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vol.115 issue12The influence of water quality on the flotation performance of complex sulphide ores: Case study at Hajar Mine, Morocco author indexsubject indexarticles search
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Journal of the Southern African Institute of Mining and Metallurgy

On-line version ISSN 2411-9717
Print version ISSN 2225-6253

Abstract

PAQUOT, F.X.  and  NGULUBE, C.. Development and optimization of mixed sulphide/oxide copper ore treatment at Kansanshi. J. S. Afr. Inst. Min. Metall. [online]. 2015, vol.115, n.12, pp.1253-1258. ISSN 2411-9717.  http://dx.doi.org/10.17159/2411-9717/2015/v115n12a15.

The Kansanshi Mine (First Quantum Minerals Ltd) treats a mixed sulphide/oxide copper-gold vein deposit. Until June 2009, the sulphide and oxide minerals were respectively recovered by the well established xanthate flotation of sulphides and acid leaching of soluble oxide copper. The mixed (transitional) sulphide/oxide ores were stockpiled in the absence of an economic processing route due to their poor flotation response and high gangue acid consumption. Since June 2009, these mixed ores have been treated by flotation using controlled potential sulphidization. This paper describes the development of the process and its optimization. The effect of the complex mineralogy on the flotation performance is also depicted.

Keywords : copper flotation; mixed sulphide/oxide ore; controlled potential sulphidazition.

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