Midrex Process for Direct Reduction of Iron Ore . Midrex Process for Direct Reduction of Iron Ore. Midrex is an ironmaking process, developed for the production of direct reduced iron (DRI). It is a gasbased shaft furnace process is a solid state reduction process which reduces iron ore pellets or lump ore into DRI without their melting using ...
Get PriceDirect 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.
Get Pricebased shaft furnace process. The reduction of iron ores by hydrogen is a gassolid reaction which occurs in two or three stages. For temperatures higher than 570°C, hematite (Fe2O3) is first transformed into magnetite (Fe3O4), then into wustite (Fe1yO), and finally into metallic iron …
Get PriceMidrex NG™ is the configuration of the Midrex ® process using natural gas, considered as the cleanest ironmaking fuel. Through use of the patented Midrex ® Reformer, this process cost effectively makes reducing gas for the iron ore reduction reactions that take place in the Midrex ® shaft furnace.
Get Pricethe emission of carbon dioxide from the blast furnace process since natural gas is substituted for the coal used in the process. Therefore, a study was conducted to understand the effect of using natural gas has on reducing carbon dioxide emissions. Manufacturing of prereduced ore The metallization degree of conventional direct reduced iron is
Get PriceAug 01, 1995· FIELD OF THE INVENTION. The present invention relates to a method and apparatus for the production of iron carbide in a shaft furnace, and more particularly to a method of using carbon containing reducing gas as the process gas in a furnace for …
Get PriceFIELD OF THE INVENTION. The present invention relates to a method and apparatus for the production of iron carbide in a shaft furnace, and more particularly to a method of using carbon containing reducing gas as the process gas in a furnace for reaction with particulate metal oxide material.
Get PriceT1 Evaluation of raw materials by simulation of direct reduction in the shaft furnace. AU Morrison,A. L. AU Wright,J. K. PY 1986. Y1 1986. N2 A description is given of a laboratory reduction apparatus which uses microcomputer control to achieve simulation of the gas and temperature profiles which occur in direct reduction shaft ...
Get PriceThe heart of the MIDREX ® Process is the MIDREX ® Shaft Furnace. This key component of the MIDREX ® Direct Reduction Process is the most flexible and versatile reduction vessel for DRI producers.. Operation of the MIDREX ® Shaft Furnace is uncomplicated and straightforward:. Iron oxide pellets and/or lump are fed to the top of furnace and flow downward
Get PriceThe Extraction of Iron Chemwiki. Nov 29, 2015 ... Extracting iron from iron ore using a Blast Furnace ... Coke is cheap and provides both the reducing agent for the reaction and also the heat source. .... utensils, kitchen sinks, industrial equipment for food and drink processing.
Get PriceCoke constitutes the major portion of ironmaking cost and its production causes the severe environmental concerns. So lower energy consumption, lower CO2 emission and waste recycling are driving the iron and steel industry to develop alternative, or cokefree, ironmaking process. Midrex and HYL Energiron are the leading technologies in shaft furnace direct reduction, and they account for about ...
Get PriceThe MIDREX® Direct Reduction Process employs a shaft furnace to convert iron ore into DRI using natural gas or syngas from coal. The MIDREX® Process is energy efficient and flexible, producing 60 percent of the world’s DRI annually. Midrex offers three rotary hearth furnacebased technologies: FASTMET® provides for
Get PriceMay 24, 2012· A process for reducing iron oxide to metallic iron using coke oven gas (COG), including: a direct reduction shaft furnace for providing off gas; a COG source for injecting COG into a reducing gas stream including at least a portion of the off gas; and the direct reduction shaft furnace reducing iron oxide to metallic iron using the reducing gas stream and injected COG.
Get PriceThe MIDREX process is a shafttype direct reduction process where iron ore pellets, lump iron ore or a combination are reduced in a Vertical Shaft (reduction furnace) to metallic iron by means of a reduction gas (see Figure ) [9].
Get PriceDirect reduction of iron removes oxygen from iron ore or other ironbearing materials in the solid state— without melting, as is done in a blast furnace. The reducing agents are carbon monoxide and hydrogen, coming from reformed natural gas, syngas or coal. Iron …
Get PriceDetailed Modeling of the Direct Reduction of Iron Ore in a Shaft Furnace Hamzeh Hamadeh 1,2, Olivier Mirgaux 1,2 and Fabrice Patisson 1,2,* 1 Institut Jean Lamour, CNRS, Université de Lorraine, ... This cooling gas exits the furnace, through the wall in the upper part of the conical section. The temperatures of the solid and gas are different ...
Get PriceDirect reduction processes are an alternative to the traditional blast furnace because of the use of H2 in the reducing gases which generate less CO2. There are two main technologies for direct reduction of iron, Midrex and Energiron (or Hyl) which together are responsible for 80% of the production of direct reduced iron in the world.
Get PriceState of direct reduction and reduction smelting processes J. Min. Met. 38 (3 ‡ 4) B (2002) 129 Figure 3. Schematic Review of MIDREX PROCESS [2] ore or iron oxide pellet solids in the bed, Figure 3. The reducing gas (from 1020% CO and 8090% H2) is produced from natural gas using …
Get PriceA 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. While the produced DRI is mainly used as the raw material of electric steelmaking, it is also used as
Get PriceDec 01, 2010· Abstract: Methods and systems for the production of direct reduced iron, including: removing a top gas from a direct reduction furnace; carbon monoxide shifting the top gas using a carbon monoxide shift reactor to form a carbon monoxide shifted top gas having a reduced carbon monoxide content; adding one of a coal gas, a synthesis gas, and an ...
Get PriceAug 21, 2015· Metallic iron used in steel industries is mostly obtained from a direct reduction process. The focus of this study is to simulate the furnace of the MIDREX technology. MIDREX technology which is the most important gasbased direct reduced iron (DRI) process in the world, includes reduction, transition and cooling zones.
Get Price2 emissions from steel industry (ULCOS project), the reduction of iron ore by pure hydrogen in a direct reduction shaft furnace was investigated. After experimental and modelling studies, a 2D, axisymmetrical steadystate model called REDUCTOR was developed to simulate a countercurrent moving bed reactor
Get Pricei) Direct Reduced Iron: Production ... a new route of ironmaking has rapidly developed for direct reduction (DR) of iron ore to metallic iron by using noncoking coal/natural gas. ... Shaft furnace ...
Get PriceIron processing Iron processing Iron making: The primary objective of iron making is to release iron from chemical combination with oxygen, and, since the blast furnace is much the most efficient process, it receives the most attention here. Alternative methods known as direct reduction are used in over a score of countries, but less than 5 percent of iron is made this way.
Get PriceThe hot reducing gas is utilized as the reductant in a counterflow shaft reduction furnace and the spent reducing gas is recycled as tempering gas for the gas from the hot gasifier. The apparatus includes a gasifier, counterflow shaft gas reactor, a shaft type direct reduction furnace and associated equipment.
Get PriceApr 22, 2017· HYL process for direct reduction of iron ore was the fruition of research efforts begun by Hojalata y , (later known as Hylsa), at the beginning of the 1950s. After the initial evaluation of the concept, it was decided to install a process using a tunnel furnace …
Get PriceDirect reduction of iron is the removal of oxygen from iron ore or other iron bearing materials in the solid state, without melting, as in the blast furnace. The reducing agents are carbon monoxide and hydrogen, coming from reformed natural gas, syngas or coal. Iron …
Get PriceCost Effectiveness Analysis of HYL and drex DRI Te chnologies for the Iron and Steelking Industry Pa ge | 4 also included in each individual section. The results show that not only does the HYL/EAF combination yields the most cost savings over the business as usual scenario, but it also results in the most reduction of CO 2.
Get PriceApr 09, 2017· Midrex Process for Direct Reduction of Iron Ore. Midrex is an ironmaking process, developed for the production of direct reduced iron (DRI). It is a gasbased shaft furnace process is a solid state reduction process which reduces iron ore pellets or lump ore into DRI without their melting using reducing gas generally formed from natural gas.
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