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Advances in Materials Science and Engineering
Volume 2018 (2018), Article ID 4656424, 9 pages
Research Article

Effect of Copper and Iron Ions on the Sulphidizing Flotation of Copper Oxide in Copper Smelting Slag

1School of Resource and Environment, Wuhan University of Technology, Wuhan 200245, China
2School of Mechanical, Shanghai Dianji University, Shanghai 201306, China

Correspondence should be addressed to Qing-qing Pan

Received 13 October 2017; Revised 6 December 2017; Accepted 4 January 2018; Published 11 March 2018

Academic Editor: Jun Liu

Copyright © 2018 Qing-qing Pan and Hui-qing Peng. 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.


The treatment of smelting slag has attracted much attention nowadays. This study investigates the influence of Na2S, CuSO4, and FeCl3 on sulphidizing flotation of copper oxide. The results show that a proper Cu2+ concentration can increase the sulphidizing effect of copper oxide, while Fe3+ inhibits the sulphidizing effect. Further analysis shows that Cu2+ ions can reduce the surface potential, increase the S2− adsorption, then generate more polysulfide, and therefore promote the sulphidizing flotation. However, Fe3+ ions would increase the surface potential, reduce the S2− adsorption, generate more sulfur element, and therefore inhibit the sulphidizing flotation.