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Minerals 2016, 6(3), 70; https://doi.org/10.3390/min6030070

The Desulfurization of Magnetite Ore by Flotation with a Mixture of Xanthate and Dixanthogen

School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China
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Academic Editor: Kota Hanumantha Rao
Received: 27 May 2016 / Revised: 24 June 2016 / Accepted: 4 July 2016 / Published: 8 July 2016
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Abstract

The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore processing. This study utilized froth flotation to float pyrrhotite away from magnetite using collectors of xanthate and dixanthogen. It was found that xanthate or dixanthogen alone could not achieve selective separation between pyrrhotite and magnetite in flotation. A high loss of magnetite was obtained with xanthate, while a low desulfurization degree was obtained with dixanthogen. It was interesting that a high desulfurization ratio was achieved with little loss of magnetite when xanthate was mixed with dixanthogen as the collector. The synergistic effect of the mixed collector on pyrrhotite was studied by electrokinectic studies and FTIR measurements. It was found that xanthate was the anchor on pyrrhotite and determined its selectivity against magnetite, while dixanthogen associated with xanthate, enhancing its hydrophobicity. This study provides new insights into the separation of iron minerals. View Full-Text
Keywords: pyrrhotite; mixed collectors; flotation; synergetic effect pyrrhotite; mixed collectors; flotation; synergetic effect
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yu, J.; Ge, Y.; Cai, X. The Desulfurization of Magnetite Ore by Flotation with a Mixture of Xanthate and Dixanthogen. Minerals 2016, 6, 70.

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