animation fo the proces direct reduced iron

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Mar 16 2013 · In the direct reduction process the solid metallic iron Fe is obtained directly from solid iron ore without subjecting the ore or the metal to fusion Direct reduction can be defined as reduction in the solid state at O2 potentials which allow reduction of iron oxides but not of other oxides MnO and SiO2 etc to the corresponding elements

Direct reduction DR is defined as any process in which metallic iron is produced by the reduction of iron ore at temperatures below the iron melting point The product of a DR process is called direct reduced iron DRI The major consumers of DRI are the smaller steel mills which use DRI to dilute the residual elements present in the steel scrap

Apr 22 2017 · With the successful production of direct reduced iron with the gasbased HYL direct reduction process studies were begun for the design of the first commercial plant with a daily capacity of 230 tons of DRI The first industrial scale direct reduction plant

Apr 09 2017 · 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 The principle of the reduction process using reducing gas is shown in Fig 1

The Circofer process is a coalbased direct reduction process developed by Outotec GmbH Fine ore is prereduced to DRI in a CFB circulating fluidised bed reactor Fig 1214 Char and hot reducing gas are produced as byproducts

State of direct reduction and reduction smelting processes J Min Met 38 3 ‡ 4 B 2002 125 Table 1 Total world’s DRI output in 1998 1999 2000 and 2001 in 2 Figure 2 Total world’s DRI output by processes in 2001 in 2 3 Direct Reduction Processes Direct reduction is defined as a process of producing solid iron product

During the last four decades a new route of ironmaking has rapidly developed for direct reduction DR of iron ore to metallic iron by using noncoking coalnatural gas This product is known as direct reduced iron DRI or sponge iron Processes that produce iron by reduction of iron ore in solid state

Midrex NG is the most widelyused technology for the production of all forms of direct reduced iron DRI products because they are known for their reliability and hours of continuous operation Each year MIDREX Plants produce more than 60 of the entire world’s DRI and more than 80 of the DRI produced by all shaft furnace technologies

Apr 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

Mar 16 2013 · Fig 2 Principle of direct reduction process Gas based process In the gas based reduction processes a vertical shaft kiln is used in which iron ore is fed into the top of the kiln and finished sponge iron is drawn off from the bottom after cooling it so as to prevent its reoxidation

Direct reduction DR is defined as any process in which metallic iron is produced by the reduction of iron ore at temperatures below the iron melting point The product of a DR process is called direct reduced iron DRI The major consumers of DRI are the smaller steel mills which use DRI to dilute the residual elements present in the steel

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 Most gasbased direct reduction plants are part of integrated steel minimills located adjacent to the electric arc furnace EAF

DRI is also known as sponge iron it is a solidstate direct reduction process Fig 26 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

Description Application Shipment Storage Risk factors Directreduced 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 reducing gas is a mixture majority of hydrogen H2 and carbon monoxide CO which acts as reducing agent

This product is known as direct reduced iron DRI or sponge iron Processes that produce iron by reduction of iron ore in solid state below the melting point are generally classified as DR

State of direct reduction and reduction smelting processes J Min Met 38 3 ‡ 4 B 2002 125 Table 1 Total world’s DRI output in 1998 1999 2000 and 2001 in 2 Figure 2 Total world’s DRI output by processes in 2001 in 2 3 Direct Reduction Processes Direct reduction is defined as a process of producing solid iron product

Direct Reduced Iron DRI Production Plant NIPPON STEEL ENGINEERING CO LTD Basic Concept or Summary S16 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

Overview of direct reduction process types Direct reduction furnace types Direct reduction processes for iron Illustrations of the principal processes are shown below The Midrex and Energiron gasbased processes use predominantly iron ore pellets as feedstock but sometimes with inclusion of lump ore in the furnace charge

NIPPON STEEL ENGINEERING CO LTD provides new iron source technology that enables the achievement of productivity improvements operational cost reductions CO 2 emissions reductions and capital investment reductions through the optimal combination of Tenova HYL and Danielis natural gasbased directreduced iron technology ENERGIRON with our blast furnace equipment technology

Midrex NG is the most widelyused technology for the production of all forms of direct reduced iron DRI products because they are known for their reliability and hours of continuous operation Each year MIDREX Plants produce more than 60 of the entire world’s DRI and more than 80 of the DRI produced by all shaft furnace technologies

Smelting Reduction Figure 2 The smelt reduction vessel SRV is the core technology component of the Hismelt process Source RioTinto While years of ironmaking technology innovations have optimized blast furnace productivity two alternative processessmelting reduction and direct iron reduction are growing in adoption The alternative processes are touted as more environmentally

NIPPON STEEL ENGINEERING CO LTD provides new iron source technology that enables the achievement of productivity improvements operational cost reductions CO 2 emissions reductions and capital investment reductions through the optimal combination of Tenova HYL and Danielis natural gasbased directreduced iron technology ENERGIRON with our blast furnace equipment technology

Apr 22 2017 · HYL process for direct reduction of iron ore was the fruition of research efforts begun by Hojalata y SA 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 and several runs were undertaken

All effective methods of direct reduction actually use the same process rich iron ore fine concentrate or pellets is reduced by a special gas mixture up to the iron content of 8590 This explains why the production of directreduced iron is mainly concentrated in countries with large reserves of oil oilwell gas natural gas and iron ore

The CoalOreDirectIronReduction Codir process combines features of the Waelz Kiln and the Krupp–Renn process The Krupp–Renn is an iron ore reduction process designed for lowgrade ores that at one time had over 40 commercial installations but high energy costs and availability of highergrade ores led to the shutdown of all operations

Jan 18 2018 · This technology improves the process of direct reduction for the production of direct reduced iron DRI The process is a gas based direct reduction process which has been developed by a team of specialists having experience in different areas of the direct reduction process to ensure that all the flows of different processes are taken care in

Regardless of the steelmaking route there is a form of direct reduced iron DRI for every application DRI is a premium orebased metallic OBM raw material made by removing chemicallybound oxygen from iron oxide pellets and lump ores without melting

Description Application Shipment Storage Risk factors Directreduced 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 reducing gas is a mixture majority of hydrogen H2 and carbon monoxide CO which acts as reducing agent

The term direct reduced iron or DRI has a generic meaning which covers a number of products with a variety of properties and hazards There has been a disturbing increase in the number of potential life threatening incidents involving the carriage of direct reduced iron DRI

4 Direct Reduced Iron Understanding the different direct reduced iron products Gard News 178 MayJuly 2005 The term direct reduced iron or DRI has a generic meaning which covers a number of products with a variety of properties and hazards There has

Direct Reduced Iron DRI The world market for steel is expected to continue to increase The volume of steel produced by the now oldfashioned blast furnace process is already very low and will continue to decline relative to the volume of steel produced by the electric arc process for which DRI is the raw material The world production

The schematic represents the HBI briquetting process Direct Reduced Iron is discharged hot from the reduction furnace and screwfed into the nip between two counter rotating rollers Pockets in the synchronously rotating rollers form the briquettes This process occurs at high temperatures typically approx 700 °C and high pressing forces

Nov 03 2016 · The direct reduction process HBI is the product of reducing iron ore with natural gas This is called the direct reduction process and is an environmentallyfriendly production process a DRI plant uses natural gas which is more environmentally sound than coke The reduction process takes place in the reduction tower

The MIDREX Direct Reduction Process fueled by natural gas paired with an electric arc furnace EAF has the lowest CO² emissions of any commercially proven steelmaking route using virgin iron ore at 11 – 12 kg CO² kg steel

DIRECT REDUCTION PROCESS By Rob Cheeley – Senior Sales Engineer Midrex Direct Reduction Corporation INTRODUCTION The production of direct reduced iron DRI a basic raw material for making steel is concentrated in a few countries in the Middle East and Latin America One primary reason is that natural gas the main fuel source for most DRI