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| Research progress on the preparation of hafnium metal by molten salt electrolysis |
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Received:July 18, 2025
Revised:October 17, 2025
Accepted:October 23, 2025
Published Online:April 30, 2026
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| DOI：10.3969/j.issn.1005-7854.2026.02.012 |
| KeyWord:hafnium metal (Hf);molten salt electrolysis;electrolyte system;electrochemical mechanism;research progress |
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| 1.National Engineering Research Center for Environment-friendly Metallurgy in Producing Premium Non-ferrous Metals, China GRINM Group Co. Ltd., Beijing 101407, China;2.GRINM Resources and Environment Tech. Co. Ltd., Beijing 101407, China;3.General Research Institute for Nonferrous Metals, Beijing 100088, China |
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| Abstract: |
| Hafnium metal (Hf) is a rare and refractory metal with high-temperature corrosion resistance, outstanding nuclear properties and excellent processing properties, which is widely used in industrial manufacturing, aerospace, atomic energy industry and other fields. The traditional metal thermal reduction method for producing hafnium has limitations such as long process, high cost and high energy consumption. The molten salt electrolysis method has the advantages of short process, small-scale production, etc., making it a promising alternative to traditional Kroll process. This paper comprehensively discusses the research progress of molten salt electrolysis to prepare hafnium, focusing on the research status of electrolyte system and electrochemical mechanism of this process, in order to provide research ideas for exploring a new process for molten salt electrolysis to prepare hafnium metal. |
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