Reduction of iron oxides with hydrogen—a review

D Spreitzer, J Schenk - steel research international, 2019 - Wiley Online Library
This review focuses on the reduction of iron oxides using hydrogen as a reducing agent.
Due to increasing requirements from environmental issues, a change of process concepts in …

[HTML][HTML] Hierarchical nature of hydrogen-based direct reduction of iron oxides

Y Ma, IR Souza Filho, Y Bai, J Schenk, F Patisson… - Scripta Materialia, 2022 - Elsevier
Fossil-free ironmaking is indispensable for reducing massive anthropogenic CO 2 emissions
in the steel industry. Hydrogen-based direct reduction (HyDR) is among the most attractive …

The sticking problem during direct reduction of fine iron ore in the fluidized bed

M Komatina, HW GUDENAU - Metallurgical and Materials …, 2018 - metall-mater-eng.com
In this review paper described are possible chemical reactions and their thermodynamic
analysis during direct reduction. The sticking mechanism during direct reduction in the …

Reduction of iron oxide in carbon monoxide atmosphere—reaction controlled kinetics

K Mondal, H Lorethova, E Hippo, T Wiltowski… - Fuel Processing …, 2004 - Elsevier
Thermogravimetric analysis (TGA) of the reduction of Fe2O3 in a continuous stream of 100%
CO was conducted at temperatures ranging from 800 to 900° C. X-ray diffraction analysis of …

Green Ironmaking at Higher H2 Pressure: Reduction Kinetics and Microstructure Formation During Hydrogen-Based Direct Reduction of Hematite Pellets

Ö Özgün, I Dirba, O Gutfleisch, Y Ma… - Journal of Sustainable …, 2024 - Springer
Hydrogen-based direct reduction (HyDR) of iron ores has attracted immense attention and is
considered a forerunner technology for sustainable ironmaking. It has a high potential to …

The limitations on organic detection in Mars-like soils by thermal volatilization–gas chromatography–MS and their implications for the Viking results

R Navarro-González, KF Navarro… - Proceedings of the …, 2006 - National Acad Sciences
The failure of Viking Lander thermal volatilization (TV)(without or with thermal degradation)–
gas chromatography (GC)–MS experiments to detect organics suggests chemical rather …

Fundamentals of green steel production: on the role of gas pressure during hydrogen reduction of iron ores

IR Souza Filho, Y Ma, D Raabe, H Springer - JOM, 2023 - Springer
Out of the multitude of researched processing routes for sustainable ironmaking, hydrogen-
based direct reduction and hydrogen plasma smelting reduction (HyPSR) are currently the …

[HTML][HTML] Hydrogen reduction of iron ore pellets: A surface study using ambient pressure X-ray photoelectron spectroscopy

A Heidari, MK Ghosalya, MA Mansouri… - International Journal of …, 2024 - Elsevier
Abstract Using Ambient Pressure X-ray Photoelectron Spectroscopy (APXPS), this study
investigates the reduction behavior of iron oxides in direct reduction (DRI) and blast furnace …

Kinetics analysis of direct reduction of iron ore by hydrogen in fluidized bed based on response surface methodology

J Zhang, S Li, L Wang - International Journal of Hydrogen Energy, 2024 - Elsevier
The present research investigates the efficacy of fluidized bed direct reduction of hematite
ore using H 2 as a metallurgical technology. The study uses response surface methodology …

Kinetics of hydrogen reduction of Brazilian hematite in a micro-fluidized bed

K He, Z Zheng, Z Chen, H Chen, W Hao - International Journal of Hydrogen …, 2021 - Elsevier
Substituting hydrogen utilization for coke consumption is the main research field for the
development of iron and steel manufacturing. Understanding the reaction kinetics of the …