About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Towards a Future of Sustainable Production and Processing of Metals and Alloys
|
Presentation Title |
Hydrogen Reduction of Ferroalloys |
Author(s) |
Maryam Al-Buainain, Samuel Pennell, David Dunand |
On-Site Speaker (Planned) |
Maryam Al-Buainain |
Abstract Scope |
Production of alloy steel incurs high energetic costs and a large greenhouse gas footprint due to the production of ferroalloys via the reduction of non-ferrous oxides (e.g., oxides of Mn, Ni, Cr, V, and Mo) with carbon (carbothermic reduction), or aluminum and silicon (metallothermic reduction). This work studies the solid-state reduction mechanisms, with hydrogen, of various non-ferrous oxides to form ferroalloys. A blend of oxide powders is exposed to a flow of pure hydrogen at various temperatures for various times, to partially or fully reduce the ferroalloys, and subsequently sinter it: the microstructural and phase evolution of the obtained ferroalloys are reported. In situ X-ray diffraction experiments are carried out at different temperatures under flowing hydrogen to directly measure the reduction kinetics and to develop a fundamental understanding of the reduction mechanisms, including the formation of transient phases, active during hydrogen reduction. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Sustainability, |