dri direct reduced iron using iron ore fines

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 carbon produced from natural gas or coal. Its main use is as raw material feedstock for electric furnaces in mini mills, where DRI can be used as a scrap substitute.

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 85-90%. This explains why the production of direct-reduced iron is mainly concentrated in countries with large reserves of oil (oilwell gas), natural gas and iron ore ...

Chapter 11 Direct Reduced Iron (DRI) 87 11.2 Cold-Moulded DRI Cold-moulded DRI is manufactured in the form of pellets (spheres) about 1 cm in diameter. These are produced from iron ore (principally iron oxide) which is crushed, partially freed from foreign material other than iron oxide and then

Descriptions have included re-oxidised iron fines, iron fines (blend), iron ore pellet chips, oxide fines, pond fines, sludge fines, remets, clarifier slush and dust, spent iron fines and lodos. Other similar cargoes include DRI in the description, but are offered on the basis that they are not DRI (C) and therefore do not need to be carried in ...

Fuelled by the scenario of a shortage of scrap iron and the increase in steel mini mills as alternatives to integrated steel plants, the production of direct reduced iron (DRI) in the form of briquettes (hot briquetted iron - HBI) is currently undergoing a major expansion.

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 ...

The MIDREX process is a shaft-type direct reduction process where iron ore pellets, lump iron ore or a combination are reduced in a Vertical Shaft ... Fine ore is pre-reduced to DRI in a CFB (circulating fluidised bed) reactor (Fig. 12.14). Char and hot reducing gas are produced as by-products.

DRI A:Direct Reduced Iron (A) Briquettes, Hot-Moulded This form of iron ore is also marketed and referred to as HBI (Hot Briquetted Iron).Material produced by removing oxygen from iron ore by reaction with hydrogen and carbon monoxide at a high temperature. A premium quality, high density material that contains the highest levels of Fe content.

Aug 01, 2019· Pilot plant slated for a H2-based process to make DRI from iron-ore fines By Gerald Ondrey | August 1, 2019 The use of direct reduced iron (DRI; sponge iron) and hot briquetted iron (HBI) is expected to continue to grow due to the need to reduce greenhouse gas emissions and the growing number of electric arc furnaces (EAFs) in service worldwide.

Jun 02, 2019· dri sponge iron price in Iran Similar to all products on the upstream of steel Also other ironware is up to date and it can fluctuate at any moment. This fluctuation is usually influenced by the foreign market, or for reasons such as closure or the so-called "shut down" of …

May 08, 2013· In the meantime steel making in EAFs can benefit significantly from optimizing practices, increasing further the use of chemical energy and correctly using the direct reduced iron (DRI). Historically use of DRI in EAF was for the production of high quality low residuals steels with the anticipated expense of specific energy (kWh/ton), tap to ...

Nov 27, 2014· Abstract. In the search for a pure, available iron source, steelmakers are focusing their attention on Directly Reduced Iron (DRI). This material is produced by the reaction of a low gangue iron ore with a hydrocarbonaceous substance.

Jun 11, 2014· Dear All, We have a Midrex Sponge Iron plant producing cold DRI. Since some days we are noticing fire in DRI dust. The temperature stays normal at the furnace discharge but when the product gets transferred after moving through a belt for around 200 meters to another belt the DRI dust catches fire. It is happening again and again. We have started using some new pellets since some days but …

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.

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.

Direct Reduced Iron Direct reduced iron (DRI) is also known as sponge iron. It is produced by the reduction of iron ore (in the form of lumps or pellets) by either non-coking coal or a reducing gas produced by reforming of natural gas.

Direct reduced iron – Wikipedia, the free encyclopedia. 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 … of sintering or pelletization plants, coke ovens, blast …

The latest technology in the DRI (Sponge Iron) making is utilizing the Iron Ore Fines directly to produce the Sponge Iron( DRI) and subsequently producing the CBI cold brquetted Iron, which has the multiple benefits, like: 1) High Degree of Metallization. 2) Low Processing cost over the Rotary Kiln Technology. 3) Low Invetsment. 4) Low Maintenance

Iron Fines that may Contain DRI (C) Fines February 6, 2013 by Officer of the Watch Leave a Comment The process of manufacturing Direct Reduced Iron (DRI) from iron ore and the subsequent hot briquetting procedures generate unwanted by-products in the form of …

3 Direct Reduced Iron ... technical description of a specific type of refined iron ore. These products must be grouped under the genus of direct ... exclude the abbreviation “DRI”, such as “Orinoco iron remet fines” and “Orinoco remet fines in bulk”. These should all be treated as DRI, BC 015.

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 ...

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 ore …

Regardless of the steelmaking route, there is a form of direct reduced iron (DRI) for every application. DRI is a premium ore-based metallic (OBM) raw material made by removing chemically-bound oxygen from iron oxide pellets and lump ores without melting.

The key technology is the four-stage, bubbling fluidized-bed-reactor system, in which fine iron ore is reduced to DRI fines in a countercurrent flow with a reducing gas generated by coal gasification.

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.

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.

Alibaba.com offers 47 dri direct reduced iron products. About 61% of these are other iron, 10% are iron ore, and 8% are cement making machinery. A wide variety of dri direct reduced iron options are available to you, such as free samples. There are 32 dri direct reduced iron …

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.

The DRI process can use gas, uses fine ores and involves a lower capital investment. The downside is that a relatively high grade of iron ore is required as the process retains the impurities and even some unconverted iron oxide. Western Australia is an obvious place for DRI production.

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.

Cost Effectiveness Analysis of HYL and Midrex DRI Technologies for the Iron and Steel-Making Industry By ... agglomerate fine iron ore dust in conjunction with other material (typically limestone) to form a product ... This forms the direct reduced iron (DRI) which is typically composed of 90 to 94% iron. After the DRI exits

of industrial plants for the hot briquetting of direct reduced iron went into operation. Ad-ditional hot briquetting plants for already established but also for new direct reduction processes are under construction or in different stages of planning. The paper describes the characteristics of HBI and its current industrial application for