processing iron sand to sponge iron by rotary kiln

processing iron sand to sponge iron by rotary kiln

OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION IN A

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 iron.

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

Rotary kiln is cylindrical in shape and is 80m long having 4.2m internal diameter. This is the reactor of the process where reduction as well as combustion reactions are carried 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:

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SPONGE IRON PLANT

The process proposed to be adopted is the rotary kiln proposes using Non-coking coal and iron ore. Iron are undergoes the following reduction reaction in all the processes Fe2o3+ 2 CO = 2 Fe + 3 Co2 As shown in above reactions, carbon monoxide is reducing gases.

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Rotary Kiln Process Of Making Sponge Iron

process of sponge iron by rotary kiln – Grinding Mill China. Posted at: January 5, 2013 . Rotary Kiln Process of Making Sponge Iron The production of steel began in ancient times; but because of the complexity. Click Chat Now

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A Thesis Submitted for Partial Fulfillment of the Degree ...

clusters and agglomerates are common in both rotary kiln and shaft based processes. In the presence of context we cannot conceive of a reactor to manufacture sponge iron, which operate above 11000C, even though there have been prolonged attempts to produce sponge iron and semi-fused iron at

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Accretion Control in Sponge Iron Production Kiln using ...

This study focuses on sponge iron kiln based process. The chemical process involved in making sponge iron removes oxygen from iron ore by using a reducing agent in the form of non-coking coal [Patra et al, (2005)]. The reduction process is carried out in an inclined horizontal rotary kiln, which rotates at a programmed speed.

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SL - RN (Iron Making Rotary Kiln Process for DRI ...

01-11-2015  (SL/RN) Stelco-Lurgi/Republic-National rotary kiln process About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features © 2020 ...

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New Concept of Hot Metal Production using Rotary Kiln ...

27-09-2013  Hot sponge iron from rotary kiln shall be smelted directly by continuously charging into smelting reduction furnace. The smelting furnace itself is equipped with stoves to preheat the hot blast air.

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China Rotary Kiln Process of Making Sponge Iron - China ...

China Rotary Kiln Process of Making Sponge Iron, Find details about China Rotary Kiln Process of Making Sponge Iron, Sponge Iron Rotary Kiln from Rotary Kiln Process of Making Sponge Iron - Luoyang Zhongtai Industries Co., Ltd.

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A Thesis Submitted for Partial Fulfillment of the Degree ...

clusters and agglomerates are common in both rotary kiln and shaft based processes. In the presence of context we cannot conceive of a reactor to manufacture sponge iron, which operate above 11000C, even though there have been prolonged attempts to produce sponge iron and semi-fused iron at

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THE KRUPP SPONGE IRON PROCESS PRODUCTION AND UTILISATION ...

leaving the rotary kiln and prehardened to a compressive strength of at least 10 kgf/pellet. This strength is necessary for subsequent treat-ment in the rotary kiln. Experience with different raw materials In the past, a number of different ores and fuels have been tested for their amenability to treatment by the KRUPP Sponge Iron Process.

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MAKING OF IRON NUGGET FROM CONCENTRATED

In this study, reduction process of iron sand concentrates with coal as the reductant was accomplished in a mini-sized rotary kiln (0.6 m diameter and 6 m length). The process of iron nugget making from iron sand concentrate was conducted in two (2) stages, namely oxidation and reduction processes.

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Modelling and optimization of a rotary kiln direct ...

Rotary kilns (Figure 1) are used for a range of mineral processing operations. Kilns range in size from 2–6 m in diameter and can be 50–225 m long with an operating mass of up to 3000 t. Two of the most common applications are for cement production and sponge iron production. Hatch has developed a proprietary one-dimensional kiln model to

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[PDF] Modeling of rotary kiln for sponge iron processing ...

This kiln is of length 80m. and inner diameter 4.34m. Kiln was assigned with 9 air tubes to get a maximum turbulence for better temperature profile.A horizontal cross-section of kiln was modelled in a 2D geometry.These air tubes are separated from Inlet end to outlet end at distances of 8.1, 8.1,5.7, 6.7, 6.7, 6.7, 6.7 4.6 respectively.

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sponge iron process

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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New Concept of Hot Metal Production using Rotary Kiln ...

Hot sponge iron from rotary kiln shall be smelted directly by continuously charging into smelting reduction furnace. The smelting furnace itself is equipped with stoves to preheat the hot blast...

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rotary kiln spong iron - paula-rilke-rodin

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 8001200 c iron oxide is charged into shaft furnace rotary kiln or fluidized beds in the form of pellet iron

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Computational fluid dynamics analysis of sponge iron ...

01-03-2017  Simulation of rotary kiln for sponge iron process is based on combustion of coal particles and reduction of iron ore. The heat transfer inside the kiln is done through radiation. The model equations used for computation of desired parameters, such as temperature profile and % metallization, are tabulated in Table 3.

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ORISSA SPONGE IRON AND STEEL LTD.

Coal acts as the reductant to romove oxygen from iron ore. The process of reduction causes micro pores in the ore body turning it porous. Directly reduced iron looks like sponge in texture due to pores and hence is called sponge iron. Iron Ore after due reduction

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MAKING OF IRON NUGGET FROM CONCENTRATED

In this study, reduction process of iron sand concentrates with coal as the reductant was accomplished in a mini-sized rotary kiln (0.6 m diameter and 6 m length). The process of iron nugget making from iron sand concentrate was conducted in two (2) stages, namely oxidation and reduction processes.

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THE KRUPP SPONGE IRON PROCESS PRODUCTION AND UTILISATION ...

leaving the rotary kiln and prehardened to a compressive strength of at least 10 kgf/pellet. This strength is necessary for subsequent treat-ment in the rotary kiln. Experience with different raw materials In the past, a number of different ores and fuels have been tested for their amenability to treatment by the KRUPP Sponge Iron Process.

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[PDF] Modeling of rotary kiln for sponge iron processing ...

This kiln is of length 80m. and inner diameter 4.34m. Kiln was assigned with 9 air tubes to get a maximum turbulence for better temperature profile.A horizontal cross-section of kiln was modelled in a 2D geometry.These air tubes are separated from Inlet end to outlet end at distances of 8.1, 8.1,5.7, 6.7, 6.7, 6.7, 6.7 4.6 respectively.

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sponge iron process

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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rotary kiln spong iron - paula-rilke-rodin

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 8001200 c iron oxide is charged into shaft furnace rotary kiln or fluidized beds in the form of pellet iron

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Modelling and optimization of a rotary kiln direct ...

Rotary kilns (Figure 1) are used for a range of mineral processing operations. Kilns range in size from 2–6 m in diameter and can be 50–225 m long with an operating mass of up to 3000 t. Two of the most common applications are for cement production and sponge iron production. Hatch has developed a proprietary one-dimensional kiln model to

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Computational fluid dynamics analysis of sponge iron ...

01-03-2017  Simulation of rotary kiln for sponge iron process is based on combustion of coal particles and reduction of iron ore. The heat transfer inside the kiln is done through radiation. The model equations used for computation of desired parameters, such as temperature profile and % metallization, are tabulated in Table 3.

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Rotary Kiln Iron Ore - spadkowepostepowanie

OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION . erection. The SL-RN process also uses rotary kiln for reducing iron ore. The plant, as shown in Fig. 2, essentially consists of raw material handling and preparation systems, rotary kiln with heat-ing arrangements for reduction of iron oxide, kiln for cooling the reduced material and the facilities for separating sponge iron from char

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ORISSA SPONGE IRON AND STEEL LTD.

Coal acts as the reductant to romove oxygen from iron ore. The process of reduction causes micro pores in the ore body turning it porous. Directly reduced iron looks like sponge in texture due to pores and hence is called sponge iron. Iron Ore after due reduction

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difference between sponge iron kiln and cement kiln «

Sponge Iron (SI): DRI is also known as Sponge Iron because of its spongy micro structure. ore lumps or iron ore pellets with the help of non-coking coal in Rotary Kiln (in Coal based Plants) .. But usually iron content of ores ranges between 50-65/67% (rich ores) and 30-35% (lean ores); . Sinter Plant /Cement Industry »More detailed

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