use of fines for sponge iron production in coal based rotary kiln

Coal Based Sponge Iron Industry - A Prime Mover to . - SteelworldThis fraction mainly –1mm initially used to be contaminated with fine . In coal based sponge iron technology, the furnace (rotary kiln) fulfils various functions.use of fines for sponge iron production in coal based rotary kiln,Rotary Kiln Process of Making Sponge Iron - New Age InternationalThe production of steel began in ancient times; but because of . The coal based rotary kiln process of making sponge iron is the .. Fine coal. Sponge iron. Char. Air. Rotary kiln. Thermocouples. Waste gas. Coal. Flux . Use of 6 to 20 mm iron ore is indicated. Presently it is more common to use 5 to 18 mm fraction. A typical.

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use of fines for sponge iron production in coal based rotary kiln

use of fines for sponge iron production in coal based rotary kiln,

Prospects for Coal-based Direct Reduction Process

Dec 29, 2010 . rotary kilns. Pellets, or lump-ore, . a coal-based reduction process using a rotary hearth furnace (RHF) in . iron ore fines, steel mill waste and non-coking coal. This paper . named "FASTMET," for producing DRI from carbon composite . This impedes the commercial use of the process for producing DRI.

A study on the accretion formation in DRI kilns and . - IOSR journals

and pressures within a rotary kiln generates sponge iron as a product. . Sponge iron is the metallic form of iron produced from reduction of iron oxide below the fusion . widely used as a reactor in coal based plants and the important processes .. fine generation is high which is more prone to accretion formation. 2. Coal:.

Spotlight on coal-based direct reduction at iscor - SAIMM

to install the 100 per cent coal-based rotary-kiln direct- . route to use is based on technology as much as on . Direct reduction is a method of producing sponge iron from iron . use of fine ore they can be operated on a fluidized-bed system.

sponge iron production from ore -coal composite pellets in tunnel kiln

Keywords: Tunnel Kiln, Iron ore-coal composite pellets, Sponge iron, Thermal efficiency,. Carbon utilization . production from beneficiated iron ore fines cakes. In this process, the . Since it is gas based process, it is also environmentally clean. Unlike rotary kiln, heating is external and therefore it permits the use of different.

Accretion Control in Sponge Iron Production Kiln using . - Iiste . Org

This paper proposes the control of accretion build up through the application of . 2 KILN BASED SPONGE IRON PRODUCTION PROCESS . For direct reduction in the inclined rotary kiln, iron ore and coal pass through . of the agglomeration of fines nearer to the charge end or because of sintering of sponge iron due to.

DRI Rotary Kiln Gasifier |Coal Gasifier for DRI | Sponge Iron Industry .

CASE Gasifier for DRI Rotary Kiln is Automatic PLC Controlled gasification equipment . introduces the replacement of coal fines used in Rotary Kiln to coal gas.


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 Fines. Fe (M). 80 ± 2 . lead of USA. SL/RN technology is a coal based rotary kiln direct reduction process.

Manufacturing Process - Sree Metaliks Ltd

Iron Ore Fines . Sponge Iron Manufacturing Process In Rotary Kiln . The SL/RN Process is the most widely used coal based reduction Technology the world.

Recovery and utilization of waste heat in a coal based sponge iron .

Recovery and utilization of waste heat in a coal based sponge iron process. Vivek Kumar . iron exiting rotary kiln and further hot water is used to preheat air. . Sponge iron is the metallic form of iron produced from reduc- . Fines of iron.

Recent Developments in Iron and Steel Making Industry

dovetailed with gas based DRI has led to successful creation of this . Corex. Midrex,HYL,. MidrexOXY+AREX. Rotary Kiln. Ore Fines. Star Furnace. Romelt.

use of fines for sponge iron production in coal based rotary kiln,

Different processes of Sponge Iron production – A . - ResearchGate

The principal raw materials used are iron ore, coal and line/dolomite. .. Different coal based sponge iron production processes are described as: . The solids are discharged forms the rotary kiln via transfer chute into a sealed rotary cooler. . The solid is continuously separated into DRI, DRI fines, non magnetic by a.

Study of Reduction Behaviour Of Iron Ore Lumps A - ethesis - NIT .

For all the fired iron ore pellets, the degree of reduction in coal was more . gas etc. The fast depletion of high grade cooking coal, reserves restricts the use of . vigorously in the country instead of natural gas based Shaft furnace or Retort . Rotary Kiln Processes are very useful for Sponge Iron Production using non-coking.

Sponge Iron Industry - Central Pollution Control Board

Mar 20, 2007 . and OSIL are in use while gas based plants have predominantly used .. coal based rotary kilns produce DRI lumps/ pellet being more stable can be ... The final product can be in the form of fines, lumps, briquettes or pellets.

New Ironmaking Processes: Relevance To India - IIM

More than 90% of world iron production is through Blast . Iron ore fines can be used directly (except COREX). – Lesser pollution . Both gas-based & coal-based DRI technology readily . India: Pollution specially rotary Kiln processes.


High value addition through direct use of ore fines . tional SL/RN direct reduction plants based on a rotary kiln, with . Fines, concentrates. Outotec solution. Coal based. Outotec solution . years to produce direct reduced iron (DRI) from lump ores or iron ore . tion in a single-plant setup, this process can improve kiln.

Schedule - Association for Iron & Steel Technology

Development and application of alternative ironmaking processes to provide . in the production of DRI through this preferred route of coal-based rotary kilns. .. of fines or sludges, making direct use in metallurgical vessels challenging.

Study on Accretion Formation on DRI kiln during spong iron production

accretion formation also lead to the shutdown of the kiln in regular . industry only in 1980, when the coal based DRI plant of. Sponge . can be in the form of fines, lumps, briquettes or pellets. Sponge . conducted in a refractory lined rotary kiln. The kiln of . at the kiln discharge end is used with LDO for heating the cold kiln.

Computational fluid dynamics analysis of sponge iron rotary kiln

Rotary kiln is the primary equipment in sponge iron industry, which is used to . [8] developed a CFD based 3D model for simulation of combustion and heat .. For effective coal injection, the mixture of fine coal 0–0.5 mm and coarse coal 2–4.

Sponge Iron - Welcome to Thermal Systems

At the heart of Sponge Iron making is the Rotary Kiln, Iron Ore and Coal are fed to . Based on our experience, we have selected the Boiler to meet the above condition. . of "lumps" and fine particles of char are also produced by the kiln as byproducts . We propose to use them for thermal generation of electricity through.

Energy Audit Methodology of Sponge Iron Manufacturing Units .

Aug 18, 2014 . required to pay heavy penalty for the excess amount of energy consumed (toe). . rotary Kiln and product sponge iron along with char is taken out from the other end. . Plants in India use wide variety of raw material and coal which has ... Table 5. Actual mass balance based on plant data. Iron ore. 1.55 Kg.

why magnetite ore not used in the sponge iron rotary kiln –

In Sponge Iron industry Rotary kiln is the key equipment used to reduce iron ore to. . or iron ore pellets with the help of non-coking coal in Rotary Kiln (in Coal based … . Use of iron ore pellets apart from utilizing low quality iron fines, also.

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