Flotation mechanisms of molybdenite fines by neutral oils

Qing-quan Lin; Guo-hua Gu; Hui Wang; You-cai Liu; Jian-gang Fu; Chong-qing Wang

doi:10.1007/s12613-018-1540-8

Volume 25 Issue 1

Jan. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(1): 1-10

Qing-quan Lin, Guo-hua Gu, Hui Wang, You-cai Liu, Jian-gang Fu, and Chong-qing Wang, Flotation mechanisms of molybdenite fines by neutral oils, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 1-10. https://doi.org/10.1007/s12613-018-1540-8

Cite this article as:

Qing-quan Lin, Guo-hua Gu, Hui Wang, You-cai Liu, Jian-gang Fu, and Chong-qing Wang, Flotation mechanisms of molybdenite fines by neutral oils, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 1-10. https://doi.org/10.1007/s12613-018-1540-8

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Research Article

Flotation mechanisms of molybdenite fines by neutral oils

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Corresponding author:
Guo-hua Gu E-mail: guguohua@126.com
Received: 3 February 2017; Revised: 25 August 2017; Accepted: 12 September 2017

Abstract

Abstract

The flotation mechanisms of molybdenite fines by neutral oils were investigated through microflotation test,turbidity measurements,infrared spectroscopy,and interfacial interaction calculations.The results of the flotation test show that at pH 2-11,the floatability of molybdenite fines in the presence of transformer oil is markedly better than that in the presence of kerosene and diesel oil.The addition of transformer oil,which enhances the floatability of molybdenite fines,promotes the aggregation of molybdenite particles.Fourier transform infrared measurements illustrate that physical interaction dominates the adsorption mechanism of neutral oil on molybdenite.Interfacial interaction calculations indicate that hydrophobic attraction is the crucial force that acts among the oil collector,water,and molybdenite.Strong hydrophobic attraction between the oily collector and water provides the strong dispersion capability of the collector in water.Furthermore, the dispersion capability of the collector,not the interaction strength between the oily collectors and molybdenite,has a highly significant role in the flotation system of molybdenite fines.Our findings provide insights into the mechanism of molybdenite flotation.
- molybdenite fines;
- flotation;
- mechanisms;
- neutral oils;
- interfacial interaction;
- hydrophobic attraction

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