Flotation separation depressants for scheelite and calcium-bearing minerals: A review

Ziming Wang; Bo Feng; Yuangan Chen

doi:10.1007/s12613-023-2613-x

Volume 30 Issue 9

Sep. 2023

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2023 > 30(9): 1621-1632

Ziming Wang, Bo Feng, and Yuangan Chen, Flotation separation depressants for scheelite and calcium-bearing minerals: A review, Int. J. Miner. Metall. Mater., 30(2023), No. 9, pp. 1621-1632. https://doi.org/10.1007/s12613-023-2613-x

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Ziming Wang, Bo Feng, and Yuangan Chen, Flotation separation depressants for scheelite and calcium-bearing minerals: A review, Int. J. Miner. Metall. Mater., 30(2023), No. 9, pp. 1621-1632. https://doi.org/10.1007/s12613-023-2613-x

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Invited Review

Flotation separation depressants for scheelite and calcium-bearing minerals: A review

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Corresponding author:
Bo Feng E-mail: fengbo319@163.com
Received: 22 November 2022; Revised: 15 February 2023; Accepted: 16 February 2023; Available online: 17 February 2023

Abstract

Abstract

Owing to the depletion of wolframite, the focus of tungsten extraction has gradually shifted to scheelite. However, separating the associated minerals (e.g., apatite, fluorite, and calcite) and scheelite is challenging because their surface physicochemical properties are similar to those of scheelite. Fortunately, researchers have made substantial progress in separating the minerals of scheelite by using depressants. This study reviews the application and inhibition mechanism of inorganic depressants in obtaining tungsten from its calcium-bearing minerals. The application of new organic depressants in obtaining tungsten from its calcium-bearing minerals and the associated mechanisms are also summarized. After an objective assessment of inorganic and organic depressants’ advantages and disadvantages, possible future research directions for inorganic and organic depressants are proposed. Herein, we provide a theoretical basis for developing scheelite flotation depressants.
- scheelite;
- calcium-bearing minerals;
- flotation;
- depressant

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