About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Pyrometallurgy: Developing Low Carbon Pathways
|
Presentation Title |
Use of H2 in Mn-ferroalloy Production |
Author(s) |
Merete Tangstad, Trygve Lindahl Schanche, Faan Du Preez |
On-Site Speaker (Planned) |
Merete Tangstad |
Abstract Scope |
The use of H2 as a reductant in the iron and steel industry is obvious choices. For pyrometallurgical processes like e.g. Mn and Si, H2 can not be the only solution, as the stability of the oxides of these elements are higher than Fe. H2 can however be used in the Mn-process together with other low CO2 emission mitigations like the use of electrolysis or the use of biocarbon or the use of biocarbon. In the Mn-ferroalloy process H2 can be used to reduce higher manganese oxides to MnO, and the last part of the reduction to metallic Mn can be done with biocarbon or with electrolysis. The reduction of higher manganese oxides to MnO has been investigated with pure H2 or with CO/H2 mixtures, and it is shown that the use of H2 will give a higher prereduction rate compared to the traditional CO gas. |
Proceedings Inclusion? |
Planned: |
Keywords |
Pyrometallurgy, Environmental Effects, |