retort process of sponge iron -
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retort process of sponge iron -

CN1818081A - Production of sponge iron - Google Patents

The invention is about the producing method of the sponge iron. The process is: (1) make the material into the double iron oxide ball; (2) put the double iron oxide ball and the reductant into the reaction tank to get the sponge iron ball mass; (3) put the mass into the thermal insulating flume to separate the reductant, to remove the C, S,O in the protection of the N2 or the H2 to produce the ...

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Effect of Quality of Raw Materials on the Quality of ...

2017-3-4 · Sponge Iron is a term given to the product that is obtained by reduction of iron oxide ore in solid state. Since ... In the mean time this retort process holds the second largest share worldwide of all direct reduction process. At the beginning of the 60’s the

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STUDY OF REDUCTION BEHAVIOUR OF IRON ORE

2014-8-21 · The process of DRI or sponge Iron making can be classified into different categories, which are as follows. a> Rotary Kiln Process. ... In Retort process the reactor vessel is a retort where the charge is fed from top end remains stationary till reduction, thus it works in batches .a mixture of hot gases contains about 89% of reducing gases ...

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A review of Developments in Powder Metallurgy

2017-1-30 · A. Sponge iron process: In the process, selected magnetite (Fe3O4) ore is mixed with coke and lime and placed in a silicon carbide retort. The filled retort is then passed through a long kiln, where the reduction process leaves an iron “cake” and a slag. In subsequent steps, the retort is emptied; the reduced iron sponge is separated

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ENGINEERING NATIONAL INSTITUTE OF TECHNOLOGY,

2009-5-10 · The process of DRI or sponge Iron making can be classified into different categories, which are as follows. 1.4.1 Rotary Kiln Processes Rotary Kiln Processes are very useful for Sponge Iron Production using non-coking coal as reductant. The Iron Ore in

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(PDF) i) Direct Reduced Iron: Production

2016-3-30 · This product is known as direct reduced iron (DRI) or sponge iron. Processes that produce iron by reduction of iron ore (in solid state) below the melting point are generally classified as DR ...

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Melting behaviour of sponge iron in

2010-9-6 · (1) The experience of melting sponge iron in induction furnaces infers that the best usage and melting of the sponge iron can be achieved if the particle size of the sponge iron is in close range and its metallization is + 90%. The density of its particle should be as high as possible. (2) Even acidic slag facilitiates the melting of sponge iron.

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Hydrogen production by steam–iron process - ScienceDirect

2000-3-1 · The steam–iron process is one of the oldest methods of producing hydrogen. It is a cyclic process for water cleavage, whereby coal is consumed. Coal is gassified to a lean reducing gas, containing carbon monoxide and hydrogen. This gas reacts with iron oxides (haematite Fe2 O 3, magnetite Fe3 O 4, wuestite FeO) to produce a reduced form of ...

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Iron & Steel Making - Askmemetallurgy

2021-10-6 · In steel making higher FeO makes the slag. 19. Permeability of the charge in the bosh region of the blast furnace is maintained by. 20. In the blast furnace Solution loss reaction is also known as. 21. The reductant used for industrial production of sponge iron are. 22. M40 index of coke indicates.

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Effect of Quality of Raw Materials on the Quality of ...

2017-3-4 · Sponge Iron is a term given to the product that is obtained by reduction of iron oxide ore in solid state. Since ... In the mean time this retort process holds the second largest share worldwide of all direct reduction process. At the beginning of the 60’s the

Read More
Powder Production Technologies - Powder Metallurgy

The sponge iron process. The longest established of these processes is the sponge iron process, the leading example of a family of processes involving solid state reduction of an oxide. In the process, selected magnetite (Fe3O4) ore is mixed with coke and lime

Read More
STUDY OF REDUCTION BEHAVIOUR OF IRON ORE

2014-8-21 · The process of DRI or sponge Iron making can be classified into different categories, which are as follows. a> Rotary Kiln Process. ... In Retort process the reactor vessel is a retort where the charge is fed from top end remains stationary till reduction, thus it works in batches .a mixture of hot gases contains about 89% of reducing gases ...

Read More
PRODUCTION OF LIQUID IRON USING COAL

2012-6-28 · LIQUID IRON PRODUCTION BY VRDR-SAF PROCESS(8). NMLillas developed a process of production of low S & P iron by using Vertical Direct Reduction and Submerged Arc Furnace Process (VRDR-SAF). VRDR-SAF Process is a combination of Vertical Retort Direct Reduction. Process - Sub-merged Arc Furnace Process as given in Fig.5.

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(PDF) i) Direct Reduced Iron: Production

2016-3-30 · This product is known as direct reduced iron (DRI) or sponge iron. Processes that produce iron by reduction of iron ore (in solid state) below the melting point are generally classified as DR ...

Read More
Furnace structure - Clauss, Julius A.

In the production of sponge iron from carbonaceous material and iron ore heated in a closed retort, there is formed an excess of active gases which must be continuously removed from the retort, maintaining a constant pressure in the retort either positive or negative at which pressure the re-action between the carbon and ore is most rapid.

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Direct reduction : a review of commercial processes

SPONGE IRON PRODUCTION CAPACITY BY PROCESS TYPES (1978) Gas Reductant (80.2%) Shaft Furnaces (38.7%) Midrex (27.4%) Purofer (7.6%) Armco (3.1%) Wiberg (0.6%) Retort Furnaces (26.7%) HyL (26.7%) Fluidized Bed Furnaces (10.7%) HIB (7.0%) FIOR (3.7%) Others (4.1%) Solid Reductant (19.8%) Rotary Kiln (16.0%) SL/RN (7.9%) Japanese (6.7%) Krupp (1.4% ...

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Hydrogen production by steam–iron process - ScienceDirect

2000-3-1 · The steam–iron process is one of the oldest methods of producing hydrogen. It is a cyclic process for water cleavage, whereby coal is consumed. Coal is gassified to a lean reducing gas, containing carbon monoxide and hydrogen. This gas reacts with iron oxides (haematite Fe2 O 3, magnetite Fe3 O 4, wuestite FeO) to produce a reduced form of ...

Read More
Blast Furnace Process - an overview | ScienceDirect Topics

2010-1-1 · The horizontal retort process was the dominant one for a very long time. It is now mostly replaced by the vertical continuous retort process (Rosenqvist, 1974). In the horizontal retort process the retorts are first charged with a loose mixture of ZnO and an excess of coke breeze and then heated to a maximum temperature of 1400°C (2552°F) to ...

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Tunnel Kiln Sponge Iron New Technology

Tunnel kiln process for sponge iron making youtube 13 may 2015 here all gulin machines are designed produced assembled and texted according to the iso90012008 get price and support online tunnel kiln sponge iron new technology tunnel kiln sponge iron new technology in the tunnel kiln process contemplated by 1 my invention for the.

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ALTERNATIVE ROUTES OF IRON MAKING

2020-10-25 · The key input material required for sponge iron production is the iron ore. Since sponge iron is a solid reduction process, the gangue in the ore is retained in the product. Due to oxygen removal there is a reduction in weight by about 30%, percentage of gangue material goes up by 1.4 times. Hence it

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Melting behaviour of sponge iron in

2010-9-6 · (1) The experience of melting sponge iron in induction furnaces infers that the best usage and melting of the sponge iron can be achieved if the particle size of the sponge iron is in close range and its metallization is + 90%. The density of its particle should be as high as possible. (2) Even acidic slag facilitiates the melting of sponge iron.

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SPONGE IRON INDUSTRY - BankRuna

2012-10-8 · From a meager production of 1.31 million tonnes of sponge iron in 1991-92 the present production level of sponge iron level jumped to 7.67 million tones in 2002-03 and 10 million tones in 2004-05 and India emerged as the largest producer of Coal based sponge iron in the world since 2001.

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PRODUCTION OF LIQUID IRON USING COAL

2012-6-28 · LIQUID IRON PRODUCTION BY VRDR-SAF PROCESS(8). NMLillas developed a process of production of low S & P iron by using Vertical Direct Reduction and Submerged Arc Furnace Process (VRDR-SAF). VRDR-SAF Process is a combination of Vertical Retort Direct Reduction. Process - Sub-merged Arc Furnace Process as given in Fig.5.

Read More
Furnace structure - Clauss, Julius A.

In the production of sponge iron from carbonaceous material and iron ore heated in a closed retort, there is formed an excess of active gases which must be continuously removed from the retort, maintaining a constant pressure in the retort either positive or negative at which pressure the re-action between the carbon and ore is most rapid.

Read More
Direct reduction : a review of commercial processes

SPONGE IRON PRODUCTION CAPACITY BY PROCESS TYPES (1978) Gas Reductant (80.2%) Shaft Furnaces (38.7%) Midrex (27.4%) Purofer (7.6%) Armco (3.1%) Wiberg (0.6%) Retort Furnaces (26.7%) HyL (26.7%) Fluidized Bed Furnaces (10.7%) HIB (7.0%) FIOR (3.7%) Others (4.1%) Solid Reductant (19.8%) Rotary Kiln (16.0%) SL/RN (7.9%) Japanese (6.7%) Krupp (1.4% ...

Read More
Tunnel Kiln Sponge Iron New Technology

Tunnel kiln process for sponge iron making youtube 13 may 2015 here all gulin machines are designed produced assembled and texted according to the iso90012008 get price and support online tunnel kiln sponge iron new technology tunnel kiln sponge iron new technology in the tunnel kiln process contemplated by 1 my invention for the.

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MIDREX® — THE LEADING DRI PRODUCTION PROCESS |

MIDREX is an innovative ironmaking process that has been specifically developed to produce direct-reduced iron from iron ores and natural gas/hydrogen. MIDREX is a gas-based shaft furnace process that converts iron oxides - in the form of pellets or lump

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Department of Metallurgical Engineering - OSME

2020-4-30 · 12. which one of the following process has the objective of Selective dissolution of metal. Cementation Leaching Converting Roasting 13. The product of Cupola furnace is Pig iron Cast iron Wrought iron Sponge iron 14. Smithsonite is the ore of Tin Silver Zinc Magnesium 15. Which one of the metal can be reduced by hydrogen Magnesium Lead Aluminium

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Iron & Steel Making - Askmemetallurgy

2021-10-5 · Iron & Steel Making. askmemetallurgy provides you lots of fully solved Metallurgical Engineering (Iron & Steel Making) questions and answers with Explanation. All students, freshers can attemp or download Metallurgical Engineering Physical

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