 2.5, S<0.02, P < 0.06, Al < 0.009, Ti < 0.05, Nb < 0.05, wherein the microstructure of the steel after cold-rolling and batch-anneali...

This invention relates to a process for the production of highly metallaized directly reduced iron (DRI) with low sulphur contents from waste iron ore slime and rejected coal containing more than 50% ash. The iron ore slime pellets of 12 - 20 mm were made by the conventional method of pelletizing, utilizing - 70 ...

The invention relates to an ultrasonic system and a cause-detection of surface crack generaztion during HSS rolling process in an ultrasonic system to avoid roll failure through corrective action in roll cooling phase, the method comprises the steps of providing a system having at least two ultrasonic transducers...

A process for manufacturing High Strength Briquettes from Chrome concentrate, the process comprising steps of forming a mixture of chrome concentrate micro-fines with a liquid phenolic resin binder, solid phenolic resin binder and water, in the ratio of 90-92 : 2.5-3.5 : 0.4-3.5 : 4-5 (all in wt.%), the chrome conce...

The invention relates to a process to convert hematite powder into magnetite for heavy media separation providing known hematite powder which was characterized by a know particle analyzer; providing a micropelletiser; preparing pellets made from a mixture of hematite particles; coke fines and mill scales; drying...

The present disclosure discloses a method for improving yield strength of one or more workpieces. The method includes positioning the one or more workpieces in a punch and die assembly and operating the punch and die assembly such that, a plurality of surface protrusions are formed on the one or more workpieces. The...

A new developed rubber clad comprising 90.00 grams of Carboxylated (7.5%) Nitrile Rubber (XNBR), 10.00 gms of Poly Butadiene Rubber-Grade 1220, 1.00 gm of Anti Crystalline Polyethylene, 2.00 gm of Anti oxidant-Polymerized Tri-hydro Quinoline, 1.00 gm of Poly Ethylene Glycol-Grade 4000, 5.00 gm of Cumarone Indane Res...

A waterborne coating solution comprising: a silane-based resin (10-15 wt. %); an aqueous solution of phosphorous containing polyphenol (3-10 wt.%); an acrylic silicon based leveling agent (0.2-0.3 wt.%); a lower alkyl alcohol based flowing and flexibilizer agent (2.5 wt.%); a metal salt based barium sulphonates f...

The present invention relates to a method of measurement of thickness of copper staves (20) used in a blast furnace by special probe fixture (10) and guiding mechanism (G). The system works by transmitter - receiver method of sound wave technique. A probe fixture (10) is arranged with predetermined length that ca...

A process for the production of highly metallized Directly Reduced Iron (DRI) comprising: subjecting the waste iron ore to the step of grinding; pelletizing the grinded ore to form pellets; removing the moisture content from the pellets to give strength to the pellets ranging between 8 to 15 N; grinding the waste...

The invention relates to a process for production of highly metallised directly reduced iron (DRI) with low sulphur content from waste or rejected iron ore slime and middling coal, comprising the steps of:- (i) grinding and screening waste iron ore fines (slimes) to an optimum size ranging between -70 to -200 mesh...

The invention relates to a process for making a hot rolled high strength steel product, the process comprising steps of casting a steel slab with composition C: 0.06 – 0.1, Mn: 1.15 – 1.25, Si: < 0.1, Cr: 0.25 – 0.35, S: 0.005 max, P: 0.04-0.06, Al: 0.05 max, N: 0.007-0.01, Nb: 0.013 – 0.018, Mo: 0.1 – 0.15, Cu: max...

The present invention is provided with a combined hot metal ladle and slag pot carriage comprises a structural underframe rests on a plurality of rail wheels disposed longitudinally along the length; a room on the upper surface of the underframe to house a slag pot at front side of the carriage; a room on the up...

The present invention relates to a high-strength hot-rolled steel sheet with a minimum tensile strength of 540 MPa and method of manufacturing the same. The high-strength hot-rolled steel sheet of the current invention finds use in automotive applications like wheel rims. The method of manufacturing the hot-rolle...

The invention relates to a process for resistance spot welding of cold-rolled heat-treated (uncoated) transformation induced plasticity (TRIP) aided steel, comprising the steps of :- making liquid steels in a vacuum induction furnace; casting the liquid steel in to ingots; soaking the ingot at 1150°C and forging...

The present disclosure discloses an apparatus for aging a steel-making slag. The apparatus comprising a pressure vessel comprising an inlet for loading the steel-making slag, an outlet for unloading the steel-making slag after aging, and a steam inlet port. An arrangement is provided in apparatus for distributing st...

The invention relates to a process for making a superhydrophobic steel is described comprising steps of dipping a galvanized steel in a first solution mixture for 18 -24 hours at 60-70 °C. for creating a vertically aligned ZnO nanorods microstructure, the first solution being 91:4:5 wt.% mixture of DI water, N-N dim...

The invention related to an improved compounded acrylo nitrile butadiene (NBR) rubber formulation for rubber clad rollers is provided for high speed electrolytic cleaning lines. These clad rolls are used to steer the steel sheet/strip inside the cleaning tank by remaining partly or completely immersed in hot alka...

A process to produce Ductile Iron (DI) pipes with superior machinability and mechanical properties, comprising: producing liquid hot metal in blast furnace using a starting materials containing iron bearing materials in the form of sinter and/or pellet and/or lump ore; transferring the liquid material through a ladl...

This invention relates to organosilicone resin emulsion composition comprising a 5 to 50 gms of methyl hydrogen siloxane, 0.1 to 25 gms of an emulsifier, 0.1 to 25 gms of a surfactant, and 25 to 200 gms of water.

The invention relates to a system for predicting bow or crossbow in flat rolled steel sheets, the system comprising: a reference module, the reference module comprising a master graph between differential residual stress and bow/crossbow developed by testing various samples with different residual stress distributio...

The present invention relates to synthesizing reduced graphene oxide on the surface of a metal sheet and glass. The invention particularly relates to a process for coating a substrate with reduced graphene oxide using seedlac as a carbon source. As per the process of the current invention, a solution of seedlac i...

Present invention is reiated to the development of soil conditioner (amendment) from waste of iron ore slime beneficiation. The invention further relates to the development of a new method in making soil amendments from waste of iron ore beneficiation and thus making iron ore beneficiation a zero waste technology...

The invention relates to a coal blend composition for maximizing utilization of inert carbonaceous matters in a stamp charge coal blend, comprising high fluidity coals in admixture with low ash carbonaceous materials, wherein said high fluidity coals have a range of fluidity from 3000 to 15000 ddpm, and wherein sa...

A process for making a hot rolled dual phase (HRDP) steel, comprising steps of casting a steel with composition 0.06-0.08 of carbon (C), 1.0-1.5 of manganese (Mn), 0.5-0.7 of silicon (Si), 0 - 0.32 chromium (Cr), 0.10 - 0.22 Molybdenum (Mo), maximum 0.005 of sulphur (S), maximum 0.030 of phosphorus (P), maximum 0.00...

The present invention is related to a process for the beneficiation of low grade ferruginous chromite ore to produce the higher chromium-to-iron ratio concentrate. Further, invention also provides a dry alternative beneficiation process for the utilization of such low grade ferruginous fines. The process of the curr...

The invention is related to an Al-Mg-Mn alloy coated steel sheet having excellent corrosion behaviour compared to galvanized (GI)/galvannealed (GA) steel and superior sacrificial corrosion properties in comparison with commercial aluminized steels. The alloy coating as per the current invention comprises, in weig...

The invention relates to a process of producing hot-rolled high strength steel for automotive application with YS ≤ 400 MPa, UTS > 500 MPa, %EI > 40, YS/UTS ≤ 0.8. The steel composition as per the current invention comprises, in terms of weight %, Carbon (C) ≤ 0.07, Manganese(Mn) ≤ 2.5, Sulphur(S) ≤0.012, Phospho...

The invention relates to a multi-track laser beam process of surface hardening of steel sheet with low-carbon and low manganese steel. The resulting steel shows improved mechanical strength and can be used for manufacturing of automotive components. The process comprises the steps of: providing CRCA steel grades ...

The present invention relates to an electrochemical process of making thin film or foil of metal using a low current density technique, comprising the steps of preparing a specimen of a thin foil or a film; providing a twizzer having a conductive end for passing current and enabled to act as an anode; allowing th...

The invention relates to an improved ultrasonic inspection method for the detection of fine surface cracks of high speed steel (HSS) Rolls, said method comprising providing at least one 0.5 MHz surface wave probe; providing a test object in the form of a HSS roll; acquiring receive energy from half the circumfer...

The invention relates to an WPEP"s Waste Polymer Encapsulated Pellets are developed by effectively utilizing the waste polymers and carry over heat of pre-cooked pellets in an induration furnace during pelletizing. Waste polymer encapsulated pellets has shown strong character to reduce industrial dust emission as WP...

Accordingly there is provided a fail-safe device for automatic switching of circuit breakers in a power system to protect the system. The device comprises a timer provided in the circuit between the neutral phase and an on-off switch. A contactor MM-OO having NC-contact (16) is arranged which disallows the timer to ...

This invention relates to a method of detecting AC motor misalignment faults comprising the steps of: data acquisition by sensing single-phase current of a 3-phase motor, high speed digitizing the current signal, anti-aliasing the digitalized current signal near the nyquist frequency; feature extracting by estimatin...

The present invention is provided with a method of coating on sinter product with ultrafine particles adaptable to burden of blast furnace and metallurgical application, comprising of wetting the sinter products either by dipping a plurality of sinter products in water tank or by spraying water on sinter products; r...

In the present method, rolling is not required and grain refinement of the cast sample is obtained by homogenizing of the sample at 1260°C in a heat treatment furnace. Transverse cut billet/slab slices are ground finish (mirror finish) to 18 mm thickness with parallel faces on which backscattered signals from the g...

A process for the production of ferrochrome enriched with nickel comprising: subjecting the chromite nickeliferrous ore to oxidation followed by the step of reduction using coal as reductant and flux at a low temperature of 1400-1500°C; separating the metal and slag phase after quenching into water. ...

This invention relates to a coal flotation process through pre water treatment of recycle water from coal beneficiation thickener and feeling the treated water into flotation cell comprising the steps of passing first the recycle to a unit for oil removal; feeding the said oil removed water to a unit provided wit...

1. A simplified ICP Spectrometric method for estimation of Fe(met) in sponge iron in a sample comprising the step of: - taking 0.1-0.5 gm sample in a clean and dried volumetric flask; - adding 60-70 ml boiled filter water and 1.0-2.0 gm mercuric chloride to the volumetric flask containing the sample to convert met...

This invention relates to a method of recovery of hexavalent chromium from waste of chromium plating and chromating industry comprising the steps of collecting 1000 liter chrome waste of 4000-5000 ppm of chromium on chromium plating, chromating containing hexavalent chromium and placing it in a reaction tank; adding...

Substrate surface preparation: Different steel grades D, EDD & IF steel sheets were taken for the investigation. These sheets were cleaned to remove scales and subjected to tri-cationic phosphate base solution to obtain a thin coating of <0.5 micron (2-3 g/m2) phosphate coating in one case. In another case, a high a...

This invention relates to a high capacity Torpedo Ladle car for transportation of hot metal from blast furnace to LD furnace floor comprising of a torpedo shaped vessel (V) of a upper car and an undercarriage, the upper car consisting of a rotatable and tiltable torpedo shaped vessel (V) with pouring spout (39) and ...

A process for the production of ferrosilicon from Banded Hematite Quartzite comprising the step of: subjecting banded hematite (BHQ), low reactive coal, quartzite and pet coke to the step of crushing; mixing banded hematite quartzite (BHQ), low reactive coal, quartzite and pet coke in the ratio ranging between 1:1:...

The improved ultrasonic device comprises of a melting unit, a buffer rod/sample holder, a cooling unit, and an ultrasonic testing system. The buffer rod/sample holder can be configured as a vertical rod with a port on the top to hold the sample positioned inside a vertical tubular furnace. A sample is kept in a port...

The invention relates to a novel ultrasonic method by 5 MHZ focused beam probe and a multi-axis scan (x, y and z axes) in ultrasonic immersion system through image analysis, evaluating the effect of electro-magnetic stirring on soundness of high carbon as well as low carbon grade continuously cast steel billets....

A method for estimation of fluoride content in caster compounds comprising: preparing solution of zirconyl chloride, sodium 2(-parasulfophenylazo)-, 8- dihydroxy-3,6-naphthalene disulfonate] and sodium arsenite solution, mixing the solution of zirconyl chloride and sodium zirconyl acid and (SPADNS) in 1:1 ratio; ...

The invention relates to a method and apparatus to increase the cooling rate of gas used in a batch annealing furnaces (A) of cold rolling mills under bypass cooling is disclosed. The invention makes use of the higher heat transfer capacities of nano-coolants developed by a higher-shear mixing (8) of nano- parti...

This invention relates to an An apparatus to find out optimized cooling methods for producing compatible strength of coke and methods generated thereof comprising a cylindrical chamber(0)adapted to cool pushed coke with a perforated bottom for draining out water and a gas heating arrangement(3)to heat the chamber a ...

An anti-corrosion sol-gel coating composition for metal surfaces comprising: a first organosilane compound having at least one epoxy group and at least one hydrolysable alkoxy group; a second organosilane compound having no epoxy group and two or more hydrolysable alkoxy group, a corrosion inhibiting compound having...

A grinding pot holding device comprises a circular ring shaped articles jointed by two halves circular segment with a plurality of fastening means. The circular ring shaped device is made of steel material. The circular ring shaped device is mounted on the middle groove part of the sample pot which helps the operato...

This invention relates to device to hold sample pellet of oxide materials for chemical analysis in XRF spectometer and method of forming the device thereof wherein a plastic ring(6) of diameter 5cm was designed which was in between the size of the steel ring (2) used for pallet (1) making and diametetr of the casset...

This invention relates to a method of producing a low phosphorus steel in LD vessels on optimized maintenance of end blow carbon range comprising the steps of charging high phosphorus containing hot metal of in wt% C - 4.3-4.4, Si - 0.4-1, P - 0.100-0.300, Al - 0.021 - 0.06 rest iron into a LD vessel of Mgo lining, ...

A method to improve hydrodynamics and heat transfer of hydraulic jump region in the process of jet impingement cooling, comprising the steps of: dissolving a surfactant additive, which is DuPont™ Zonyl® FSH in a cooling medium and forming an aqueous surfactant solution; providing an impinging jet nozzle module c...

The present invention relates to a process for on-line replacement of a damaged return liquor pipe line in coke oven battery comprising of plugging of the existing return tar liquor passage in the bleeder by a flexible rubber covered metallic plate blank of each gas cleaning main; installing a "T" shaped pipe on ...

The invention relates to Expert system for ore sorting. It is a device or a process for on-line quality control, separation and classification of ores, ore-blends and rocks to improve the quality of ore feed to a plant. It consists of digital camera used to produce digital images of ores etc, and an artificial ne...

An improved method of flux addition in a hot metal refining process to produce liquid steel, the refining process, adapting basic oxygen process (BOF) using at least one refractory lined converter having combined blowing facility and consisting of the steps of charging the converter with hot metal including soli...

The main object of the present invention therefore, is to provide a method and an apparatus for recovering the thermal energy from liquid slags. This and other objects of the present invention are achieved by using a bubbly fluidized bed as the principal heat recovery apparatus. The apparatus comprises a furnace h...

A proces window for production of hot rolled galvanized stseel sheets comprislng:- - cleaning of steel sheets by pickling with acid to remove oxides present at the surface. - an annealing of steel sheets in a furnace by raising temperature @ 20°C /sec from room temp to attain soaking temperature at 750°-800°C and...

A reactive chromate passivation solution for galvanized sheet surface to decorate protecting coating, the chromate passivation solution comprising: - total chromium 3.4-17.0 grm/liter; total nitrate ion 1.3 to 6.7 grm/liter; total fiuorosilicic acid 0.3 to 1.5 grm/liter; and - the pH of chromate soln is 0.7-2.5...

This invention relates to a process for the analysis of Babbitt metals comprising the steps of preparing a solution of hydrochloric acid and dltartaric acid to a sample of the Babbitt metal to form a mixture, followed by heating the mixture for complete dissolution, to form a solution; cooling the solution, addi...

Accordingly, there is provided a condition monitoring system for steel slab caster which adapts multiple sensors for monitoring the friction level, by measuring the friction between the mould and the solidifying slab including monitoring the health of the oscillator for any abnormality in operation. This system adap...

A method of illumination of cold rolled sheets for automatic surface inspection comprises of finding the optimal distance of a plurality of automobile fog lamps from the ground for maximum intensity of light and calculating the cone angle after verifying experimentally the workable region of the light spread. The...

The present invention relates to a method to evaluate torsional properties in high carbon steel by eddy current measurements comprising taking a plurality of samples of high carbon steel wire rods having known torsional no.; testing torsion no. of the samples according to IS specification No:1717:1985 by eddy cu...

The present invention relates to an internally ribbed tube with an inside diameter d, for heat transfer application comprising regularly spaced axial or longitudinal ribs having flat topped trapezoidal cross-section for efficient heat transfer applications in one of a Single phase flow, a two phase flow, a boilin...