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dolomite in sponge iron process

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Sponge Iron Production Process Arij Trading

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 3) C Grade Sponge IronSponge iron having total Fe is less than 80% and metallization less than 84% then sponge iron is called C grade sponge iron.Properties of sponge iron Physical PropertiesThere are several parameters to be monitored for improving the quality of sponge iron for steel making operation, these are listed below-(a) Size -A ...

PROCESS FOR PRODUCTION OF SPONGE IRON

Sponge iron production process discussed herein are selected from known methods of which the references are available and referable. We look at the 4 different methods of producing sponge iron Midrex process. HYL process (4th generation) or Energiron. SL / RN process. Tunnel furnace process. out. The role of kiln is to convert the raw material (iron ore, coal and dolomite) into the sponge iron 8. Detail reaction mechanism of the process is discussed below There are two reduction reactions. First reaction converts iron ore to iron oxide which further reacts with CO to produce metallic iron (Fe) which is called sponge iron.

Sponge Iron Dolomite

is seen that the growth of sponge iron industry in last few years is unremarkable and today India is the largest producer of sponge iron as it covers 16% of global output. According to Sponge Iron Manufacturers Association 1, India has produced around 23 million tonnes of sponge iron in the nancial year of 20092010. Sponge 2020-1-30ensp0183enspRotary kiln for sponge iron 1. rotary kiln Applications A rotary kiln is ideal for calcining high-grade cement in cement plants. It is also commonly used in the production process of catalytic agent, molecular sieve and zinc oxide, etc. Complete Process Of Sponge Iron Kilns. ppt for rotary kiln process of making sponge iron ...

sponge iron rotary kiln process cement

Jun 28, 2017 The basic processes in the production of dolomite are (i) quarrying of raw dolomite, (ii) preparing mined dolomite for its use by crushing and sizing, (iii) calcining of raw dolomite, (iv) processing the calcined dolomite further by hydrating to produce hydrated dolomite if required for use, (v) sintering of dolomite for its use as refractory material, and (vi) miscellaneous transfer, storage, Malcolm Tatum Sponge iron is created from iron ore. Sometimes known as direct-reduced iron, sponge iron is a product that is produced using iron ore.The iron ore is often in the form of pellets or lumps, and is subjected to a reduction process that is created by the use of a reducing gas that emits from coal or a natural gas source.

Difference Between Sponge Iron and Pig Iron Compare

Apr 20, 2015 In the sponge iron process concentrated and finely divided iron ore is reduced in solid phase into sponge iron at high. ... which is composed of iron ore, coal and dolomite. Computational fluid dynamics analysis of sponge iron rotary kilnhighlights 2d cfd model is developed for simulation of rotary kiln of sponge iron processbed material consists of iron ore, coal and dolomite, enters the kiln through feed endue to slow rotation of the kiln bed material moves towards discharge end. Chat Online Dolomite Tunnel Kiln

advantages of limestone in sponge iron process

Direct reduction iron or sponge iron is an old method for producing hydrogen (Milne et al., 2006 Pea et al., 2010 Biljetina and Tarman, 1981) that was replaced by more efficient and economic processes.Recently, the interest in sponge iron as a hydrogen production process has grown again, although the technology still has some major technical and economic challenges to overcome (Milne Jan 16, 2011 In sponge iron process variation in temperature of iron ore, coal, dolomite, sponge iron, and waste gas is in the range from 1,020C to 30C. Though specific heats of these materials vary considerably with change in temperature, in the present work these variations are taken as negligible.

Dolomite Its Processing and Application in Iron and

Computational fluid dynamics analysis of sponge iron rotary kilnhighlights 2d cfd model is developed for simulation of rotary kiln of sponge iron processbed material consists of iron ore, coal and dolomite, enters the kiln through feed endue to slow rotation of the kiln bed material moves towards discharge end. Various processes for producing sponge iron are known. In these processes, iron ore or iron ore concentrates are charged in the form of lumps, fine particles or pellets in a mixture with a solid or fixed carbonaceous reducing agent, such as anthracite or coke, and if desired a sulfur-combining admixture such as lime or dolomite, to a rotary kiln, in which the charge is treated with hot gases ...

Sponge iron making process SlideShare

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. In addition to blast furnace (BF) process in iron and steel production Corex, Romelt, Midrex, Hyl-3 processes are used currently. Pig iron or sponge iron with scrap iron addition are loaded into electric arc furnaces (EAF) for steelmaking 1-4. There is a problem of comparative assessment of carbon dioxide through emission (carbon

tunnle kiln process of sponge iron

Dec 02, 2009 Corex Process in Iron Making. ... Sponge iron making process Albertus Septyantoko. Steel making Sirish Satyavolu ... 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. Some amount of coke is also added to the shaft to avoid clustering ... Conducting complete energy audit (both process and utility) of a sponge iron unit is challenging as there is no laid down procedure to audit the process side. Further, the average heat to power ratio (kW th /kW e ) of sponge iron plants ranges from (251) to (311). This shows that the manufacturing process mostly uses thermal energy and application of electrical energy is insignificant.