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Minerals 2018, 8(4), 142; https://doi.org/10.3390/min8040142

Performance Analysis of Thiocarbonohydrazide as a Novel Selective Depressant for Chalcopyrite in Molybdenite-Chalcopyrite Separation

1
School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China
2
Si Chuan Non-Ferrous Technology Group CO., Ltd., Chengdu 610037, China
3
School Environment & Resource, Southwest University of Science & Technology, Mianyang 621010, China
*
Author to whom correspondence should be addressed.
Received: 15 February 2018 / Revised: 16 March 2018 / Accepted: 16 March 2018 / Published: 2 April 2018
(This article belongs to the Special Issue Flotation Chemistry)
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Abstract

A novel surfactant, thiocarbonohydrazide (TCH), was synthesized and tested for the first time as a selective chalcopyrite depressant in Cu-Mo separation. Its adsorption mechanisms on chalcopyrite were studied by flotation tests, zeta potential, FTIR, XPS and ToF-SIMS measurements. FTIR and zeta potential analyses suggested that there was a strong chemisorption reaction between TCH and chalcopyrite, resulting in the formation of TCH–copper complexes. XPS and ToF-SIMS measurements further confirmed the chemisorption of TCH onto the chalcopyrite surface and showed that this chemisorption reaction is due to its S and N atoms, which form five-membered chelating rings by releasing H ions. View Full-Text
Keywords: chalcopyrite; molybdenite; separation; thiocarbonohydrazide chalcopyrite; molybdenite; separation; thiocarbonohydrazide
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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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Guan, C.; Yin, Z.; Ahmed Khoso, S.; Sun, W.; Hu, Y. Performance Analysis of Thiocarbonohydrazide as a Novel Selective Depressant for Chalcopyrite in Molybdenite-Chalcopyrite Separation. Minerals 2018, 8, 142.

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