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dolomite in sponge iron process

Dolomite – Its Processing and Application in Iron and ...

Application of dolomite in ironmaking and steelmaking processes. During the production of iron by blast furnace (BF) route, dolomite is added either in the process of sintering or as a direct feed in the blast furnace. Raw dolomite is normally used for this addition.

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OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION

2012-1-10  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 iron. Depending

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Welcome to SIPC Services- Pioneer in Sponge Iron ...

2021-1-16  Sponge Iron Background:: DRI Process:: The majority of DRI units in India are coal based. In a coal based DRI unit, non-coking coal and iron ore along with limestone or dolomite in the required size range and quantity are continuously fed into the feed – end of an inclined rotary kiln through a feed pipe.

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Energy Audit Methodology of Sponge Iron Manufacturing ...

2014-7-14  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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Sponge Iron – Prakash Industries Limited

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

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Sponge Iron Production Process - Arij Trading

2 天前  This process is one of the oldest direct reduction methods and the idea of its structure is based on a horizontal cement kiln. In this method, heat coal (as a reducing agent) is mixed with iron ore and sponge iron is produced in a horizontal furnace.

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PROCESS FOR PRODUCTION OF SPONGE IRON -

1972-5-16  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 ...

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Sponge iron making process - SlideShare

2014-11-9  Sponge iron making process 1. ALBERTUS SEPTYANTOKO 2712100014 ... DOLOMITE • MgO = 20 % • CaO = 28 % min • SiO2= 5 % max Chemical Composition • Size = 2-6 mm Physical Composition 5. PRIMARY AIR Primary air is used to

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sponge iron process

2021-1-19  In general sized iron ore of 5-18mm is used in the process of manufacture of sponge iron on all types of rotary kiln with +16mm not exceeding 15-20%.The mean particle size of iron ore shall be restricted to 11mm in order to achieve uniform Fe metallic of all grain size fraction of the product.

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Sponge Iron Dolomite, स्पॉन्ज आयरन के लम्प,

Sponge Iron Dolomite Get Latest Price Dolomite is an important ingredient and acts as a desulphuriser removing sulphur from the feed mix during the reduction process.It is mixed in small proportions along with other raw materials before charging into the kiln.Control of sulphur content is an essential pre-requisite for the manufacture of good ...

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ENERGY INTEGRATION IN SPONGE IRON PLANT USING

2012-5-12  Table 2.1: Raw Materials for Production of Sponge Iron Material Size Iron Ore 5-18 mm Coal 3-20 mm Dolomite 2-6 mm Air - 2.1.3. Theory In any rotary kiln process based on coal, the reduction of iron oxide takes place by the carbon monoxide produced from coal. The following reactions involved are as

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Top PDF Sponge Iron - 1Library

In the process for the production of sponge iron, the raw materials viz., iron ore, coal and dolomite are charged into rotary kiln from the inlet end by means of a feed tube in a pre-determined ratio by electronic weighing equipment. The Rotary kiln is of 3.00 mts.

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Sponge Iron – Prakash Industries Limited

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

More

Simulation of Rotary Kiln Used in Sponge Iron Process ...

2018-11-16  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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2 D Model of Sponge Iron Rotary Kiln Developed Using CFD

2015-5-17  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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Energy survey of the coal based sponge iron industry ...

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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PROCESS FOR PRODUCING SPONGE IRON - FRIED

Reduction gave a sponge iron with a total iron content of 77.2 percent and a zero-valent iron content of 71.9 percent corresponding to a metallizing efficiency of 93.1 percent. The sponge iron fraction below 3 millimeters amounted to 8.3 percent and that below 5 millimeters was 16.1 percent. The process variables were otherwise those in Example I.

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sponge iron process: 2010

2021-1-19  In general sized iron ore of 5-18mm is used in the process of manufacture of sponge iron on all types of rotary kiln with +16mm not exceeding 15-20%.The mean particle size of iron ore shall be restricted to 11mm in order to achieve uniform Fe metallic of all grain size fraction of the product.

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(PDF) Analysis of temperature profile and %

study the kiln of sponge iron process, literature relat ed to it is dis- cussed here: Prasad and Ray [9] simulated flow pattern of air us- ing FLUENT software in rotary kiln of a typical 10 0 tpd ...

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Sponge Iron Dolomite, स्पॉन्ज आयरन के लम्प,

Sponge Iron Dolomite Get Latest Price Dolomite is an important ingredient and acts as a desulphuriser removing sulphur from the feed mix during the reduction process.It is mixed in small proportions along with other raw materials before charging into the kiln.Control of sulphur content is an essential pre-requisite for the manufacture of good ...

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SPONGE IRON - BHAGWATI POWER STEEL LIMITED

2010-9-21  Iron ore (haematite) and non-coking coal are the prime raw materials for the production of sponge iron. These are charged into a rotary kiln in requisite proportion along with some dolomite. Coal plays a dual role in the process by acting as a reductant as well as a fuel for providing heat to maintain the requisite temperature inside the kiln ...

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Simulation of Rotary Kiln Used in Sponge Iron Process ...

2018-11-16  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.

More

sponge iron process: 2010

2021-1-19  In general sized iron ore of 5-18mm is used in the process of manufacture of sponge iron on all types of rotary kiln with +16mm not exceeding 15-20%.The mean particle size of iron ore shall be restricted to 11mm in order to achieve uniform Fe metallic of all grain size fraction of the product.

More

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

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.

More

2 D Model of Sponge Iron Rotary Kiln Developed Using CFD

2015-5-17  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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Shah Sponge Power Limited, Jamshedpur -

Sponge iron production using coal involves Reducing iron- ore with coal or lignite. The reduction is carried out in a Rotary Kiln at a pre-determined temperature and controlled atmosphere. The input raw material i.e. irons ore, coal and limestone in the required range of speeds.

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Sponge iron making process - SlideShare

2014-11-9  Sponge iron making process 1. ALBERTUS SEPTYANTOKO 2712100014 2. IRON ORE • Iron = 65-67 % • SiO2 + Al2O3 = 2-3 % • CaO + MgO = 0,5-1 % • Sulphur = 0,02 % max • Phosphorus = 0,04 % max Chemical Composition • Size = 5-18 mm • Shatter Index = +95 % • Tumbler index = +88 % • Reducibility Index = +94 % • Thermal Degradation Index = 5 % Physical Composition

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(PDF) Analysis of temperature profile and %

study the kiln of sponge iron process, literature relat ed to it is dis- cussed here: Prasad and Ray [9] simulated flow pattern of air us- ing FLUENT software in rotary kiln of a typical 10 0 tpd ...

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Coal Base DRI Operation: Process Description and flow ...

2020-12-2  • Sponge iron produced by the process will be the high grade which contains 80% Fe, 12% FeO and 8% gangue material. After separation of sponge iron in the magnetic screen/pulley, the remains are collected as char. Char has good amount of fixed carbon (25% - 30%) and moderate GCV (2500 -

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