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Volume 13
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10.3390/min13091223
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Review

Development Review on Leaching Technology and Leaching Agents of Weathered Crust Elution-Deposited Rare Earth Ores

by
Zhigao Xu
*,
Gang Li
,
Huifang Yang
,
Aoyang Sha
,
Zhengyan He
,
Yuchen Tang
,
Ming Wu
and
Jun Qu
College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Minerals 2023, 13(9), 1223; https://doi.org/10.3390/min13091223
Submission received: 25 July 2023 / Revised: 1 September 2023 / Accepted: 14 September 2023 / Published: 17 September 2023
(This article belongs to the Special Issue Recent Developments on the Leaching Process of Rare Earth Ore)
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Abstract

Weathered crust elution-deposited rare earth ores are key strategic resources and the main source of medium and heavy rare earths. This paper summarizes the development of leaching technology of rare earth ores, compares the advantages and disadvantages of the three generations of leaching technology, and introduces the improved heap leaching technology and the new technology of the leaching–extraction integration and enhanced leaching, focusing on the leaching of weathered crust elution-deposited rare earth ores. In this paper, the development of the leaching agents is expounded, and the research status and the development trend of the composite ammonium salt leaching agent, impurity inhibition leaching agent, swelling inhibition leaching agent, and seepage-promotion leaching agent are also introduced. And this paper summarizes the leaching mechanism and the development direction of leaching agents. Moreover, the future key research direction of weathered crust elution-deposited rare earth ores is proposed, which is green, efficient, safe development and utilization.
Keywords: weathered crust elution-deposited rare earth ore; leaching technology; leaching agent; research progress weathered crust elution-deposited rare earth ore; leaching technology; leaching agent; research progress

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MDPI and ACS Style

Xu, Z.; Li, G.; Yang, H.; Sha, A.; He, Z.; Tang, Y.; Wu, M.; Qu, J. Development Review on Leaching Technology and Leaching Agents of Weathered Crust Elution-Deposited Rare Earth Ores. Minerals 2023, 13, 1223. https://doi.org/10.3390/min13091223

AMA Style

Xu Z, Li G, Yang H, Sha A, He Z, Tang Y, Wu M, Qu J. Development Review on Leaching Technology and Leaching Agents of Weathered Crust Elution-Deposited Rare Earth Ores. Minerals. 2023; 13(9):1223. https://doi.org/10.3390/min13091223

Chicago/Turabian Style

Xu, Zhigao, Gang Li, Huifang Yang, Aoyang Sha, Zhengyan He, Yuchen Tang, Ming Wu, and Jun Qu. 2023. "Development Review on Leaching Technology and Leaching Agents of Weathered Crust Elution-Deposited Rare Earth Ores" Minerals 13, no. 9: 1223. https://doi.org/10.3390/min13091223

APA Style

Xu, Z., Li, G., Yang, H., Sha, A., He, Z., Tang, Y., Wu, M., & Qu, J. (2023). Development Review on Leaching Technology and Leaching Agents of Weathered Crust Elution-Deposited Rare Earth Ores. Minerals, 13(9), 1223. https://doi.org/10.3390/min13091223

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