Selective depression behavior of guar gum on talc-type scheelite flotation

Yong-zhong Zhang; Guo-hua Gu; Xiang-bin Wu; Kai-le Zhao

doi:10.1007/s12613-017-1470-x

Volume 24 Issue 8

Aug. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(8): 857-862

Yong-zhong Zhang, Guo-hua Gu, Xiang-bin Wu, and Kai-le Zhao, Selective depression behavior of guar gum on talc-type scheelite flotation, Int. J. Miner. Metall. Mater., 24(2017), No. 8, pp. 857-862. https://doi.org/10.1007/s12613-017-1470-x

Cite this article as:

Yong-zhong Zhang, Guo-hua Gu, Xiang-bin Wu, and Kai-le Zhao, Selective depression behavior of guar gum on talc-type scheelite flotation, Int. J. Miner. Metall. Mater., 24(2017), No. 8, pp. 857-862. https://doi.org/10.1007/s12613-017-1470-x

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Research Article

Selective depression behavior of guar gum on talc-type scheelite flotation

+ Author Affiliations

Corresponding authors:
Guo-hua Gu E-mail: guguohua@126.com

Kai-le Zhao E-mail: zhaokaile0557@sina.com
Received: 10 November 2016; Revised: 9 January 2017; Accepted: 12 January 2017

Abstract

Abstract

The depression behavior and mechanism of guar gum on talc-type scheelite flotation were systematically investigated by flotation experiments, adsorption tests, zeta-potential measurements, and infrared spectroscopic analyses. The flotation results for monominerals, mixed minerals, and actual mineral samples indicated that guar gum exhibited much higher selective depression for talc than for scheelite. Bench-scale closed-circuit tests showed that a tungsten concentrate with a WO₃ grade of 51.43% and a WO₃ recovery of 76.18% was obtained. Adsorption tests, zeta-potential measurements, and infrared spectral analyses confirmed that guar gum absorbed more strongly onto the talc surface than onto the scheelite surface because of chemisorption between guar gum and talc. This chemisorption is responsible for the guar gum's highly selective depression for talc and small depression for scheelite. The flotation results provide technical support for talc-type scheelite flotation.
- scheelite;
- talc;
- guar gum;
- flotation;
- depression mechanism

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References

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