CN1804049A - Tunnel kiln without exterior combustion ...
technical scheme: with the coal is that reductive agent uses the tunnel kiln of no exterior combustion chamber and combination tunnel kiln pot type method thereof to …
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Direct Reduced Iron (DRI) | International Iron Metallics ...
Direct Reduced Iron (DRI) is the product of the direct reduction of iron ore in the solid state by carbon monoxide and hydrogen derived from natural gas or coal. See more information about the production of DRI .
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CN1804049A - Tunnel kiln without exterior combustion ...
The relates coal-base direct reduction process for sponge iron with different shape by tunnel kiln without outer combustion chamber and the combination comprises as shown in abstract figure: to iron concentrate, firing pellet, cooling or compacting; preparing the reducer; blending, loading into retort; entering the kiln; out the kiln; and sorting.
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CASE GROUP
CASE GROUP. DRI Tunnel Kiln. FINES TO SPONGE. FINES TO SPONGE DRI (Direct Reduced Iron) Tunnel Kiln was commissioned on 24 November 2011. CASE gave this technology to India and this was also first of its kind in India. …
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Sponge iron production in tunnel kiln – Aramico Company
The main advantage of tunnel kiln process is the possibility to build small plants with low investment costs which are feasible economically. Due to Iran prospect of producing 55 million tons steel until 2020, direct reduction processes have been developed in Iran and sponge iron is a very good charge for steelmaking furnaces instead of iron scrap.
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Direct Reduced Iron (DRI) | International Iron Metallics ...
DRI can be either hot or cold charged to the EAF. Some steel companies ship DRI from their captive direct reduction plants to their remote steel mills and a small volume of DRI is sold to third parties. In India there are many small rotary kiln furnaces producing DRI, known locally as sponge iron, using coal as energy and reductant source.
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Direct Reduced Iron | Industrial Efficiency Technology ...
Direct Reduced Iron (DRI), also known as Sponge Iron, offers an alternative steel production route to BF-BOF and Scrap-EAF routes. In DRI, iron ore is reduced in its solid state – unlike BF process where a liquid metal is formed during reduction. DRI can then be transformed to steel in electric arc furnaces. DRI production is common in Middle East, South America, India and …
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Direct reduced iron - Wikipedia
Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) into iron by a reducing gas or elemental carbon produced from natural gas or coal.Many ores are suitable for direct reduction. Direct reduction refers to solid-state processes which reduce iron oxides to metallic iron at temperatures …
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DRI production | International Iron Metallics Association
DRI production. Direct reduction of iron is the removal of oxygen from iron ore or other iron bearing materials in the solid state, i.e. without melting, as in the blast furnace. The reducing agents are carbon monoxide and hydrogen, coming from reformed natural gas, syngas or coal. Iron ore is used mostly in pellet and/or lumpy form.
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CASE GROUP
FINES TO SPONGE DRI (Direct Reduced Iron) Tunnel Kiln was commissioned on 24 November 2011. CASE gave this technology to India and this was also first of its kind in India. The process has been established now after earlier hiccups.
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Reduction of iron ore briquettes into DRI in the tunnel ...
We offer third generation tunnel kiln process from China, to convert soft iron ore lumps or briquetted iron ore fines into Direct Reduced Iron (DRI). DRI or sponge iron is a high-quality metallic product and used as a feed-stock in the induction furnace / electric arc furnace. The investments on the tunnel kiln plants are 20-25% lower than the ...
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(PDF) Production of Sponge Iron through Tunnel Kiln …
Production of Sponge Iron through Tunnel Kiln Process. April 2010; ... Experimental Study on Direct Reduction of Nb-Bearing Iron Concentrate in Cylinder Reaction ...
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Production of Sponge Iron through Tunnel Kiln Process
Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon ...
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Direct Reduced Iron | Industrial Efficiency Technology ...
19 Direct Reduced Iron (DRI), also known as Sponge Iron, offers an alternative steel …
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Direct Reduced Iron | Iron and Steel | Howden
The direct reduction process drives off the oxygen in order to convert the ore, utilizing gas, coal, or oil as fuel. Blowers are used in the process to supply combustion air into the reformers and a process gas compressors, seal gas compressor, and a cooling gas compressor are required to help circulating the process gas in the system.
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Reduction of iron ore briquettes into DRI in the tunnel ...
GoodRich offers third generation tunnel kiln process from China, to convert soft iron ore lumps or briquetted iron ore fines into Direct Reduced Iron (DRI). DRI or sponge iron is a high-quality metallic product and used as a feed-stock in the induction furnace / electric arc furnace.
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SPONGE IRON PRODUCTION FROM ORE -COAL …
Keywords: Tunnel Kiln, Iron ore-coal composite pellets, Sponge iron, Thermal efficiency, Carbon utilization efficiency, Percentage metallic iron . 1. INTRODUCTION The tunnel kilns are mostly used by the ceramic industries for heating refractory and ceramic products [1-2]. In the year 1908 use of tunnel kiln started for iron oxide reduction. This
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Direct-Reduced Iron - an overview | ScienceDirect Topics
Direct reduced iron is iron ore in the form of lumps, fines or pellets that have had the oxygen removed by using hydrogen and carbon monoxide. Typical sources of carbon monoxide are natural gas, coal gas, and coal. Other energy inputs into the production process often include oil and electricity.
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Direct reduced iron - Wikipedia
Hot direct reduced iron (HDRI) is DRI that is transported hot, directly from the reduction furnace, into an electric arc furnace, thereby saving energy. The direct reduction process uses pelletized iron ore or natural "lump" ore. One exception is the fluidized bed process which requires sized iron ore particles.
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Direct-Reduced Iron - an overview | ScienceDirect Topics
In direct reduction the ore is heated to temperatures below its melting point. Direct energy requirements per net ton of direct reduced iron are in the order of 10,000 MJ. The product is 90 to 95% metallized and hence is suitable as a charge in blast, basic oxygen, and electric arc furnaces.
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(PDF) Production of Sponge Iron through Tunnel Kiln Process
Production of Sponge Iron through Tunnel Kiln Process. April 2010; ... Experimental Study on Direct Reduction of Nb-Bearing Iron Concentrate in Cylinder Reaction ...
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