About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thermodynamics for Sustainability: An EPD Symposium in Honor of Kazuki Morita
|
| Presentation Title |
A thermodynamic study of molten oxide electrolyte properties for zero emission manganese production through electrowinning |
| Author(s) |
Braulio Beltrán-Pitarch, Zhaohui Wang, Gřril Jahrsengene, Marthe Nybrodahl, Karen Osen, Espen Sandnes |
| On-Site Speaker (Planned) |
Braulio Beltrán-Pitarch |
| Abstract Scope |
The production of manganese is mainly carried out in submerged arc furnaces through carbothermic reduction, which generates direct CO2 emissions. A promising alternative to this method is the deposition of liquid manganese in a molten oxide electrolytic cell using an inert oxygen evolving anode, which eliminates the CO2 emissions and could be advantageous in terms of metal purity. However, manganese production using molten oxide electrolysis is still a technology under development with many uncertainties. One of the most critical aspects when studying these systems is the composition of the electrolyte, which will define its physicochemical properties such as liquidus temperature, basicity, and viscosity. Here, we present a thermodynamic study applying the chemical thermodynamics software FactSage for obtaining properties of different Al2O3-CaO-SiO2-MgO-MnO electrolyte compositions. These simulations are highly beneficial for developing molten oxide technology, which could ultimately change drastically the way metals are produced. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electrometallurgy, Extraction and Processing, Process Technology |