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Research Advances in Applications of Oxidants in Oxidation Leaching of Chalcopyrite

  • Guocai TIAN Junxian HU Futing ZI
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  • 1. State Key Lab of Complex Nonferrous Metal Resource Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China; 2. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;
    3. Faculty of Science, Kunming University of Science and Technology, Kunming, Yunnan 650500, China

Received date: 2016-12-06

  Revised date: 2017-01-07

  Online published: 2017-08-16

Abstract

The research progress of chalcopyrite leaching at ambient temperature and atmospheric pressure with various oxidants such as Fe3+, H2O2, Cr2O7 2?, NaClO3, KMnO4, Na2S2O8, O3 and NaNO3 were summarized. The advantages and disadvantages of oxidants and leaching system for leaching chalcopyrite and leaching mechanisms were analyzed and summarized. It was found that O3 would be the best oxidant for oxidation leaching of chalcopyrite in acid leaching medium, due to its high oxidation potential and no other by-products or impurities generated except water during leaching process. The addition of polar organic solvents in the acidic leaching system can significantly improve the leaching rate of Cu, restrain the leaching of iron and benefit for purification of the leaching solution. As a designable green solvent with good selectivity and easy recycling, ionic liquid can greatly shorten the chalcopyrite leaching time and obviously improve the leaching rates of Cu, which was expected to develop a green technology for hydrometallurgy of chalcopyrite.

Cite this article

Guocai TIAN Junxian HU Futing ZI . Research Advances in Applications of Oxidants in Oxidation Leaching of Chalcopyrite[J]. The Chinese Journal of Process Engineering, 2017 , 17(4) : 664 -676 . DOI: 10.12034/j.issn.1009-606X.216368

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