direct reduction of iron ore using natural gas

Direct Reduction Process - an overview | ScienceDirect Topics

Gas-based direct reduction processes are particularly suitable for installation in those areas where natural gas is available in abundance and at economical prices. 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 (reduction furnace) to metallic iron by means of a reduction gas (see Figure 1.1.39 ...

REDUCTION OF IRON ORES USING NON-COKING COAL AS THE REDUCTION …

Non-coking coal as reduction agent for direct reduction processes Commercially employed processes for removing oxygen from iron ore require solid carbon or the gas components CO and H2 as reduction agent; the latter can also naturally be won bybon. It is

Green Steel: Coupling Steel with Methanol Production - …

In three additional scenarios, the authors compare their findings to the manufacture of steel by employing alternative iron ore reduction processes, namely, a natural gas-based "direct reduced iron" (DRI) process and a similar process based on hydrogen gas.

Hydrogen to Replace Coking Coal in the Reduction of Iron …

Iron ore reduction using natural gas such as Voestalpine's HBI plant emits significantly lower carbon emissions than traditional direct-reduction blast furnaces using coking coal, but to be ...

A LABORATORY STUDY OF THE REDUCTION OF IRON OXIDES BY …

the production of DRI (Direct Reduced Iron) using hydrogen as the reducing gas instead of carbon monoxide is being considered. In this context, the reduction of pure hematite by hydrogen was studied at the laboratory scale, varying the experimental conditions

Direct reduction of oxidized iron ore pellets using biomass …

Direct reduction of iron ore pellets within a biomass-derived syngas atmosphere was investigated using a one-dimensional model. A kinetics analysis showed that the reduction process followed the chemical interfacial reaction mechanism. The activation energy

Can hydrogen be used instead of carbon in the smelting of …

Yes. Smelt reduction for iron and steel sector The iron and steel sector is the second-largest industrial user of energy, consuming 616 Mtoe in 2007 and is also the largest industrial source of CO2 emissions. The five most important producers – Ch...

Process through Multiscale Process Modeling

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 independence from coke and coal imports, sizeable units to meet demand, reduced investment costs,

IEA Greenhouse Gas R&D Programme - Potential for CO2 emissions reduction in MIDREX direct reduction …

Decrease in natural gas consumption with MIDREX Process development DIRECT FROM MIDREX 2 nd QUARTER 2004 10 Energy usage in direct reduction shaft furnaces has decreased by about 30% over the past forty years. This has occurred gradually over the

(PDF) i) Direct Reduced Iron: Production

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 coal/natural gas. This product is known as ...

Direct Reduced Iron and its Production Processes – IspatGuru

Direct reduced iron (DRI) is the product which is produced by the direct reduction of iron ore or other iron bearing materials in the solid state by using non-coking coal or natural gas. Processes which produce DRI by reduction of iron ore below the melting point of the iron are normally known as the direct reduction (DR) processes.

Ironmaking 101 – From Ore to Iron with Smelting and …

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 ...

HYL Process for Direct Reduction of Iron Ore – IspatGuru

HYL process for direct reduction of iron ore was the fruition of research efforts begun by Hojalata y L.mina, S.A. (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

STATE OF THE DIRECT REDUCTION AND REDUCTION SMELTING …

State 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 10-20% CO and 80-90% H2) is

Application of Different Models for the Prediction of the Kinetics of Direct Reduction of Natural Iron …

natural iron oxide conversion and thereby the reduction kinetics. Keywords Iron Ore, Reduction Kinetics, Solid Conversion, Reduction Rate, DR Estimation Models 1. Introduction In the direct reduction of iron oxide with gas as the reducing agent, a reduction

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

ArcelorMittal investigates hydrogen-based direct …

(DRI is iron ore that has been reduced to iron with without melting.) A pilot plant is to be built in the coming years. The Hamburg plant already has one of the most efficient production processes of the ArcelorMittal Group due to the use of natural gas in a direct reduction plant (DRI, direct reduced iron).

Direct Reduced Iron (DRI) Production Plant

Y3 equipment or facility Z3 natural gas D Construction 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 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.

GASIFICATION AND THE MIDREX? DIRECT REDUCTION PROCESS

iron ore reduction technology operates entirely in the solid state, then the product is called direct reduced iron, or DRI. ... As mentioned in the first section, almost all DRI is produced using natural gas as its fuel source. However, low-cost natural gas is limited 6 ...

Coal gasification for DRI production – An Indian solution

availability of iron ore, thermal coals and natu-ral gas, direct reduction has provided much of the iron units required for growth in steel pro-duction. Direct Reduced Iron (DRI) produc-tion has increased tremendously since 1980, from essentially zero to over 21Mt in

COREX EFFICIENT AND ENVIRONMENTALLY FRIENDLY SMELTING REDUCTION

melter gasifier. Iron ore (lump ore, pellets, or a mixture thereof) is charged into the reduction shaft, where it is reduced to direct reduced iron (DRI) by the reduction gas in counterflow. Discharge screws convey the DRI into the melter gasifier, where final reduction

Direct reduced iron - Wikipedia

Direct reduced iron (DRI), also called sponge iron,[1] 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. Direct reduction refers to solid-state processes which reduce iron ...

The HBI direct reduction process - voestalpine

At the new direct reduction plant of voestalpine in Corpus Christi, Texas, two million tonnes of HBI (Hot Briquetted Iron) of the highest quality will be produced annually. HBI is the product of reducing iron ore with natural gas. HBI stands for hot ...

Fundamental Studies Related to Gaseous Reduction of Iron Oxide

The kinetics of reduction of iron ore powder by H2 and CO gas mixtures with different compositions were studied using a commercial TGA setup. The results showed that the apparent rates of reaction vary linearly with the H 2 and CO contents of the gas. Larger 2

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 ...

The increasing role of direct reduced iron in global steelmaking

The Direct Reduction process Direct reduction processes can be divided roughly into two categories, gas-based, and coal-based. In both cases, the objective of the process is to drive off the oxygen contained in various forms of iron ore (sized ore, concentrates

Method of using a methane-containing gas for reducing …

3/3/1981· A method of using coke oven gas, and more generally gaseous mixtures containing up to about 30% by volume of methane, for the direct gaseous reduction of iron ore in a vertical shaft, moving bed reactor. In addition to the usual reduction zone and cooling zone ...