Use of various MgO resources for high-purity Mg metal production through molten salt electrolysis and vacuum distillation
A green and effective electrolytic process was developed to produce high-purity Mg metal using primary and secondary resources containing MgO as a feedstock. The electrolysis of various MgO resources was conducted using a Cu cathode in MgF2 – LiF – KCl molten salt at 1043 K by applying an average cu...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-02-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956722001712 |
| _version_ | 1797860414775623680 |
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| author | Hyeong-Jun Jeoung Tae-Hyuk Lee Youngjae Kim Jin-Young Lee Young Min Kim Toru H. Okabe Kyung-Woo Yi Jungshin Kang |
| author_facet | Hyeong-Jun Jeoung Tae-Hyuk Lee Youngjae Kim Jin-Young Lee Young Min Kim Toru H. Okabe Kyung-Woo Yi Jungshin Kang |
| author_sort | Hyeong-Jun Jeoung |
| collection | DOAJ |
| description | A green and effective electrolytic process was developed to produce high-purity Mg metal using primary and secondary resources containing MgO as a feedstock. The electrolysis of various MgO resources was conducted using a Cu cathode in MgF2 – LiF – KCl molten salt at 1043 K by applying an average current of 1.44 A for 12.5 h. The electrolysis of calcined North Korean magnesite and seawater MgO clinker yielded Mg alloys of MgCu2 and (Cu) phases with current efficiencies of 89.6–92.4%. The electrolysis of oxidized MgO-C refractory brick, aged ferronickel slag, and ferronickel slag yielded Mg alloys of MgCu2 and (Cu) phases with current efficiencies of 59.3–92.3%. The vacuum distillation of Mg alloys obtained was conducted at 1300 K for 10 h to produce high-purity Mg metal. After vacuum distillation, Mg metal with a purity of above 99.994% was obtained. Therefore, this study demonstrates the feasibility of the production of high-purity Mg metal from various MgO resources using a novel electrolytic process with a Cu cathode, followed by vacuum distillation. |
| first_indexed | 2024-04-09T21:45:27Z |
| format | Article |
| id | doaj.art-4c1d1c12008c4f9c98b72ec7d6e8994d |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-09T21:45:27Z |
| publishDate | 2023-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-4c1d1c12008c4f9c98b72ec7d6e8994d2023-03-25T05:10:57ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-02-01112562579Use of various MgO resources for high-purity Mg metal production through molten salt electrolysis and vacuum distillationHyeong-Jun Jeoung0Tae-Hyuk Lee1Youngjae Kim2Jin-Young Lee3Young Min Kim4Toru H. Okabe5Kyung-Woo Yi6Jungshin Kang7Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro Yuseong-gu, Daejeon 34132, South Korea; Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South KoreaKorea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro Yuseong-gu, Daejeon 34132, South KoreaKorea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro Yuseong-gu, Daejeon 34132, South Korea; Department of Resources Engineering, University of Science and Technology, 217 Gajeong-ro Yuseong-gu, Daejeon 34113, South KoreaKorea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro Yuseong-gu, Daejeon 34132, South Korea; Department of Resources Engineering, University of Science and Technology, 217 Gajeong-ro Yuseong-gu, Daejeon 34113, South KoreaKorea Institute of Materials Science, 797 Changwondae-ro, Seongsan-gu, Changwon, Gyeongnam 51508, South KoreaInstitute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, JapanDepartment of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea; Corresponding authors at: Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro Yuseong-gu, Daejeon 34132, South Korea; Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea; School of Materials Science and Engineering, Pusan National University, 2 Busandaehak-ro, Geumjeong-gu, Busan 44241, South Korea.Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro Yuseong-gu, Daejeon 34132, South Korea; School of Materials Science and Engineering, Pusan National University, 2 Busandaehak-ro, Geumjeong-gu, Busan 44241, South Korea; Corresponding authors at: Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro Yuseong-gu, Daejeon 34132, South Korea; Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea; School of Materials Science and Engineering, Pusan National University, 2 Busandaehak-ro, Geumjeong-gu, Busan 44241, South Korea.A green and effective electrolytic process was developed to produce high-purity Mg metal using primary and secondary resources containing MgO as a feedstock. The electrolysis of various MgO resources was conducted using a Cu cathode in MgF2 – LiF – KCl molten salt at 1043 K by applying an average current of 1.44 A for 12.5 h. The electrolysis of calcined North Korean magnesite and seawater MgO clinker yielded Mg alloys of MgCu2 and (Cu) phases with current efficiencies of 89.6–92.4%. The electrolysis of oxidized MgO-C refractory brick, aged ferronickel slag, and ferronickel slag yielded Mg alloys of MgCu2 and (Cu) phases with current efficiencies of 59.3–92.3%. The vacuum distillation of Mg alloys obtained was conducted at 1300 K for 10 h to produce high-purity Mg metal. After vacuum distillation, Mg metal with a purity of above 99.994% was obtained. Therefore, this study demonstrates the feasibility of the production of high-purity Mg metal from various MgO resources using a novel electrolytic process with a Cu cathode, followed by vacuum distillation.http://www.sciencedirect.com/science/article/pii/S2213956722001712High-purity magnesiumMagnesium oxide resourcesElectrolytic processMetal cathodeVacuum distillation |
| spellingShingle | Hyeong-Jun Jeoung Tae-Hyuk Lee Youngjae Kim Jin-Young Lee Young Min Kim Toru H. Okabe Kyung-Woo Yi Jungshin Kang Use of various MgO resources for high-purity Mg metal production through molten salt electrolysis and vacuum distillation Journal of Magnesium and Alloys High-purity magnesium Magnesium oxide resources Electrolytic process Metal cathode Vacuum distillation |
| title | Use of various MgO resources for high-purity Mg metal production through molten salt electrolysis and vacuum distillation |
| title_full | Use of various MgO resources for high-purity Mg metal production through molten salt electrolysis and vacuum distillation |
| title_fullStr | Use of various MgO resources for high-purity Mg metal production through molten salt electrolysis and vacuum distillation |
| title_full_unstemmed | Use of various MgO resources for high-purity Mg metal production through molten salt electrolysis and vacuum distillation |
| title_short | Use of various MgO resources for high-purity Mg metal production through molten salt electrolysis and vacuum distillation |
| title_sort | use of various mgo resources for high purity mg metal production through molten salt electrolysis and vacuum distillation |
| topic | High-purity magnesium Magnesium oxide resources Electrolytic process Metal cathode Vacuum distillation |
| url | http://www.sciencedirect.com/science/article/pii/S2213956722001712 |
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