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HGT Hydraulic Gyratory Crusher

HGT Hydraulic Gyratory Crusher

HGT Gyratory Crusher is a new-type intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent controlling technologies which grant it with advantages traditional crushing

European Type Jaw Crusher PEW

European Type Jaw Crusher PEW

Jaw crushers has stationary jaw crusher, portable jaw crusher and mobile jaw crusher (crawler jaw crusher). Jaw crusher (PEW Series) is not only able to be used together with mine-selecting and gravel processing equipments but also be used independen

Jaw Crusher PE

Jaw Crusher PE

Jaw crusher is driven by a motor, and the moving jaw moves up and down via eccentric shaft. The angle between fixed jaw and moving jaw becomes smaller when the moving jaw runs down, then the materials are crushed into pieces. It will become bigger whe

HPT Hydraulic Cone Crusher

HPT Hydraulic Cone Crusher

Base on the latest technology and decades of years’ producing experience, Our Company designed the HPT series cone crusher. It has excellent crushing efficiency and good hydraulic control system. Now the HPC series cone crusher has wide application

HST Hydraulic Cone Crusher

HST Hydraulic Cone Crusher

HST Single Cylinder Hydraulic Cone Crusher is a new high-efficiency cone crusher independently researched, developed and designed by SBM through summarizing over twenty years of experience and widely absorbing advanced American and German technologies

CI5X Series Impact Crusher

CI5X Series Impact Crusher

CI5X Impact Crusher breaks materials with impact force. When materials enter the working area of hammer, they may be crushed under the high-speed shock and then thrown onto the impact device above the rotor for another crushing. Next, materials bounce

VSI6X Series Vertical Crusher

VSI6X Series Vertical Crusher

Due to the increasing market demand for the scale, intensification, energy conservation, environment protection and high-quality machine-made sand, SBM, a Chinese professional sand maker manufacturer, further optimizes the structure and function of tr

VSI5X Vertical Shaft Impact Crusher

VSI5X Vertical Shaft Impact Crusher

VSI Crushers Working Principle Raw material falls down into feed hopper, and then enters rotor through central entrance hole. It is accelerated in high-speed rotor, and then is thrown out at speed of 60-75m/s. When hitting anvil, it is crushed. Final

VSI Vertical Shaft Impact Crusher

VSI Vertical Shaft Impact Crusher

VSI Series vertical shaft impact crusher is designed by reputed German expert of SBM and every index is in worlds leading standard. It incorporates three crushing types and it can be operated 720 hours continuously. Nowadays, VSI crusher has replaced

VUS aggregate optimization system

VUS aggregate optimization system

The VU system is a global most-advanced dry-process sand-making system. The system is constructed like a tower. Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimizatio

MTW-Z European Trapezium Mill

MTW-Z European Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

5X Series Roller Grinding Mill

5X Series Roller Grinding Mill

Grinding roller of MB5X Pendulum Roller Grinding Mill l adopts diluted oil lubrication. It is a technology initiated domestically which is maintenance-free and easy to operate. Diluted oil lubrication is oil bath lubrication, more convenient than grea

MTW Trapezium Mill

MTW Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

LM Vertical Mill

LM Vertical Mill

LM Vertical Grinding Mill integrates crushing, drying, grinding, separating and transport. The structure is simple while the layout is compact. Its occupational area is about 50% of that of the ball-milling system. The LM grinding mill can also be arr

TGM Trapezium Mill

TGM Trapezium Mill

TGM Super Pressure Trapezium Mill The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is

microwave iron direct reduced carbon

REDUCTION OF IRON ORE BY CHARCOAL UNDER

Reduction Of Iron Ore By Charcoal Under Microwave Irradiation 44 Reducing agent used in this research was charcoal which has fixed carbon content approximately 89.81% and the small amount of sulfur. Charcoal was mashed into microscopics scale up to 100 mesh in size using Ball Milling (Retsch PM-400 MA type). B. Reduction Process

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Direct Reduction Process - an overview ScienceDirect Topics

DRI is also known as sponge iron, it is a solid-state direct reduction process (Fig. 2.6). Coal, dolomite and iron ore or pellets are fed into one end of a rotary kiln, while sponge iron and char are withdrawn from the other end. Primary and secondary airs are supplied to the kiln to initiate combustion and reaction processes (Choudhury, 2014 ...

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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) to iron by a reducing gas or elemental carbon produced from natural gas or coal. Many ores are suitable for direct reduction.

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Microwave heating processes involving carbon materials ...

It was found that the process is influenced by the type of carbon used and that, under similar conditions of temperature, microwave reduction produces better results than those attained by conventional heating. Recently, a process for carrying out the carbothermic reduction of iron oxides using microwave heating has been patented .

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Direct Reduced Iron and its Production Processes – IspatGuru

Mar 16, 2013  DR process, DRI, HBI, Iron making. Metallization, reformed natural gas, residual elements, Rotary kiln, Direct reduced iron (DRI) is technically defined as iron ore which has been reduced to metal without melting it. Hot briquetted iron (HBI) is a densified form of DRI to facilitate its handling and transport. History

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Direct Reduced Iron (DRI) - Cargo Handbook - the world's ...

Direct-reduced iron (DRI), also called sponge iron, is produced from direct reduction of iron ore (in the form of lumps, pellets or fines) by a reducing gas produced from natural gas or coal. The reducing gas is a mixture majority of hydrogen (H2) and carbon monoxide (CO) which acts as reducing agent.

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Preparation of core-shell iron ore-biochar composite ...

Two types of iron concentrates, A and B, were used for the preparation and microwave reduction of iron ore-biochar composite pellets. Their main chemical compositions are shown in Table 1.Iron concentrate A was a major raw material with high iron grade (67.61%) and low hazardous elements, such as K, S and P, meeting the chemical composition requirements for DRI.

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Preparation and microwave absorption properties of carbon ...

Carbon-coated Fe 3 O 4 modified carbon nanotube/polypyrrole composites were prepared.. The weight percentage of the Fe 3 O 4 nanoparticles was only 8.8 %.. The nanocomposites exhibit excellent microwave absorption properties. • The maximum reflection loss is -53.07 dB at 13.92 GHz with a thickness of 2.2 mm.

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Direct reduction of iron in low temperature hydrogen plasma

Keywords: Hydrogen plasma, Direct reduced iron, Low temperature, Kinetics, Microwave power density Introduction In a recent publication,1 direct reduction of hematite at temperatures as low as 573 K in a microwave assisted non-thermal hydrogen plasma has been reported. The motivation for such a process was derived from several useful facts:

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Microwave absorption properties of core-shell structured ...

Though the microwave absorption performance of the core-shell structured [email protected] composites is similar to that of CIP composites, the weight fraction of [email protected] is reduced about 38% compared with CIP with the same volume fraction (25 vol%).

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Direct reduced iron process - tec-science

Direct reduced iron (DRI) process. In addition to the process route via the blast furnace process, there is another option for extracting crude steel from iron ores using the so-called direct reduced iron (DRI) process (secondary route).The starting point for the efforts to find an alternative to the blast furnace process was the relatively high process expenditure.

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Potential for CO2 emissions reduction in MIDREX direct ...

MIDREX ® Direct Reduced Iron Cooling Gas Scrubber Cooling Gas Compressor Iron Oxide Natural Gas is used as a reductant. Coke is not required. (Pellets/Lump Ore are reduced to produce DRI without being melt in the shaft furnace.) DRI is fed to EAF to produce steel. As the iron oxide descends through the furnace, the iron oxide is heated and reduced

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What is Direct Reduced Iron? (with picture)

Direct reduced iron (DRI) is a type of alternative iron made by heating iron ore so that the oxygen and carbon burns off while the temperature is kept below iron's melting point. Direct-reduced iron is also known as sponge iron and is sold as briquettes, lumps, or pellets.

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Energy Efficiency and CO emission reductions 2 in the Iron ...

gas for direct reduced iron technology and coal for smelting reduction. 20-25 % savings in CO 2 emissions in the smelting reduction process can be achieved if the additional coal is trans-formed into process gases, which are then captured and used to produce heat and electricity. At present in EU-27, only one plant uses direct-reduced iron tech -

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Preparation of core-shell iron ore-biochar composite ...

The TG-FTIR results confirm the direct reduction of iron oxides by carbon in graphite and torrefied biomass and the release of evolved CO2 instead of CO. ... The reduction of iron ore with coal by ...

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The Direct Reduction of Iron Ore

react with carbon, hydrogen or carbon monoxide, leaving the iron free as a metal. In most conventional steelmaking processes the ore is smelted, yielding a pig iron con­ taining reduced elements and a slag con­ taining all the oxidized and unreduced sub­ stances. The pig iron is melted and refined in a steelmaking furnace.

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Microwave-Intensified Reduction of Biochar-Containing ...

Abstract. The coal-based direct reduction process has gradually become the focus of research concerning direct reduced iron production due to its advantages, including high reduction rate, stable chemical composition, and good metallurgical properties of products.

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Ironmaking 101 – From Ore to Iron with Smelting and Direct ...

Oct 17, 2017  While the blast furnace remains an important tool for ironmaking, newer technologies such as smelting and direct iron reduction are available to produce iron with minimal byproduct generation and slag-free hot metal. Smelting reduction and direct iron reduction can reduce energy input, lower greenhouse gas emissions and minimize slag byproduct generation, resulting in overall cost ...

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Cost Effectiveness Analysis of HYL and Midrex DRI ...

Cost Effectiveness Analysis of HYL and drex DRI Te chnologies for the Iron and Steel-king Industry Pa ge 3 Executive SummaryExecutive Summary Climate change and reducing carbon dioxide (CO 2) emissions is an immense challenge for this world. Lowering CO 2 emissions is essential to the goal of limiting the global average temperature increase to

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US20080087135A1 - Microwave heating method and apparatus ...

A method and apparatus for reducing iron oxides using microwave heating in a furnace chamber which is sealed against the entrance of air reduces the energy required and produces a low temperature reduction and allows the recovery of combustible synthetic gas as a byproduct of the process. Avoidance of the reduction of sulfur, phorphorus and silica is also insured, as is the need to reduce

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Decarbonization of the Iron and Steel Industry with Direct ...

Mass and energy flow model based on an open-source software (Python) has been developed in this work to explore the feasibility of using hydrogen direct reduction of iron ore (HDRI) coupled with ...

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What is DIRECTLY-REDUCED IRON? What does DIRECTLY-REDUCED

Oct 12, 2017  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 elementary carbon ...

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Cost Effectiveness Analysis of HYL and Midrex DRI ...

Cost Effectiveness Analysis of HYL and drex DRI Te chnologies for the Iron and Steel-king Industry Pa ge 3 Executive SummaryExecutive Summary Climate change and reducing carbon dioxide (CO 2) emissions is an immense challenge for this world. Lowering CO 2 emissions is essential to the goal of limiting the global average temperature increase to

More

US20080087135A1 - Microwave heating method and apparatus ...

A method and apparatus for reducing iron oxides using microwave heating in a furnace chamber which is sealed against the entrance of air reduces the energy required and produces a low temperature reduction and allows the recovery of combustible synthetic gas as a byproduct of the process. Avoidance of the reduction of sulfur, phorphorus and silica is also insured, as is the need to reduce

More

Decarbonization of the Iron and Steel Industry with Direct ...

Mass and energy flow model based on an open-source software (Python) has been developed in this work to explore the feasibility of using hydrogen direct reduction of iron ore (HDRI) coupled with ...

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What is DIRECTLY-REDUCED IRON? What does ... - YouTube

Oct 12, 2017  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 elementary carbon ...

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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.

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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) to iron by a reducing gas or elemental carbon produced from natural gas or coal. Many ores are suitable for direct reduction.

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DRI production International Iron Metallics Association

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

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CO 2 abatement in the iron and steel industry

iron making, where the iron ore is reduced by a carbon-based agent to produce hot metal or direct reduced iron (DRI), a solid product; steel making, where the hot metal and DRI are converted into liquid steel; manufacturing steel products, where the steel is cast, reheated, rolled and finished. This is outside

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Direct-reduced iron - URM-Company

The metal product of the above process is direct-reduced iron (DRI) that is not contaminated with carbon, due to lack of direct interaction between ore and carbon, as well as with various impurities that could potentially come from coke. This product contains about 1 % carbon and 90 % Fe.

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Microwave Carbothermic Reduction of Oolitic Hematite ...

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Comparative Research on the Coal-based Direct Reduction of ...

Request PDF On Jan 1, 2012, Lingyun Yi and others published Comparative Research on the Coal-based Direct Reduction of Iron Ore Pellets by Microwave Heating and Conventional Heating

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Iron and Steel Emissions Global Greenhouse Warming

Carbon is the most cost-effective alloying material for iron, but various other alloying elements are used such as manganese and tungsten. iron and steel emissions • The iron and steel industry accounts for about 19% of final energy use and about a quarter of direct CO2 emissions from the industry sector.

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Preliminary investigation into direct reduction of iron in ...

There has been an increasing interest in reduction of iron ore by hydrogen. This study deals with the reduction of haematite in a microwave assisted non-thermal hydrogen plasma. The plasma is composed of excited hydrogen molecules, hydrogen atoms, and

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Fundamental Studies Related to Gaseous Reduction of Iron

Experiments were undertaken to investigate the selective reduction of iron oxide in zinc ferrite. It was observed that gaseous reducti on by hydrogen at temperatures up to 873 K is a potential method for reduction of iron oxide to metallic iron, while the zinc oxide remains in the product and losses of metallic zinc are negligible.

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Comparative Research on the Coal-based Direct Reduction of ...

Comparative Research on the Coal-based Direct Reduction of Iron Ore Pellets by Microwave Heating and Conventional Heating

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Fundamental Studies Related to Gaseous Reduction of Iron

Experiments were undertaken to investigate the selective reduction of iron oxide in zinc ferrite. It was observed that gaseous reducti on by hydrogen at temperatures up to 873 K is a potential method for reduction of iron oxide to metallic iron, while the zinc oxide remains in the product and losses of metallic zinc are negligible.

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Direct Reduced Iron (DRI) Production Plant

Direct Reduced Iron (DRI) Production Plant NIPPON STEEL ENGINEERING CO., LTD. Basic Concept or Summary S-16 u A direct reduced iron (DRI) production plant is a shaft reduction furnace to produce DRI with large metal iron content by directly reducing iron ore (or iron ore pellets) with reducing gases.

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2-0 Process Development - Ironmaking

Iron from scrap, direct reduced iron, and smelter metal will make up the remainder of the required iron units. Coal and natural gas injection will increase, possibly supplying up to 50% of total furnace carbon reductant requirements. Specific productivity in the blast furnace will increase.

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A LABORATORY STUDY OF THE REDUCTION OF IRON

Keywords: Reduction, iron oxide, hydrogen, mechanisms, kinetics, thermobalance. Abstract To reduce the emission of greenhouse gases by the steel industry, particularly for ironmaking, the production of DRI (Direct Reduced Iron) using hydrogen as the reducing gas instead of carbon

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Direct reduction of iron (DRI) – ‘Sponge iron’

Direct reduction of iron (DRI) – ‘Sponge iron’, another method of producing iron: All steelmaking processes require the input of iron bearing materials as process feedstock. For making steel in a basic oxygen furnace, the iron bearing feed materials are usually blast furnace hot metal and steel scrap.

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Method and apparatus for coproduction of pig iron and high ...

Jul 01, 2014  Method and apparatus for coproduction of pig iron and high quality syngas ... During the microwave heating, iron ore is quickly partially reduced into direct reduced iron (DRI). After DRI is formed, the feed material becomes a poor microwave absorber due to the formation of networked metallic iron. ... At elevated temperatures in the carbon ...

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New Updates on Steelmaking Plans - GreenEnvironmentNews

Direct reduced iron fines supplied by Ispat have been characterized using multiple types of lab analysis. This material is very fine and high in carbon compared to the materials tested previously. These fines should be suitable for the injection studies, though the high carbon

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Preliminary investigation into direct reduction of iron in ...

There has been an increasing interest in reduction of iron ore by hydrogen. This study deals with the reduction of haematite in a microwave assisted non-thermal hydrogen plasma. The plasma is composed of excited hydrogen molecules, hydrogen atoms, and

More

Iron and Steel Emissions Global Greenhouse Warming

Carbon is the most cost-effective alloying material for iron, but various other alloying elements are used such as manganese and tungsten. iron and steel emissions • The iron and steel industry accounts for about 19% of final energy use and about a quarter of direct CO2 emissions from the industry sector.

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Sintering - Wikipedia

Microwave sintering. In microwave sintering, heat is sometimes generated internally within the material, rather than via surface radiative heat transfer from an external heat source. Some materials fail to couple and others exhibit run-away behavior, so it is restricted in usefulness.

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A new process to produce iron directly from fine ore and coal

A new process to produce iron directly from fine ore and coal ... Effect of Carbon Content in Direct Reduction Process of Limonite Iron Oxide to Produce Pig Iron Substitute for Thin Wall Ductile ...

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Steelmaking - Wikipedia

Primary steelmaking involves converting liquid iron from a blast furnace and steel scrap into steel via basic oxygen steelmaking, or melting scrap steel or direct reduced iron (DRI) in an electric arc furnace. Secondary steelmaking involves refining of the crude steel before casting and the various operations are normally carried out in ladles.

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Direct reduction of iron oxides based on steam reforming ...

A hydrogen yield of 87.4% with a carbon conversion of 91.8% was obtained at T = 500 °C and S/ C = 6.1. The hydrogen content reached about 94.6 vol% after simple purification by removing CO 2. Furthermore, direct reduction of iron oxides at different reduction temperatures was investigated using on-line rich-hydrogen reducing gases.

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