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rotary earth furnace iron ore reduction equipment

UDC 669 . 054 . 83 : 66 . 041 . 49 Dust Recycling System

Abstract Dust recycling technology by the rotary hearth furnace has been applied at Nippon Steel’s Kimitsu Works since 2000. The dust and sludge with iron oxide and carbon are agglomerated into shaped articles and the iron oxide is reduced in a high tem- perature atmosphere.

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AMO Steel: Ironmaking Quality and Supply Critical to Steel

cess uses a rotary hearth furnace to turn iron ore fines and pulverized coal into high nugget purity (96-98% metallic iron content). Reduction, melting, and slag removal occur in only 10 minutes. ITmk3® process flow sheet reveals a one-step furnace operation.

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Zero-carbon steel making

the direct reduced iron (DRI) route, wherein solid-state reduction of the iron ore is performed in a shaft furnace (eg. MIDREX, HYL, Energiron etc.), rotary kiln (eg. Krupp-Codir), rotary hearth furnace (eg. FASTMET) or a uidised bed (eg. FINMET), followed by reduction in an electric arc furnace (EAF). DRI can be produced using coal or natural

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C21B 11 Making pig-iron other than in blast furnaces

CN102242233B Oxygen blasting tuyere of COREX (coal reduction extreme) furnace : 01/30/2013: CN102199681B Method for separating and enriching iron and rare earth in rare earth crude ore containing iron

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The iron and steel industry: a global market perspective

reduction units, which may be shaft furnaces, rotary kiln furnaces, or fluidized beds). The blast furnace-based process uses sinter, pellets, lump ore and coke. All the inputs are charged to the top of the furnace, and heated to remove oxygen fromthe iron ore and produce the hot metal.

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Dust and Sludge Recycling with the Rotary Hearth Furnace

Dust and Sludge Recycling with the Rotary Hearth Furnace 1. Introduction The dust and sludge generated from the steelworks are composed mostly of iron and carbon. Recycling dust and sludge is beneficial because they reduce iron ore and coke consumptions. However, due to the limitations of zinc content in the dust and sludge, their com-

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(PDF) Modeling of Rotary Kiln for Sponge Iron Processing

Iron ore is reduced in solid state at 800 to 1,050 °C (1,472 to 1,922 °F) either by reducing gas (H 2 DR process have developed well and vigorously in the country instead of natural gas based Shaft furnace or Retort furnace.India companies adopt different technologies to reduce iron ore (Fe 2 O 3 ) into sponge iron

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Zero-carbon steel making

the direct reduced iron (DRI) route, wherein solid-state reduction of the iron ore is performed in a shaft furnace (eg. MIDREX, HYL, Energiron etc.), rotary kiln (eg. Krupp-Codir), rotary hearth furnace (eg. FASTMET) or a uidised bed (eg. FINMET), followed by reduction in an electric arc furnace (EAF). DRI can be produced using coal or natural

More

Suspension Hydrogen Reduction of Iron Oxide Concentrates

An example is a rotary hearth furnace (RHF) linked to a smelter (e.g., AISI, HIsmelt). The objective of this research is to select promising process combinations, develop energy, materials balance and productivity models for the individual processes, conduct a limited amount of basic research on the processes and evaluate the process combinations.

More

C21B 11 Making pig-iron other than in blast furnaces

CN102242233B Oxygen blasting tuyere of COREX (coal reduction extreme) furnace : 01/30/2013: CN102199681B Method for separating and enriching iron and rare earth in rare earth crude ore containing iron

More

The iron and steel industry: a global market perspective

reduction units, which may be shaft furnaces, rotary kiln furnaces, or fluidized beds). The blast furnace-based process uses sinter, pellets, lump ore and coke. All the inputs are charged to the top of the furnace, and heated to remove oxygen fromthe iron ore and produce the hot metal.

More

Pre-processing of metallurgical wastes by direct reduction

The aim of this joint research project of CRM, IRSID and TKS was to evaluate a new recycling route for the various iron-bearing wastes that arise in the steel industry. The proposed recycling route consists in pre-processing these wastes by the COMET direct reduction process. With the existing electrical heating system of the COMET small rotary hearth furnace at CRM, the furnace atmosphere is

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Talk:HIsarna ironmaking process Wikipedia

Kobe Steel's ITmk3 (Iron Technology Mark III) direct reduction process which improved throughput (but not the other drawbacks) by using a rotary hearth semi-fluidised bed furnace operating at 1500 Celcius. Iron nuggets had to still be magnetically separated from slag with size screening.

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(PDF) The utilisation of iron ore fines : Technical

MATER SC., Vol. 55, No. 3, 2013 251 R.C. GUPTA Radiated Heat Flue Gases Furnace Seal layer Ore Reductant RHF Bottom A-B Drying Zone /Heating Zone, B-C Pre-reduction zone C-F Reduction zone F-H Cooling zone H-I Hearth preparation Thermal Profile Fig. 20 : Preparation of DRI granules visualising RHF technique 252 J. MET. MATER SC., Vol. 55, No. 3

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SPONGE IRON PRODUCTION BY DIRECT REDUCTION OF IRON

Sep 12, 2012 This book provides a fascinating study of the very important emerging field of direct reduction in which iron ore is ‘directly reduced’ in the solid-state, using either natural gas or non-coking coal, to produce a highly metallised material, referred to as sponge iron (or direct reduced iron). This intermediate product is subsequently melted in electric arc furnaces or induction furnaces

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Rotary Hearth Furnace (RHF) NIPPON STEEL ENGINEERING

A rotary hearth furnace is a direct-reduction device that enables to recover valuable metals from dust produced during the steelmaking process, as well as to produce direct-reduced iron from fine ore. Steel mills generate various kinds of dust that are produced during the steelmaking process.

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TOWARDS SUSTAINABLE DEVELOPMENT Stanford

If the oxygen atom “O” is from iron oxides, the reaction is reduction of iron ore. SIMPLE‐ •By heating ore/coal composite agglomerates in a Rotary Hearth Furnace (RHF) •Rotary Kiln ( T?) ORE/COAL COMPOSITE PELLETS It is made of mixture of fine ore and coal And

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Rotary Hearth Furnace Manufacturer from Durgapur

Manufacturer of Rotary Hearth Furnace offered by Horizon Consultants, Durgapur, West Bengal. IndiaMART. Get Best Price. This is the Latest Technology to Produce the Pig Iron or MS Iron out of the Iron Ore Fines and Non-coking Coal. The entire time for the Reduction, Melting and Product Out will be around 45 min, so the larger capacity

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Project FILER (Flexible Input Low Emission Reduction of

Project FILER (Flexible Input Low Emission Reduction of Ore) is concerned with the microwave assisted direct reduction of iron ore (DRI). This is proposed as an allelectric replacement of the conventional blast furnace process and offers the potential

More

Rotary Hearth Furnace (RHF) NIPPON STEEL ENGINEERING

A rotary hearth furnace is a direct-reduction device that enables to recover valuable metals from dust produced during the steelmaking process, as well as to produce direct-reduced iron from fine ore. Steel mills generate various kinds of dust that are

More

Suspension Hydrogen Reduction of Iron Oxide Concentrates

An example is a rotary hearth furnace (RHF) linked to a smelter (e.g., AISI, HIsmelt). The objective of this research is to select promising process combinations, develop energy, materials balance and productivity models for the individual processes, conduct a limited amount of basic research on the processes and evaluate the process combinations.

More

Zero-carbon steel making

the direct reduced iron (DRI) route, wherein solid-state reduction of the iron ore is performed in a shaft furnace (eg. MIDREX, HYL, Energiron etc.), rotary kiln (eg. Krupp-Codir), rotary hearth furnace (eg. FASTMET) or a uidised bed (eg. FINMET), followed by reduction in an electric arc furnace (EAF). DRI can be produced using coal or natural

More

TOWARDS SUSTAINABLE DEVELOPMENT Stanford

If the oxygen atom “O” is from iron oxides, the reaction is reduction of iron ore. SIMPLE‐ •By heating ore/coal composite agglomerates in a Rotary Hearth Furnace (RHF) •Rotary Kiln ( T?) ORE/COAL COMPOSITE PELLETS It is made of mixture of fine ore and coal And

More

Pre-processing of metallurgical wastes by direct reduction

The aim of this joint research project of CRM, IRSID and TKS was to evaluate a new recycling route for the various iron-bearing wastes that arise in the steel industry. The proposed recycling route consists in pre-processing these wastes by the COMET direct reduction process. With the existing electrical heating system of the COMET small rotary hearth furnace at CRM, the furnace atmosphere is

More

Project FILER (Flexible Input Low Emission Reduction of

Project FILER (Flexible Input Low Emission Reduction of Ore) is concerned with the microwave assisted direct reduction of iron ore (DRI). This is proposed as an allelectric replacement of the conventional blast furnace process and offers the potential

More

(PDF) The utilisation of iron ore fines : Technical

MATER SC., Vol. 55, No. 3, 2013 251 R.C. GUPTA Radiated Heat Flue Gases Furnace Seal layer Ore Reductant RHF Bottom A-B Drying Zone /Heating Zone, B-C Pre-reduction zone C-F Reduction zone F-H Cooling zone H-I Hearth preparation Thermal Profile Fig. 20 : Preparation of DRI granules visualising RHF technique 252 J. MET. MATER SC., Vol. 55, No. 3

More

SPONGE IRON PRODUCTION BY DIRECT REDUCTION OF IRON

Sep 12, 2012 This book provides a fascinating study of the very important emerging field of direct reduction in which iron ore is ‘directly reduced’ in the solid-state, using either natural gas or non-coking coal, to produce a highly metallised material, referred to as sponge iron (or direct reduced iron). This intermediate product is subsequently melted in electric arc furnaces or induction furnaces

More

Production voestalpine Stahl Donawitz GmbH

In nature, iron occurs as ore. In mining, the ore is extracted from the rock and processed. To make iron from the ore, it is reduced and melted in a blast furnace with coke at over 1300°C. The resulting pig iron contains more than 2% carbon and cannot be used for products in this form.

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IRONMAKING AND STEELMAKING : THEORY AND PRACTICE

5.3.1Kinetics of Reduction of Iron Oxides by CO and H2 92 5.3.2 Kinetics of Gasification of Carbon by CO2 95 5.3.3 Kinetics of Reduction of FeO by Carbon 96 5.3.4 Direct and Indirect Reduction in the Blast Furnace 97 5.4 Reactions and Phenomena in the Blast Furnace Bosh and Hearth 99 5.4.1 Blast Furnace Slag—Composition and Viscosity 100

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Primary Metal Production Chemical Engineering

An iron ore blast furnace is a typical example of a shaft furnace. Muffle Furnace This type of furnace is used when the material being heated should not be contaminated by the heating fuel. This is accomplished by enclosing the material in a chamber, with the fuel burned outside of the chamber, as shown in Figure 2 Hearth Furnace

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Economic aspects of direct reduction of iron ore in Illinois

oreinaverticalshaftfurnace,arotaryortunnelkiln,orothertypesofhearthor gratefurnaces to producelumps or particles of "sponge" iron. Some direct-reduction processesuse coke,char,anthracite fines,or coal

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Rotary Hearth Furnace Manufacturer from Durgapur

Manufacturer of Rotary Hearth Furnace offered by Horizon Consultants, Durgapur, West Bengal. IndiaMART. Get Best Price. This is the Latest Technology to Produce the Pig Iron or MS Iron out of the Iron Ore Fines and Non-coking Coal. The entire time for the Reduction, Melting and Product Out will be around 45 min, so the larger capacity

More

COURSE50 Technologies to support COURSE 50

Improvement of coke The characteristics required for coke for hydrogen reduction. It is expected that CO 2 emissions will be decreased in blast furnaces when iron ore is reduced by hydrogen contained in reformed coke oven gas, because the coke feed ratio can be lowered compared with the conventional practice. On the other hand, it is foreseen that high strength coke is required to maintain the

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