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advantages of limestone in sponge iron process:

advantages of limestone in sponge iron process

advantages of limestone in sponge iron process. Advantages Of Limestone In Sponge Iron Process Applications of electrostatics how does a electrostatic precipitator use static electrostatic precipitators use electric forces to is limestone used in the production of sponge iron tunnel kiln for sponge iron production is there an advantage in producing sponge iron over sponge iron

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SPONGE IRON PLANT

The major Raw Materials required for production of Sponge Iron by the rotary kiln process are: sized graded Iron Ore and Non-Coking coal. Limestone, in small quantities, is also required to scavenge the sulphur. IRON ORE The quality requirement of Sized ore for sponge iron

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Convert your sponge iron plant into a cast iron plant and ...

In the process, iron ore fines limestone are pre-heated by the off-gases of the smelting chamber in a rotary kiln, to temperatures of 900-1,000°C then hot-charged into the MAGMA chamber. Coal is directly burnt in oxygen inside MAGMA. ... Advantages of converting a sponge iron plant into a pig iron

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OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION IN

1. Krupp Sponge Iron Process The Krupp. Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (Fig. 1). The feed is introduced together with reducing and de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge ...

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F ocus - YesJersey

Process Description: Sponge iron is produced using non-coking coal by the process of ... The input raw material such as iron ore, non-coking coal (with high reactivity) and the fluxing materials like limestone and dolomite in the calibrated sizes are fed into the Rotary ... Advantages of sponge iron Over scarp: Sponge Iron is a better substitute of

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sponge iron process

Jul 29, 2010  The sulphur content in sponge iron is controlled by adding 1-6mm of limestone/dolomite along with feed materials which picks up sulphur from the coal preventing the sulphur pick up in sponge iron. the sulphur content in sponge iron can be controlled in the range 0.012 to 0,025%

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Sponge Iron - an overview ScienceDirect Topics

DRI, also known as sponge iron, is the product of reducing iron oxide in the form of iron ore and steel plant wastes into metallic iron, below the melting point of iron and typically in the range of 800–1200 °C. Iron oxide is charged into shaft furnace, rotary kiln, or fluidized beds in the form of pellet, iron ore lumps, or fines. The reduction takes place using gaseous reductants (CO + H ...

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Direct reduced iron - Wikipedia

Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon produced from natural gas or coal.Many ores are suitable for direct reduction. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the melting ...

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Difference Between Sponge Iron and Pig Iron Compare the ...

Apr 30, 2011  The key difference between sponge iron and pig iron is that we can produce sponge iron by direct reduction of iron ore through reducing agents whereas the production of pig iron is by melting iron ore with charcoal and limestone at very high pressures.. Sponge iron and pig iron are different forms of iron that we can produce from iron ores that occurs naturally under the surface of

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(PDF) i) Direct Reduced Iron: Production

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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Convert your sponge iron plant into a cast iron plant and ...

In the process, iron ore fines limestone are pre-heated by the off-gases of the smelting chamber in a rotary kiln, to temperatures of 900-1,000°C then hot-charged into the MAGMA chamber. Coal is directly burnt in oxygen inside MAGMA. ... Advantages of converting a sponge iron plant into a pig iron

Read More
OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION

1. Krupp Sponge Iron Process The Krupp. Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (Fig. 1). The feed is introduced together with reducing and de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge ...

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F ocus - YesJersey

Process Description: Sponge iron is produced using non-coking coal by the process of ... The input raw material such as iron ore, non-coking coal (with high reactivity) and the fluxing materials like limestone and dolomite in the calibrated sizes are fed into the Rotary ... Advantages of sponge iron Over scarp: Sponge Iron is a better substitute of

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sponge iron process

Jul 29, 2010  The sulphur content in sponge iron is controlled by adding 1-6mm of limestone/dolomite along with feed materials which picks up sulphur from the coal preventing the sulphur pick up in sponge iron. the sulphur content in sponge iron can be controlled in the range 0.012 to 0,025%

Read More
Direct reduced iron - Wikipedia

Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon produced from natural gas or coal.Many ores are suitable for direct reduction. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures below the melting ...

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Corex Process for Production of Iron – IspatGuru

Calcination of the uncalcined limestone and dolomite. Reduction of the residual iron oxide in the sponge iron. Direct reduction of FeO in the DRI takes place by carbon in the char bed. ... Advantages and limitations of Corex process. Advantages of the Corex process include (i) reduction in the specific investment cost compared with conventional ...

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Corex Process in Iron Making - SlideShare

Corex Process in Iron Making. ... Iron ore, pellets and additives (limestone and dolomite) are continuously charged into the reduction shaft via lock hopper system located on the top of the shaft. ... is reduced by gases emanating from the second unit to make hot sponge iron (first stage). This is mechanically transferred to the second unit or ...

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(PDF) "Sponge Iron Industry in Chhattisgarh : A Perspective

Sponge Iron Industry in recent years has witnessed growth in India as well as globally. Chhattisgarh blessed with abundant natural resources is one of major producers of Sponge Iron in India.

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Energy survey of the coal based sponge iron industry ...

Sep 01, 2015  The actual process of the coal based sponge iron production is based on SL/RN process (jointly developed by the Steel Company of Canada, Lurgi Chemie, Republic Steel Company and National Lead Corporation in 1964), which works on direct reduction of ore.This process is adopted by worldwide conventional sponge iron industries.

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Direct-reduced iron

All effective methods of direct reduction actually use the same process: rich iron ore (fine concentrate or pellets) is reduced by a special gas mixture up to the iron content of 85-90%. This explains why the production of direct-reduced iron is mainly concentrated in countries with large reserves of oil (oilwell gas), natural gas and iron ore ...

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Finex Process for Liquid Iron Production – IspatGuru

Fig 4 Flow of gas in the FINEX process. Typical specific consumption values for the materials and the utilities in the FINEX process are (i) dry fuel around 720 kg/tHM, (ii) iron ore around 1,600 kg/tHM, (iii) additives (limestone and dolomite) around 285 kg/tHM, (iv) O2 around 460 N cum, (v) N2 around 270 N cum, (vi) power around 190 kWh/tHM, and (vii) refractories around 1.5 kg/tHM.

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A Critical Analysis Of Iron And Steel Sector Of India

Dec 27, 2019  Sponge iron Vs. Pig iron. Sponge iron is a form of iron that is directly produced by reduction of iron ore (with the help of reducing agents). Therefore, it is also known as direct reduced iron (DRI). On the other hand, pig iron is a form of iron that is produced along with charcoal and limestone under high pressure.

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(PDF) COREX PROCESS in IRONMAKING Elvis Marca Catachura ...

The COREX process offers high smelting intensity and hence higher productivity, ability to use various types of non-coking coals, use of iron ore fines to an extent, low net operating cost, possible generation of power or other alternative use of export gas generated from

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Steel mill - Wikipedia

History. Since the invention of the Bessemer process, steel mills have replaced ironworks, based on puddling or fining methods. New ways to produce steel appeared later: from scrap melted in an electric arc furnace and, more recently, from direct reduced iron processes.. In the late 19th and early 20th centuries the world's largest steel mill was the Barrow Hematite Steel Company steelworks ...

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sponge iron process

Jul 29, 2010  The sulphur content in sponge iron is controlled by adding 1-6mm of limestone/dolomite along with feed materials which picks up sulphur from the coal preventing the sulphur pick up in sponge iron. the sulphur content in sponge iron can be controlled in the range 0.012 to 0,025%

Read More
F ocus - YesJersey

Process Description: Sponge iron is produced using non-coking coal by the process of ... The input raw material such as iron ore, non-coking coal (with high reactivity) and the fluxing materials like limestone and dolomite in the calibrated sizes are fed into the Rotary ... Advantages of sponge iron Over scarp: Sponge Iron is a better substitute of

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High-pressure briquetting of iron ore fines sponge iron

dolomite, limestone, manganese, chromium, sponge iron etc. ... briquetting can replace pelletisation process at lower costs, with the following advantages- a) Iron ore nes of 0-2 mm size can be briquetted directly. Due to the coarser sizes of iron ore nes,

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Finex Process for Liquid Iron Production – IspatGuru

Fig 4 Flow of gas in the FINEX process. Typical specific consumption values for the materials and the utilities in the FINEX process are (i) dry fuel around 720 kg/tHM, (ii) iron ore around 1,600 kg/tHM, (iii) additives (limestone and dolomite) around 285 kg/tHM, (iv) O2 around 460 N cum, (v) N2 around 270 N cum, (vi) power around 190 kWh/tHM, and (vii) refractories around 1.5 kg/tHM.

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Copper Precipitation Methods

The advantages of this process are: Regeneration of acid. ... Precipitation with sponge iron. Reduction with coke with limestone present to flux and hold the chlorine. Electrolytic reduction. Precipitation with Sponge Iron. Sponge iron, when mixed with cuprous chloride 40 to 50 per cent, solids, gives a rapid and complete precipitation, with ...

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A Critical Analysis Of Iron And Steel Sector Of India

Dec 27, 2019  Sponge iron Vs. Pig iron. Sponge iron is a form of iron that is directly produced by reduction of iron ore (with the help of reducing agents). Therefore, it is also known as direct reduced iron (DRI). On the other hand, pig iron is a form of iron that is produced along with charcoal and limestone under high pressure.

Read More
(PDF) COREX PROCESS in IRONMAKING Elvis Marca Catachura ...

The COREX process offers high smelting intensity and hence higher productivity, ability to use various types of non-coking coals, use of iron ore fines to an extent, low net operating cost, possible generation of power or other alternative use of export gas generated from

Read More
(PDF) "Sponge Iron Industry in Chhattisgarh : A Perspective

Sponge Iron Industry in recent years has witnessed growth in India as well as globally. Chhattisgarh blessed with abundant natural resources is one of major producers of Sponge Iron in India.

Read More
Steel mill - Wikipedia

History. Since the invention of the Bessemer process, steel mills have replaced ironworks, based on puddling or fining methods. New ways to produce steel appeared later: from scrap melted in an electric arc furnace and, more recently, from direct reduced iron processes.. In the late 19th and early 20th centuries the world's largest steel mill was the Barrow Hematite Steel Company steelworks ...

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Creating Iron HowStuffWorks

­The more advanced way to smelt iron is in a blast furnace. A blast furnace is charged with iron ore, charcoal or coke (coke is charcoal made from coal) and limestone (CaCO 3 ­). Huge quantities of air blast in at the bottom of the furnace, and the calcium in the limestone combines with the silicates to form slag.

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Sponge Iron Plant(DRI)-Henan Dajia Mining Machinery Co., Ltd.

Sponge iron is a metallic product produced through direct reduction of iron ore in the solid state. It is a substitute for scrap and is mainly used in making steel through the secondary route. The process of sponge iron making aims to remove the oxygen from iron ore.

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The effect of sponge iron chemical composition on energy ...

The chemical composition of sponge iron has a significant impact on the energy and refractory consumption of EAFs. Quality of sponge iron is determined based on its Metallization and residual oxygen. The higher metallization and the lower FeO cause the higher free iron content in the sponge iron.

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How is Iron Refined from Ore? (with pictures)

Feb 10, 2021  To create an even purer form of iron, known as pig iron, limestone must be added to the mix and the heat increased. This is done contemporarily in the silo-like structure known as a blast furnace. The calcium in limestone bonds with the silicates in the ore, creating a material called slag , which floats on top of the pure liquid iron.

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