MIDREX H2: Ultimate Low CO2 Ironmaking and its place in …
The use of hydrogen in a MIDREX® Shaft Furnace, known as the MIDREX H2™, holds great promise to be developed and realized in either new or existing DRI Plants. The main obstacle to implementing hydgrogen direct reduction ironmaking is in the difficulty of producing pure hydrogen without a large CO2 footprint. Despite this hurdle, governments ...
WORLD DIRECT REDUCTION STATISTICS
The MIDREX Process continued to account for approximately 80% of world-wide production of DRI by shaft furnaces in 2023: 95.4Mt. Almost 11 Mt of HDRI (73% share) and 10.8Mt of HBI (90% share) were produced by MIDREX Plants in this period. Natural gas is generally the main source of reducing gas in shaft furnace-based processes, and DRI produced
Shaft Furnace Direct Reduction Technology
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 …
Maximizing Iron Unit Yield from Ore to Liquid Steel (Part 2
HDRI can be transported from a MIDREX® Shaft Furnace to a nearby steel mill at up to 650° C by one of three methods: enclosed and insulated conveyor, specially configured transport vessel or HOTLINK®, a system for direct feeding of HDRI to an EAF. ... All material "impacts" with the chute lining are very low angle, and thus low energy ...
DIRECT FROM
As the diameter of the reduction furnace expanded, the height also was increased to maintain the desired flow characteristics and the speed of the reactions that occur in the furnace. The shaft furnaces in the Portland plant were 45-46 meters tall. Today, reduction furnaces in the two newest MIDREX Plants (Tosyali and AQS) measure 137.5
MIDREX® Direct Reduction Plants 2021 …
Module 3 holds the record of the highest annual production by an HBI module and from a 7.0-meter MIDREX Shaft Furnace, with over 2.0 million tons, set in 2020. The combined production of both modules surpassed the 30-million-ton …
MIDREX® Process
Proven long-term performance and availability producing more than 60% of the world's DRI since 1984. Built on state-of-the-art technology, fast start ups. Multiple feed, energy sources, …
SINCE 1969, THERE HAVE BEEN NEARLY 100 MIDREX …
Largest HBI Shaft Furnace Module in Production 9. Produced more than 2.28 million tons of direct reduced iron (DRI) in 2021, which is a world record for a single direct reduction module.
DIRECT FROM
use of hydrogen as a fuel and chemical reactant in the MIDREX Process. The ultimate method for drastically reducing the steel . industry's CO. 2. footprint is the use of green hydrogen (produced from renewable energy) for DRI production in a MIDREX Shaft Furnace. This concept, known as MIDREX H. 2, holds great prom -
Midrex shaft process | PPT
The Midrex process uses a shaft furnace to convert iron oxide pellets or lumps into direct reduced iron (DRI) through the removal of oxygen using a reducing gas composed of hydrogen and carbon monoxide produced from natural gas. Natural gas and recycled offgas are converted to hydrogen and carbon monoxide in a reformer and this reducing gas is ...
"It All Started in Portland…" 50 Years Ago
Development of the MIDREX Shaft Furnace started with the Toledo pilot plant, which included a 1.3-feet (~0.4-meter) inside diameter (ID) reduction vessel. By the time of the Portland commercial plant in 1969, the size of the reduction …
Adapting to Raw Materials Challenges: Part 1
Process upset conditions in the shaft furnace can result in significant iron unit loss to non-prime product, which may or may not be suitable for recycling through the shaft furnace. Sulfur and phosphorus content – High S and/or P levels in the DRI/HBI may require different slag practices in the EAF to remove the contaminants.
The World leader in direcT reducTion
Midrex pioneered shaft furnace direct reduction in the 1960 s and we continue to develop innovative technology solutions. We benefit from a proven history of effective collaboration with our process licensees. Our shaft furnace and rotary hearth furnace processes have steadily advanced in terms of plant capacity, productivity, energy efficiency ...
Carbon Capture & Use
Any MIDREX Flex plant can be designed with CO 2 removal or with provisions to install CO 2 removal at a later date if it is economical (e.g. carbon tax credits) and if there is a means to store or utilize the CO 2.. There are two options to separate CO 2 and capture it. Option 1 (by itself) removes half. Option 2 (by itself) removes almost everything (near zero).
Optimizing DRI production using natural gas
THE MIDREX® REFORMER HAS BEEN AT THE CORE OF THE MIDREX® PROCESS SINCE ITS INCEPTION. THROUGH THE YEARS IT HAS BEEN IMPROVED AND REMAINS THE STANDARD OF THE INDUSTRY. In MIDREX NG™, iron oxide is reduced in the MIDREX® Shaft Furnace by using reducing gas externally generated in the
MIDREX
=> Although originally developed for use with high grade pellets, the Midrex shaft furnace is now able to use some amount of lump ores. Optimum process conditions are often obtained by …
Fueling the Future of Ironmaking: MIDREX Flex™
Existing natural gas-based MIDREX Plants already have significant percentages of hydrogen in the reducing gas, with a typical hydrogen to carbon monoxide (H 2 /CO) ratio of 1.5 corresponding to approximately 55% H 2 and 36% CO. So, MIDREX Flex technology can be considered an "evolutionary innovation," as operation of a MIDREX Shaft Furnace with high levels of …
Optimization of the Iron Ore Direct Reduction Process …
The shaft furnace is modeled as a set of interconnected one-dimensional zones into which the principal chemical reactions (3-step reduction, methane reforming, Boudouard and water gas shift) are accounted for with their kinetics. ... Shams A., Moazeni F. Modeling and Simulation of the MIDREX Shaft Furnace: Reduction, Transition and Cooling ...
Future Processing Options for Hydrogen DRI
The need to ensure even transfer of gas and heat through the shaft section of the furnace without the presence of a coke layer between ore, pellets, and sinter. ... Direct from Midrex 2021 (2nd Quarter), 3-11; Hornby, S, "Ramifications of H 2 …
Numerical simulation of the influence of operating …
Ghadi et al. [8] developed a CFD model to investigate the impact of a dual gas injection system on the primary process variables and energy consumption in the MIDREX shaft furnace.Xu et al. [9] established a two-dimensional mathematical model to study the influence of the reducing gas composition on the reduction conditions within the pre-reduction shaft …
Modeling and Simulation of the MIDREX Shaft Furnace
The whole part of the shaft furnace of MIDREX direct reduction technology, the reduction, transition and cooling zone, was simulated. In this study, mass and energy balance …
MIDREX® Direct Reduction Plants 2023 OPERATIONS …
Tosyali has achieved the most production from a 7.5-meter MIDREX Shaft Furnace to date and set a new annual electricity consumption record in 2023. Over 76% of production went to the adjacent steel shop as HDRI. Together with Algerian Qatari Steel (AQS), this is the largest capacity MIDREX Module built to date.
WORLD DIRECT REDUCTION STATISTICS
the MIDREX® Shaft Furnace to the nearby melt-shop, thus im-proving energy efficiency. UNDER CONSTRUCTION AQS to Add 2.5 Million Tons of DRI in Algeria Construction of a 2.5 million t/y MIDREX Combination DRI Plant for Algerian Qatari Steel (AQS) continued throughout 2018. The plant, located in Bellara, Algeria, 375 km east of
Designed for Changing Market Conditions
Leading up to the SGI project (Editor's note: plant now owned and operated by Antara Steel Mills, a Lion Group company), Midrex had the idea of designing a reduction furnace to discharge hot DRI (HDRI).Several development programs were conducted in parallel by Midrex and its licensees. The result was a marriage of the proven MIDREX® Shaft Furnace design with …
Modeling and Simulation of the MIDREX Shaft Furnace
The direct reduction is a process for reducing iron ore and producing sponge. There are several technologies, like MIDREX1 and H.Y.L2 using the countercurrent shaft furnace to make sponge iron.. In MIDREX technology, the furnace is a vertical shaft (Fig. 1).A charge of pelletized or lump ore is loaded into the top of the furnace and descends by gravity through the …
Design Shaft Furnace (Mt/y) ModulesStart-up Product …
* There are additional MIDREX® Plants licensed by Kobe Steel, Ltd. of Japan ** Client's projected date of start up as of 1Q 2014 Total World Production: 71.4 Mt 2015 2016 2017 MIDREX® 79.7% 78.8% 79.0% Other 20.3% 21.2% 21.0% Source: Midrex Technologies, Inc. MIDREX® 79% 2017 World Shaft Furnace Production by Process Other Shaft Furnace
MIDREX® Direct Reduction Plants – 2020 …
With over 32 million tons produced, ACINDAR has achieved the most production from a 5.5-meter MIDREX Shaft Furnace to date. ANTARA STEEL MILLS. The first MIDREX HBI Module operated over its annual rated capacity and within …
Thermodynamic strategy for hydrogen-based direct reduction shaft …
Shams A, Moazeni F. Modeling and simulation of the MIDREX shaft furnace: reduction, transition and cooling zones. JOM 2015; 67: 2681–2689. Crossref. Web of Science. Google Scholar. 35. Jiang X, Wang L, Shen FM. Shaft furnace direct reduction technology – Midrex and Energiron. Adv Mater Res 2013; 805: 654–659. Crossref.
MIDREX Plants
MIDREX® Plants are able to perform reliably at or above rated capacity in climates that range from the dry, sandy heat of Saudi Arabia to the frigid cold of Canada and Russia. ... Experience breathtaking views from the shaft furnace tower or glimpse into the briquetting machine as you immerse yourself in two of the world's most modern HBI ...
MIDREX Process: Bridge to Ultra-low CO Ironmaking
the shaft furnace. In the shaft furnace reducing gas is counter-, currently fed to the packed bed of iron-ore pellets or lump ore descending therein. The iron-ore pellets are heated up reduced, and carburized very, efficiently by the ascending gas. The iron ore is the shaft furnace and discharged from the bottom of the shaft furnace as CDRI or ...