(PDF) Properties and features of direct reduced iron
These attractive features have led to an increase in worldwide production of direct reduced iron, which is currently approaching 50 million tons. Thus, direct reduced iron is gaining more importance.
Process Improvements for Direct Reduced Iron Melting in …
Steelmaking based on direct reduced iron (DRI, and its compacted derivative hot briquetted iron, HBI) is an anticipated important global alternative to current steel production based on FeOx reduction in blast furnaces due to its lower specific CO2 emission. The majority of DRI is melted and refined in the electric arc furnace with …
The DRI dilemma: Could raw material shortages …
Traditionally, DRI is produced from the direct reduction of iron ore using natural gas, but emerging technology is enabling the production of DRI using hydrogen as well. Depending on the source of …
Direct Reduced Iron (DRI)
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. This process of directly reducing the iron ...
Analysis of direct reduced iron (DRI) by X-ray diffraction
25 July 2017. Contact sales. This application note describes the benefits of X-ray diffraction (XRD) to the quantitative determination of the phase content and the calculation of process critical parameters for the production of direct reduced iron (DRI). Direct reduced iron (DRI), also called sponge iron, is produced by the reduction of iron ...
Forms of DRI
Most MIDREX® Plants built to-date produce CDRI. After reduction, the DRI is cooled in the lower part of the MIDREX® Shaft Furnace to about 50° C. This material is typically used in a nearby EAF and passivated to prevent reoxidation and loss of metallization. CDRI is ideal for continuous charging to the EAF.
Use of Direct Reduced Iron (DRI) in the Electric Arc
• DRI is a high Fe, low residual metallic material for producing high quality iron and steel products in a wide variety of furnaces • DRI is shipped as old DRI, but in integrated DRI/EAF mills can be charged hot directly to the EAF (furnace discharge temperature is 650-700°) The value-in-use of DRI is different for each melt shop and will ...
WORLD DIRECT REDUCTION STATISTICS
nnual global direct reduced iron (DRI) production in 2021 was 119.2 million tons (Mt). DRI output was up by 13.7% from the revised 104.8 Mt produced in 2020, and up 10.2% from the previous record of 108.1 Mt in 2019. Once again, the combination of India and Iran produced well over half of the global DRI.
GREEN STEEL THROUGH HYDROGEN DIRECT …
1. DIRECT REDUCTION OF IRON ORE 0 400 800 1200 1600 2000 2010 2019 Iron Production (Mt) Pig iron Direct reduced iron Figure 1: Iron production, 2000, 2010, 2019 Source: (WSA, 2020) India is the country with the largest DRI production, reaching 34 Mt in 2019, accounting for around a third of global DRI (WSA, 2020). The majority of Indian …
Global green hydrogen-based steel opportunities …
The outputted sponge iron can be fed directly to the EAF (hot-DRI at 850°C), stored on site (cold-DRI) for later re-heating and EAF charging, or modified into a more stable product as hot ...
From Ore to Iron with Smelting and Direct Iron Reduction
Direct iron reduction or sponge iron production was practiced in ancient times. The sponge iron was then hammered to remove impurities and produce iron weapons and tools. The low cost of natural gas has made the direct reduced iron (DRI) process more attractive to steelmakers. The MIDREX® process is currently the most …
Direct reduced iron process
In the direct-reduced iron (DRI) process, the iron ores are reduced directly to sponge iron by gaseous reducing agents! Electro-steel process. In the electric steel …
(PDF) A REVIEW OF IRONMAKING BY DIRECT REDUCTION
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 ...
Fact sheet Hydrogen (H2)-based ironmaking
The iron used in the steelmaking process is currently chemically reduced from iron ore through the use of fossil resources – natural gas or coal. This process is known as Direct Reduced Ironmaking (DRI). Carbon combines with the oxygen in the iron ore, producing metallic iron and a carbon-rich process gas, according to the
Producing Clean Steel :: Cleveland-Cliffs Inc. (CLF)
Direct Reduced Iron (DRI) is a high-quality metallic product (~90% pure iron) produced by the direct reduction of iron oxide at a temperature below the fusion point of iron. It is primarily used in electric arc furnaces (EAF) but can also be used by blast furnaces and other iron and steelmaking applications.
Direct Reduced Iron (DRI) Market | Global …
Direct Reduced Iron Market Outlook 2031. The global direct reduced iron market was valued over US$ 21.87 Bn in 2020. It is estimated to expand at a CAGR of 8% from 2021 to 2031. The global direct reduced iron …
Green Hydrogen-Based Direct Reduction for Low …
Therefore, the natural gas (NG)-based direct reduction (DR) acts as a basis for the first step of this transition. The high flexibility …
A review of ironmaking by direct reduction processes: …
DRI (also known as sponge iron) is an important advancement in the ironmaking industry due to its high productivity and strong adaptability to raw materials (Guo et al., 2017). 2. ... have been focused on the utilization of renewable energy sources to replace fossil fuels and employment of alternative direct iron ore reduction technologies …
Direct Reduced Iron (DRI) | International Iron …
Direct-reduced iron and its more transportable sister hot-briquetted iron have dallied in the wings of mainstream steelmaking as high-quality and low-residue …
Direct Reduced Iron: Most Efficient Technologies for …
DRI is produced through the removal (reduction) of oxygen from iron ore in its solid state. This technology encompasses various processes based on different …
Direct Reduction Process
Iron Resources and Direct Iron Production. A.E. Morris, in Encyclopedia of Materials: Science and Technology, 2001. 1.2 Natural Gas. Natural gas-based DR processes account for about 92% of worldwide production of DRI. Natural gas consists primarily of methane (CH 4), together with small amounts of other hydrocarbons, nitrogen, and carbon ...
Green Hydrogen-Based Direct Reduction for Low-Carbon …
Due to its high implementation rate, representing about 65% of the total worldwide produced direct reduced iron (DRI), the MIDREX process was selected as basis for the following considerations (see Figure 1). The key component of the DR process is a shaft furnace, where the reduction of iron ore to sponge iron by using NG or other gaseous ...
A review of ironmaking by direct reduction …
open access. Abstract. Currently the majority of the world's steel is produced through either one of the two main routes; the integrated Blast Furnace – Basic Oxygen …
Oman's Duqm set to become regional hub for direct-reduced iron …
The development of DRI plants within the Special Economic Zone at Duqm (SEZAD) is set to transform Oman into a major steel exporter, providing a significant boost to the country's economy. DRI is a high-quality iron ore product that is used to make steel. It is produced by reducing iron ore with natural gas in a process called direct reduction.
Direct Reduced Iron – IspatGuru
Direct Reduced Iron. Direct reduced iron (DRI) is the alternative iron source for steelmaking. Its advantages as a iron product and diluent for impurities, introduced with scrap, are well documented. DRI is also known as sponge iron. It refers to porous iron produced by the direct reduction (DR) process. It is the second most viable ...
Direct-Reduced Iron
Direct reduced iron is iron ore in the form of lumps, fines or pellets that have had the oxygen removed by using hydrogen and carbon monoxide. Typical sources of carbon monoxide are natural gas, coal gas, and coal. Other energy inputs into the production process often include oil and electricity. Since much of the energy used is in …
The perspective of hydrogen direct reduction of iron
Industrial-scale hydrogen-ironmaking, also known as direct reduction of iron (DRI) using hydrogen, is a process that aims to produce iron without the use of fossil fuels ( Chevrier, 2020; van Vuuren et al., 2022; Tang et al., 2020; Wang et al., 2021; Ledari et al., 2023 ). This process has the potential to significantly reduce carbon dioxide ...
DRI production | International Iron Metallics Association
DRI production. 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 …
DRI Products & Applications
DIRECT REDUCED IRON – THE VERSATILE METALLIC DRI Products & Applications 2 DIRECT REDUCED IRON THE VERSATILE METALLIC 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. DRI is high in iron content and low in copper and …
Direct Reduced Iron: The New Age of HBI
increased use of direct reduction, producing direct reduced iron (DRI), and especially, hot-briquetted iron (HBI) Low-Carbon Innovations. As the steel industry moves toward carbon neutrality in …
