About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Pyrometallurgy: Pyrometallurgical Off Gas Handling, Processing and Cleaning
|
| Presentation Title |
Pre-Reduction Concepts for Manganese Ferroalloys Production |
| Author(s) |
Halvor Dalaker, Chao Fu, Trygve Lindahl Schanche |
| On-Site Speaker (Planned) |
Halvor Dalaker |
| Abstract Scope |
Previous studies have demonstrated that pre-reduction of manganese ores using CO-rich off-gas can significantly reduce both energy use and carbon consumption. While this process increases the CO2 concentration in the off-gas, substantial amounts of CO typically remain, necessitating further gas conditioning prior to CO2 capture and storage. This work investigates advanced pre-reduction concepts designed to maximize the conversion of CO to CO2 directly within the process, thereby minimizing downstream gas treatment requirements and maximizing energy and carbon savings. The analyses have been carried out using idealised simulations in HSC Sim. The results indicate that avoiding CO combustion can potentially reduce the energy required for CO2 capture. In particular, CLC-based cases show potential for delivering nearly pure CO2 streams while generating surplus heat that could offset pre-reduction energy demands. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, Pyrometallurgy, Sustainability |