Sponge Iron By Tunnel Process
tunnel kiln process sponge iron XSM is a leading global manufacturer of crushing and milling equipment tunnel kiln process sponge iron Read more sponge iron by tunnel process
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tunnel kiln process sponge iron XSM is a leading global manufacturer of crushing and milling equipment tunnel kiln process sponge iron Read more sponge iron by tunnel process
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Sponge Iron The manufacture of sponge iron entails the deoxidisation of iron ore through the direct reduction Direct reduction is a process by which metallic iron is produced by the reduction of iron ore below the melting temperature of iron The production technology of
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Apr 30 2011· Sponge iron is a form of iron that we can produce directly from iron ore through a reduction process whereas pig iron is a form of iron that we can produce by melting iron ore along with charcoal and limestone under very high pressure
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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
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The gangue material in sponge iron originating from Iron Ore namely silica and alumina and the sulphur and phosphorous contents adversely affect the economics in subsequent steel making operation Porous Laterite etc Chemical Specification Fe Total 65 Si O2 Al2O3 5 Sulphur
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Nov 09 2014· Sponge iron making process 11 ROTARY COOLER The product is conveyed to the product separation and storage building The product is Sponge iron and char Place that spraying a controlled amount of water directly into hot solids and by spraying additional water outside the
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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 020 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
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The actual process of the coal based sponge iron production is based on SLRN 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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Oct 10 2019· 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 blast furnaces and basic oxygen furnaces
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Most of the plants in India use DRI processa solid state direct reduction process by which iron ore is reduced to sponge without phase change Figure 1 Raw material mixiron ore dolomite and coal are fed to one end of rotary Kiln and product sponge iron along with char is taken out from the other end Apart from this primary
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Boudouard reaction dolomite DRI Iron ore metallization non coking coal pellets reduction Rotary kiln Sponge iron Sulphur Coal based Direct Reduction Rotary Kiln Process The coal based direct reduction rotary kiln process was developed for converting iron ore directly into metallic iron without the melting of the materials
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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 Sponge
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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 hematiteFe2O3 As only oxygen can be removed from the iron ore during the process of making sponge iron ironores rich in iron content of 65percent and above is
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Direct reduced iron also called sponge iron is produced from the direct reduction of iron ore 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 solidstate processes which reduce iron oxides to metallic iron at temperatures below the melting point of iron Reduced iron derives its name from these
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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 mixed and heated to degrees centigrade s the mixture is
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Abstract Today India stands as the largest producer of coal based sponge iron through rotary kiln process using calibrated ore and non coking coal However Rotary kiln process suffers from serious limitations like low productivity and pollution In this respect fixed bed Tunnel kiln furnace are evolving as an alternative to Rotary kiln process Iron ore fines and
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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
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Jun 14 2011· Iron is not found independently though as it is found in underground rocks in the form of its oxides that are called iron ores Iron as we know it totally different when one sees it as an ore of iron and it is through specialized iron making process that we get to use iron
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