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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 the products are air cooled, magnetically separated, screened and size wise in ...
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2017-6-28 · Dolomite is an anhydrous carbonate mineral. It is a double carbonate of calcium and magnesium (CaCO3.MgCO3). It is one of the important raw materials used in production of iron and steel. Dolomite contains theoretically 54.35 % of CaCO3 and 45.65 % of MgCO3 or 30.41 % of CaO, 21.86 % of MgO, and 47.73 % of CO2.
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2014-9-15 · Most of the plants in India use DRI process—a solid state direct reduction process by which iron ore is reduced to sponge without phase change (Figure 1). Raw material mix-iron 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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2011-1-16 · In sponge iron process variation in temperature of iron ore, coal, dolomite, sponge iron, and waste gas is in the range from 1,020°C to 30°C. Though specific heats of these materials vary considerably with change in temperature, in the present work these variations are taken as negligible.
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2015-2-15 · 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.
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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 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 ...
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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. The quality of sponge iron is primarily ascertained by the percentage of ...
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2022-2-3 · 1. Introduction. DRI or Direct Reduced Iron or Sponge Iron process was first commercialized during 1909 in Sweden .This route of production of Steel became popular in India because of lower capital cost of setting up of secondary steel making facility, distributed production to cater to the local market need and non-availability of Coke in India etc.
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2011-1-6 · characteristics of iron ore itself. Generally, the higher iron content of pellets have the higher reducibility and the higher clustering tendency. Remark: Addition of lime (hydrated lime or limestone) and/or dolomite to iron ore results in lower clustering tendency of pellets and higher compression strength of sponge iron. e) Reducibility
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2016-3-30 · This product is known as direct reduced iron (DRI) or sponge iron. ... used in the process. Iron. ore or pellets, reductant (i.e., noncoking coal or natural. gas), and limestone/dolomite are the ...
Read More2011-1-16 · In sponge iron process variation in temperature of iron ore, coal, dolomite, sponge iron, and waste gas is in the range from 1,020°C to 30°C. Though specific heats of these materials vary considerably with change in temperature, in the present work these variations are taken as negligible.
Read More2015-2-15 · 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.
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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 hematite(Fe2O3). As only oxygen can be removed from the iron
Read More2011-1-6 · characteristics of iron ore itself. Generally, the higher iron content of pellets have the higher reducibility and the higher clustering tendency. Remark: Addition of lime (hydrated lime or limestone) and/or dolomite to iron ore results in lower clustering tendency of pellets and higher compression strength of sponge iron. e) Reducibility
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2020-3-3 · Iron ore or pellets, reductant (i.e. non-coking coal or natural gas) and limestone/dolomite are the main raw materials for DR technology. For the successful operations, the process of DR technology has specified the characteristics of the
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In Rishabh Sponge all modernised and completely PLC operated, full proof automation system is in place right from receiving of raw materials like Iron Ore, Coal, Dolomite etc. & at every stage of manufacturing process including
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2022-2-8 · 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
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2015-9-1 · 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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2021-4-29 · kiln process.1 In this process approximately 1.5 tons of lump ore -31.53.15mm 800 kg of coal and 40 kg of dolomite are fed to a kiln to produce 1 ton of DRI. At the kiln exit the transfer of material is through a transfer chute closed off from the atmosphere through which the material falls into a rotary cooler. The DRI produced in the .
Read More2011-1-16 · In sponge iron process variation in temperature of iron ore, coal, dolomite, sponge iron, and waste gas is in the range from 1,020°C to 30°C. Though specific heats of these materials vary considerably with change in temperature, in the present work these variations are taken as negligible.
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2020-9-10 · Sponge Iron Manufacturing Process of New Design Sponge Iron Rotary Kiln Energy Comprehensive Utilization System. The iron concentrate, dolomite, and coal from the stockyard enter into three groups of metering pneumatic conveying devices of the feeding system for metering. The measured iron concentrate, dolomite, and 50% of coal all enter the ...
Read More2015-2-15 · 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.
Read More2020-3-3 · Iron ore or pellets, reductant (i.e. non-coking coal or natural gas) and limestone/dolomite are the main raw materials for DR technology. For the successful operations, the process of DR technology has specified the characteristics of the
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The process of sponge iron making aims to remove the oxygen from iron ore. The quality of sponge iron is primarily ascertained by the percentage of metallization (removal of oxygen), which is the ratio of metallic iron to the total iron present in the product. Sponge iron manufacture is highly sensitive to raw material characteristics.
Read More2021-8-10 · process is exothermic in nature. Length 80 m Fig. 1 Schematic of the rotary kiln of sponge iron process Table 1. Reaction Temperature and its heat of reaction [11] III. CFD Model: Boundary & Operating conditions The 2 D geometry of rotary kiln is developed using GAMBIT 2.4.6. The assumptions for the present work are: (1) 2D
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The process of sponge iron making aims to remove the oxygen from iron ore. The quality of sponge iron is primarily ascertained by the percentage of metallization (removal of oxygen), which is the ratio of metallic iron to the total iron present in the product. Sponge iron manufacture is highly sensitive to raw material characteristics.
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In Rishabh Sponge all modernised and completely PLC operated, full proof automation system is in place right from receiving of raw materials like Iron Ore, Coal, Dolomite etc. & at every stage of manufacturing process including material handling conveyor system, material feeding, mixing, screening, separation as well as finished product storage systems and units.
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2012-10-19 · iron and less payback period, sponge iron industry has emerged as a profitable venture. However, due to lack of proper integration techniques, non-optimal process parameters, high energy consumption and old running process technology, the industry are facing a setback in market. Many investigators considered the process of sponge iron
Read More2015-9-1 · 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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الصين -تشنغ تشو -المنطقة الوطنية للتنمية الصناعية للتكنولوجيا المتطورة، جادة العلوم رقم 169.
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