Applications of molten salt and progress of molten salt electrolysis in secondary metal resource recovery

Xiao-li Xi; Ming Feng; Li-wen Zhang; Zuo-ren Nie

doi:10.1007/s12613-020-2175-0

Volume 27 Issue 12

Dec. 2020

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2020 > 27(12): 1599-1617

Xiao-li Xi, Ming Feng, Li-wen Zhang, and Zuo-ren Nie, Applications of molten salt and progress of molten salt electrolysis in secondary metal resource recovery, Int. J. Miner. Metall. Mater., 27(2020), No. 12, pp. 1599-1617. https://doi.org/10.1007/s12613-020-2175-0

Cite this article as:

Xiao-li Xi, Ming Feng, Li-wen Zhang, and Zuo-ren Nie, Applications of molten salt and progress of molten salt electrolysis in secondary metal resource recovery, Int. J. Miner. Metall. Mater., 27(2020), No. 12, pp. 1599-1617. https://doi.org/10.1007/s12613-020-2175-0

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Invited review

Applications of molten salt and progress of molten salt electrolysis in secondary metal resource recovery

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Corresponding author:
Xiao-li Xi E-mail: xixiaoli@bjut.edu.cn
Received: 20 May 2020; Revised: 23 August 2020; Accepted: 24 August 2020; Available online: 27 August 2020

Abstract

Abstract

Molten salt is an excellent medium for chemical reaction, energy transfer, and storage. Molten salt innovative technologies should be developed to recover metals from secondary resources and reserve metals from primary natural sources. Among these technologies, molten salt electrolysis is an economic and environment-friendly method to extract metals from waste materials. From the perspective of molten salt characteristics, the application of molten salts in chemistry, electrochemistry, energy, and thermal storage should be comprehensively elaborated. This review discusses further directions for the research and development of molten salt electrolysis and their use for metal recovery from various metal wastes, such as magnet scrap, nuclear waste, and cemented carbide scrap. Attention is placed on the development of various electrolysis methods for different metal containing wastes, overcoming some problems in electrolytes, electrodes, and electrolytic cells. Special focus is given to future development directions for current associated processing obstacles.
- molten salt application;
- molten salt electrochemistry;
- resource recycling;
- cemented carbide scrap

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