| Selective depression behavior of guar gum on talc-type scheelite flotation |
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| 作者姓名： | Yong-zhong Zhang Guo-hua Gu Xiang-bin Wu Kai-le Zhao |
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| 作者单位： | School of Geosciences and Info-Physics, Central South University, Changsha 410083, China |
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| 基金项目： | This study was financially supported by the National Natural Science Foundation of China，the National Key Technology R&D Program，the Science and Technology Plan-ning Project of Guangdong Province |
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| 摘 要： | 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.
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| 关 键 词： | scheelite talc guar gum flotation depression mechanism |
Selective depression behavior of guar gum on talc-type scheelite flotation |
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| Yong-zhong Zhang,Guo-hua Gu,Xiang-bin Wu,Kai-le Zhao.Selective depression behavior of guar gum on talc-type scheelite flotation[J].International Journal of Minerals,Metallurgy and Materials,2017,24(8):857-862. |
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| Authors: | Yong-zhong Zhang Guo-hua Gu Xiang-bin Wu Kai-le Zhao |
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| Institution: | 1. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China;Department of Land and Resources of Hunan Province, Changsha 410004, China;2. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;3. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China |
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| 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 ob-tained. 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. |
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| Keywords: | scheelite talc guar gum flotation depression mechanism |
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