| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrometallurgy 2020
|
| Presentation Title |
Development of a Novel Magnesium Metal Production Process by Electrolysis of Magnesium Oxide Using a Tin Metal Cathode |
| Author(s) |
Tae-Hyuk Lee, Young Min Kim, Jin-Young Lee, Jungshin Kang |
| On-Site Speaker (Planned) |
Tae-Hyuk Lee |
| Abstract Scope |
In this study, a novel magnesium production process by utilizing electrolytic method was investigated in order to produce high-purity magnesium metal from magnesium oxide. Electrolysis of magnesium oxide was conducted using a liquidus tin cathode and a carbon or platinum anode in eutectic MgF<sub>2</sub>-LiF molten salt at 1083 K under an applied voltage of 3.0 V. As a result, the Mg-Sn alloy such as Mg<sub>2</sub>Sn was obtained with a current efficiency of 68.2 % under certain conditions. To produce high-purity magnesium metal from the Mg-Sn alloy, vacuum distillation was conducted at 1200 K for a duration of 5-10 h. After the distillation, magnesium metal with a purity of 99.999 mass% was obtained, and the concentration of magnesium in the residue was 0.16 mass%. Therefore, the electrolytic process developed here is feasible for the production of high-purity magnesium metal from magnesium oxide via an environmentally-sound method. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |