Apparatus For The Direct Reduction Of Iron In A Shaft Furnace Using Gas From

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Process through Multiscale Process Modeling - mdpi.com

Direct reduction (DR) in a shaft furnace followed by electric arc steelmaking thus results in 40 to 60% lower CO2 emissions compared with the reference route [2]. Direct reduction converts solid iron ore pellets into so-called direct reduced iron (DRI), using a mixture of CO and H2 produced by reforming natural gas. Due to

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 Mexico.

EIA: India's steel industry dominated by electric-based ...

Direct reduction of iron removes oxygen from iron ore or other iron-bearing materials in the solid state—i.e. 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 …

Midrex© Process | Industrial Efficiency Technology & Measures

Midrex is direct reduction process using a shaft-reactor and is developed by Midrex/Kobe Steel. Iron ore pellets, lump iron ore or a combination of pellets and ore are reduced in a vertical shaft or reduction furnace to metallic iron by means of a reduction gas. The reducing gas is produced from a mixture of natural gas and recycled gas from the reduction furnace.

Reduction in swelling of iron caused by irradiation ...

Apparatus for the direct reduction of iron and production of fuel gas in which a fossil fuel is gasified to produce a hot gas which is tempered with a carbon dioxide rich gas. The mixture is reacted with carbon to upgrade it in reducing potential and is desulfurized by reaction with lime in a first shaft furnace to form a hot reducing gas.

Shaft Furnace Direct Reduction Technology - Midrex and ...

Coke 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 coke-free, ironmaking process. Midrex and HYL Energiron are the leading technologies in shaft furnace direct reduction, and they account for about ...

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 | 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.

Charles W. Sanzenbacher Inventions, Patents and Patent ...

Abstract: A method and apparatus for the direct reduction of iron in a shaft furnace using gas from the gasification of solid fossil fuel, such as coal, in which the fuel gas is desulfurized and upgraded in the shaft furnace and direct reduction of iron oxide is carried out in the same furnace. Clean export fuel can be produced by this method ...

MIDREX Processes -

The experience of operating the shaft furnace with a diameter of 6.5m has led to the construction of a larger shaft furnace at Saudi Iron & Steel Company in Hadeed, Saudi Arabia in 2007. This shaft furnace has a diameter of 7.15m and an increased production capacity of 1.8 million tonnes/year (Fig. 7). Another shaft furnace, SUPER MEGAMOD,

System and method of reducing iron oxide to metallic iron ...

FIELD: chemistry. SUBSTANCE: system comprises a direct reduction shaft furnace in which iron oxide is reduced to metallic iron using a stream of reducing gas and an off gas is provided, a coke oven gas (COG) source for feeding COG into the stream of reducing gas containing at least a portion of off gas, which is used in said direct reduction shaft furnace, and a pipe for transferring a portion ...

Method of direct reduction of iron ores - Thyssen ...

Apr 06, 1976· In an apparatus as described for the reduction of iron ore in a shaft furnace 1 and using regeneratively driven reformer 2,43,000 standard m 3 /hr of reduction gas is produced and continuously supplied to the furnace 1. The temperature of the reduction gas in the gas inlet to the furnace is to be held to a maximum of 950°C since above this ...

Donald Beggs Inventions, Patents and Patent Applications ...

The 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.

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. Reduced iron derives its name from the chemical change that iron ore undergoes when it is heated in a furnace at a high ...

Laboratory Simulation of the Shaft Furnace Reduction of ...

A description is presented of the results of reduction experiments using a laboratory reduction apparatus in which simulation of the gas and temperature profiles which occur in direct reduction shaft furnaces is achieved using microcomputer control. The apparatus allows continously changing reduction conditions to be impressed on lump or pellet samples to simulate the environment...

Direct Reduced Iron - Platts

Direct Reduced Iron ... as a Rotating Hearth Furnace (RHF). In the RHF, iron ore fines are mixed with thermal ... It burns coal to create a reduction gas in a rotary shaft. None of the

MIDREX® Shaft Furnace | MIDREX

The 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 straight-forward:. Iron oxide pellets and/or lump are fed to the top of furnace and flow downward

A ction rules of H and CO in gas­ based direct reduction ...

and CO in gas­ based direct reduction of iron ore pellets ... Kinetic of pellets reduction in shaft furnace by two different reducing gases was ... reduced in a thermo gravimetric apparatus at ...

Direct Reduction Process (MIDREX) | Middle East Steel Industry

Dec 01, 2008· The Midrex ™ Direct Reduction process is based upon a low pressure, moving bed shaft furnace where the reducing gas moves counter-current to the lump iron oxide ore or iron oxide pellet solids in the bed. The reducing gas (from 10-20% CO and 80-90% H2) isproduced fromnatural gasusing Midrex's CO2 reforming process and their proprietary…

Evaluation of raw materials by simulation of direct ...

T1 - 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 ...

Direct Reduced Iron and its Production Processes – IspatGuru

Mar 16, 2013· In the gas based plant the reactor, the reduction reaction takes place is a shaft furnace. The shaft furnace works on counter current principle where the iron ore feed material moves downward in the furnace by gravity and gets reduced by the up flowing reducing gases. The pressure and temperature in shaft furnace in HYL process is 5-6 bars and ...

Direct-Reduced Iron - an overview | ScienceDirect Topics

SIS in steel production: Production of direct reduced iron involves reduction of iron ores in pallet or lump form in the presence of reducing gas comprising CO and H 2. SIS plays an important role in this process, which is a chemical process rather than a normal iron extraction process.

Method and apparatus for controlling temperature ...

Aug 05, 2003· A method and apparatus for increasing hydrocarbons to a direct reduction shaft furnace while controlling the temperature uniformity of the center portion of the iron burden wherein the hydrocarbon gases used in direct reduction may be preheated, which increases the temperature of the hydrocarbon gases, and therefore increases the resultant temperature of the upflowing gases as it …

Midrex Direct Reduction / Ironmaking / Our Activities ...

Midrex 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.

Intelligent sensor for predicting the quality of reduced ...

Direct Reduction Iron (DRI) furnaces are used to produce iron from iron ore oxides using natural gas. The furnace takes the iron ore in the form of spherical pellets and a mixture of hydrogen and carbon monoxide and produces reduced iron. Accurate estimation of the quality of the reduced iron is essential for proper control and efficient operation of the DRI furnaces.

Shaft Furnace - an overview | ScienceDirect Topics

Shaft furnace typical of that used by MIDREX and HYL for gas-based production of DRI. Hot reducing gases from reformer may be trimmed by additions of oxygen and/or natural gas. Reducing gas enters shaft furnace around the periphery at the bottom of the reduction zone through a bustle pipe that distributes the gases evenly.

US5618032A - Shaft furnace for production of iron carbide ...

From the foregoing, it is readily apparent that we have invented an improved apparatus for iron carbide production in a direct reduction shaft furnace, and a product containing a high percentage of iron carbide. By using this apparatus, iron carbide can be produced faster and more economically than heretofore has been possible.

Iron and Steelmaking - vsb.cz

Iron and Steelmaking (Study Support) Prof. Ing. Jiří Bažan, CSc. Doc. Ing. Ján Kret, CSc. ... Counter flow of a chargé and gas in a blast furnace Heat exchange in a blast furnace ... Directly reduced iron is a product of iron (steel) direct reduction from ores in the solid state ...

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 …

Direct Reduced Iron (DRI) Production Plant - ECCJ

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. While the produced DRI is mainly used as the raw material of electric steelmaking, it is also used as

METALLURGICAL PROCESS IN ANCIENT SHAFT FURNACE ...

shows that the reduction of iron from fayalite in an ancient shaft furnace is very unlikely. The analysis of the reduction of iron oxides by means of carbon monoxide in an ancient furnace may be based on the so-called Fe-O-C equilibrium system. Figure 3 presents a diagram showing the reduction.