A Multistage sulphidisation flotation procedure for a low grade malachite copper ore

Tebogo P. Phetla, Edison Muzenda

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Abstract

This study was carried out to develop a flotation procedure for an oxide copper ore from a Region in Central Africa for producing an 18% copper concentrate for downstream processing at maximum recovery from a 4% copper feed grade. The copper recoveries achieved from the test work were less than 50% despite changes in reagent conditions (multistage sulphidisation, use of RCA emulsion and mixture, use of AM 2, etc). The poor recoveries were attributed to the mineralogy of the ore from which copper silicates accounted for approximately 70% (mass) of the copper minerals in the ore. These can be complex and difficult to float using conventional flotation methods. Best results were obtained using basic sulphidisation procedures, a high flotation temperature and extended flotation residence time.

Original languageEnglish
Pages (from-to)255-261
Number of pages7
JournalWorld Academy of Science, Engineering and Technology
Volume70
Publication statusPublished - Sep 1 2010

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

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