About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Rare Metal Extraction & Processing
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Presentation Title |
Production of High-purity Mg Metal from Various MgO Resources through a Novel Electrolytic Process Using a Cu Cathode and Vacuum Distillation |
Author(s) |
Hyeong-Jun Jeoung, Tae-Hyuk Lee, Youngjae Kim, Jin-Young Lee, Young Min Kim, Toru H. Okabe, Kyung-Woo Yi, Jungshin Kang |
On-Site Speaker (Planned) |
Hyeong-Jun Jeoung |
Abstract Scope |
In this study, the feasibility of producing Mg metal from primary and secondary resources containing MgO with the novel Mg production process was investigated. The electrolysis of various MgO resources was conducted in a MgF2–LiF–KCl molten salt at 1043 K by applying an average current of 1.44 A for 12.5 h using Cu cathode and C anode. After electrolysis, 9.20–14.4 mass% Mg–Cu alloys with a mixture of MgCu2 and Cu (Mg) phases were obtained with 59.3–92.4 % current efficiency, and the average cell potential was 2.43–2.75 V. After vacuum distillation of the Mg alloys at 1300 K for 10 h, Mg metal with a purity of 99.994–99.999 % was obtained with 90.7–91.5 % of recovery efficiency. Therefore, the proposed electrolysis process using a Cu cathode followed by vacuum distillation is an effective method to produce high-purity Mg metal from various MgO resources. |
Proceedings Inclusion? |
Planned: |