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Published in:
2023 | OriginalPaper | Chapter
Hydrogen-Based Direct Reduction of Iron Oxides
Authors : Dierk Raabe, Hauke Springer, Isnaldi Souza Filho, Yan Ma
Published in: Advances in Pyrometallurgy
Publisher: Springer Nature Switzerland
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Abstract
The lecture presents some recent progress in understanding the key mechanisms of hydrogen-based direct reduction. The kinetics of the solid-state reduction reactions strongly depend on mass transport kinetics, nucleation during the multiple phase transformations, the oxide’s chemistry and microstructure, and on plasticity, damage, and fracture associated with the phase transformation and mass transport phenomena occurring during reduction. Understanding these effects is key to produce hydrogen-based green steel and design corresponding direct reduction shaft or fluidized bed reactors, enabling massive CO2 reductions.