dolomite in sponge iron process

SPONGE IRON – Lloyd's Metals

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 ...

SPONGE IRON PLANT

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 …

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

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. Raw material mix-iron ore, dolomite and coal are fed to one end of rotary Kiln as well as some fine coal also fed from discharge end and product sponge iron along with char is taken out from the other ...

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

Why does a sponge iron catch fire? – Restaurantnorman.com

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 …

A Case Study on Accretion Formation in Rotary Kiln of DRI ...

In coal-based DRI process, accretion formation inside the rotary kiln is a genuine complex problem. Accretion formation in a rotary kiln of 100 tpd DRI plant has been investigated. The nature of accretion formation with respect to the charge burden and operational parameter have been discussed. High ash content in the coal and excess use of dolomite lead to accretion formation. Two …

Sponge Iron :: TMT Next - Building The New

Direct-reduced Iron Production Kiln Sponge Iron Dri ...

Direct-reduced Iron Production Kiln Sponge Iron Dri Production Plant, Find Complete Details about Direct-reduced Iron Production Kiln Sponge Iron Dri Production Plant,Direct Reduced Iron Production Kiln,Dri Production Plant,Sponge Iron Dri Production from Cement Making Machinery Supplier or Manufacturer-Henan Dajia Mining Machinery Co., Ltd.

Coal based Direct Reduction Rotary Kiln Process – IspatGuru

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.

(PDF) i) Direct Reduced Iron: Production

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 …

tunnel process of sponge iron making

(PDF) Modeling of Rotary Kiln for Sponge Iron Processing ...

523-1 Designing of an Intelligent Fuzzy Logic System for Accretion Prevention in Sponge Iron SL/RN Rotary Kiln Based 100TPD Dri Process By Tawanda Mushiri and talon garikayi Industrial and Process Furnaces: Principles, Design and Operation

Development of energy conservations scenarios for sponge ...

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.

Calculation Process Of Dolomite In Rotary Kiln

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.

The sponge iron - سلامت پیشرو ایمن سپاهان | سپاس

The basic raw materials for the production of sponge iron are iron ore, non-coking coal and dolomite. 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 » SM AUTO

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

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.

Iron Ore To Steel Process Flow Chart - Blog.lif.co.id

Iron ore to steel raw material for manufacturing the tmt bar are iron ore coal dolomite in this process raw materials are piled recovered and mixed in required proportion the iron ore experiences beneficiation procedure to raise the iron substance at this point metal fines are gathered to shape a mass of pellets and sinter to improve.

Sponge iron global market - Simurgh iron and steel company

Sponge iron is produced using non-coking coal through the process of regenerating iron ore in a rotary kiln. The reduction occurs at a predetermined temperature and controlled atmospheric pressure. Input raw materials such as iron ore, coking coal in calibrated sizes and melting materials such as limestone and dolomite in calibrated sizes are ...

Sponge Iron – Prakash Industries Limited

Solid reduction process. 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 through electrical arc furnace and the induction ...

China High Quality Sponge Iron Powder Direct Reduced Iron ...

The basic raw materials for the production of sponge iron are iron ore, non-coking coal and dolomite. Sizing of the Raw materials also play vital role in sponge iron manufacturing process. Properties of Sponge Iron High iron content and high degree of metallization

PROCESS FOR PRODUCTION OF SPONGE IRON - …

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 ...

OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION …

1. Krupp Sponge Iron Process The Krupp. 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 ...

sponge iron process

The sulphur content in sponge iron is controlled by adding 1-6mm of limestone/dolomite along with feed materials which picks up sulphur from the coal preventing the sulphur pick up in sponge iron. the sulphur content in sponge iron can be controlled in the range 0.012 to 0,025%

US3165398A - Method of melting sponge iron - Google Patents

US3165398A US29518563A US3165398A US 3165398 A US3165398 A US 3165398A US 29518563 A US29518563 A US 29518563A US 3165398 A US3165398 A US 3165398A Authority US United States Prior art keywords iron temperature furnace sponge iron sponge Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Sponge iron making process - SlideShare

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 combustion the injection coal Temperature in used below 950 C 6. ...

Sponge iron Manufacturing process - Simurgh Industrial and ...

Explain manufacturing process of sponge iron . Sponge iron production is very sensitive to the characteristics of raw materials. Therefore, it is very important to study the chemical and physical properties of raw materials separately in the composition. Raw materials for the production of sponge iron include iron ore, non-coal, and dolomite.

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2 D Model of Sponge Iron Rotary Kiln Developed Using CFD

rotary kilns employed in sponge iron process. Using this model the effects of variations of input parameters, such as angle of inclination, number of rotation and mass flow rate ... iron ore, coal & dolomite which is supplied at inlet stream at 300 K, (3) Sponge iron is considered as outlet stream, (4)

Lubrication of Girth Gears in Sponge Iron Plants

The major raw materials required for production of sponge iron are oxides of iron in the form of lump iron, pellets, non-coking coal and fluxes (limestone and dolomite). Use of high purity of lump ore, pellets with low phosphorus at an economic price helps in the cost effective production of sponge iron.

Energy Audit Methodology of Sponge Iron Manufacturing ...

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