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Dec 24, 2018· Direct reduced iron (DRI), also called sponge iron,[1] is produced from the direct reductionof iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon ...
The basic raw materials for the production of sponge iron are iron ore, non coking coal and dolomite. Iron Ore: Iron ore is the source of iron and available in oxide form namely hematite(Fe2O3). As only oxygen can be removed from the iron ore during the process of making sponge iron iron,ores rich in iron content of 65percent and above is ...
Oct 10, 2019· 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. This type of iron can be produced in several different types of furnaces, including coke or charcoal ovens, .
The directly reduced iron (DRI) follow different methods of iron making operating below fusion temperature of iron ore to get iron (sponge iron) in solid state using noncoking coal or natural gas as reductant. This iron-making route has become popular at places who do not have coking coal.
Dec 14, 2013· Direct reduced iron (DRI) is also known as sponge iron. It is produced by the reduction of iron ore (in the form of lumps or pellets) by either non-coking coal or a reducing gas produced by reforming of natural gas. The reducing gas can also be produced by the gasification of coal.
Sizing of the Raw materials also play vital role in sponge iron manufacturing process. The required size of Iron ore, MPS (Mean particle size), its physical properties like T.I., A.I. & chemical properties like Fe (T), LOI, gangue content In Sponge Iron Process, two types of coal are being used such as feed coal and injection coal.
Jan 17, 2017· we are trying to take a look at the sponge iron industrie, how we making sponge iron by coal based .if you like please subscribe and comment,please comment your opinion .
Aug 30, 2013· IRON ORE & MGM IRON ORE Iron ores are rocks & minerals from which metallic iron can be extracted. types of iron ore. a) oxide ores ... COAL INJECTION IN ROTARY KILN K.Ramu, C.Ramesh, A.Rajasekaran During the process of manufacture of sponge iron, coal injection plays a v... IRON ORE & MGM IRON ORE .
Nov 09, 2014· Making process iron ore to sponge iron. ... Sponge iron making process 1. ... INJECTION COAL Coal Crushing Combustion Injection to kiln Coal Injection over a large range of size 0-20 mm Temperature combustion below 950 C Coal injection system makes use of voal volatiles for reduction, thereby reducing the coal requirement to a minimum Coal ...
In a direct reduction iron (DRI) process, will 140 ton of iron ore give 140 ton of sponge iron? Assume 14 tonnes of coal, 7 tonnes of lime/chalk and 7 tonnes of bentonite are added to the 140 iron ore mix...
Sponge iron is a highly processed form of iron ore which contains metallic iron in the range of 83-88% obtained by direct reduction without melting it. Due to high porosity, the resulting iron is called sponge iron. It is used as a raw material for manufacturing steel .
make sponge iron from coal and iron ore process. How to use magnetite iron ore to make sponge iron in coal the idea of the process of how to make sponge iron from iron ore is basically to add coal to remove oxygen from iron by adding non coking coal and to remove sulfur by adding lime stone, the iron ore and coal are crushed in crushers and screened to the recommended sizes (5mm mm), then ...
Direct Reduced Iron Technology and Status of Industrial Application Wolfgang R. Schütze ... of industrial plants for the hot briquetting of direct reduced iron went into operation. Ad- ... Pellets and lump ore (gas based reduction) Pelletized fine ore (coal based reduction) Figure 9: Cross sections through briquettes made with material from ...
Mar 16, 2013· Fig 1 DRI process principle. Major DRI production processes are either gas based or coal based. Feed material in a DRI process is either iron ore sized to 10 to 30mm or iron ore pellets produced in an iron ore pellet plant. In the gas based plant the reactor, the reduction reaction takes place is a shaft furnace.
Direct reduced iron - WikipediaProducing sponge iron and then working it was the earliest method used to obtain iron in the Middle East, Egypt, and Europe, wher ... Home > Product >sponge iron plant process china. sponge iron plant process china. MTW Series Heavy Type European Grinding. ... 10mm to 275mm Production capacity : Up to 650TPH ...
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 .
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 ...
How to use magnetite iron ore to make sponge iron in coal, the idea of the process of how to make sponge iron from iron ore is basically to add coal to remove oxygen from iron by adding non coking coal and to remove sulfur by adding lime stone, the iron ore and coal are crushed in crushers and screened to the recommended sizes (5mm- mm ...
The direct reduction process uses palletized iron or natural 'lump' ore. Process. Sponge iron making is a process in which iron ore lumps (typically 5mm-18mm size) are tumbled with a 'select' grade of iron-coking coal little dolomite inside an inclined rotary kiln and control combusted in the presence of air for about 12 hours before ...
Grain Size of Sponge Iron: Induction furnaces users always prefer to use fines of sponge iron (Coal Based sponge iron in sizes from 2mm to 5mm) than lumps as fines give better yield and hence less power consumption. So good sponge iron manufactures always try to use iron ore in the size of 5mm to 12 mm, which gives better quality sponge iron.
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.
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 .
Gulin machine in iron ore processing plant, sponge iron by tunnel process. Gulin provide the sponge iron by tunnel process solution case for you. Read more. Tunnel Kiln For Sponge Iron - Minerals process ... tunnel kiln process sponge iron « coal russian. Kiln For Sponge Iron – Alibaba. 756 Products . Rotary Kiln For Sponge Iron, You ...
Coal Based Rotary Kiln for Direct Reduced Iron / Sponge Iron (100 TPD, 350 TPD, 500 TPD) Solid state reduction of Iron Ore using either coal/gas as a medium of reduction to produce a substitute raw material for steel making is termed as Direct Reduced Iron (DRI).
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