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A Multistage Sulphidisation Flotation Procedure for a Low Grade Malachite Copper Ore
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.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1077972Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 5321
 A. F. Mulaba and D.T. Bell, "Some aspects of laboratory flotation of Copper-Co minerals from mixed oxide ores," The South African IMM, in Proc. 3rd Southern African conf. Base Metals . 2005, pp. 191-200.
 K. Lee, D. Archibald, J. McLean, and M.A. Reuter," Flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors," Minerals Engineering , vol. 22, issue. 4, pp. 395-401, 2009.
 D. W. Fuerstenau and M.C. Fuerstenau, "Principle of flotation: The flotation of oxide and silicate minerals," South African Institute of Mining and Metallurgy Monograph, Johannesburg Series no.3,1982, pp.109, 1982.
 D. W. Fuerstenau, "Principles of flotation: Mineral-Water interfaces and the electrical double layer," South African Institute of Mining and Metallurgy Monograph, Johannesburg Series no.3, pp.17, 1982.
 P. J. Harris, "Principles of flotation: Mineral-Water interfaces and the electrical double layer," South African Institute of Mining and Metallurgy Monograph, Johannesburg Series no.3, pp.237, 1982.
 T. C. Hughes, "AM-2 A hydroxamate flotation collector reagent for oxides and oxide mineral systems," Australian Journal of Mining, pp. 58-59, July/August 2005.
 M. Ray, "Memoirs of milling and process metallurgy: flotation of oxidized ores," Transactions of the Institute of Mining and metallurgy, vol. 88, C125-250, 1979.
 M. H. Jones, J. T. Woodcock, "Optimisation and control of laboratory sulphidisation of oxidized copper ore with an ion selevtive electrode," in Proc. Australasian Institute of Mining and Metallurgy, vol. 266, pp. 11- 19, 1978.
 D.R. Nagaraj, "The chemistry and application of chelating or complexing agents in mineral separations," in Reagents in Mineral Technology, P. Somasundaran, B.M. Moudgil, Ed. Marcel Dekker, New York, 1987, pp. 257-334.
 T. Deng, and J. Chen, "Treatment of oxidised copper ores with emphasis on refractory ores," Mineral Process Extraction Metallurgy. Rev. 7, pp. 175-207, 1991.
 J. S. Lee, D.R. Nagaraj, and J. E Coe, "Practical aspects of oxide copper recovery with alkyl hydroxamates," Minerals Engineering, vol. 11, issue 10, pp. 929-939, 1998.
 V. M. Lovell, "Principles of flotaion: Industrial flotation reagents" South African Institute of Mining and Metallurgy Monograph, Johannesburg Series no.3, pp. 81, 1982.
 L. Evrard, and J. De Copperyper, "Flotation of copper-cobalt oxide ore with alkylhydroxamates," Catholic University of Louvain, Belgium, 1975.
 S. Prasad and B. D. Pandey, "Alternative processes for treatment of chalcopyrite-a review," Minerals Engineering, vol. 11, series 8, pp. 763-781, 1998.
 I. J. De Cuyper, "Flotation of copper", Ore dressing committee on the GDMB-general, Hague (The Netherlands), September 1976.
 N. L. Weiss, SME Mineral Processing Handbook, AIME, 1985, vol. 1, Chap. 5, pp. 7-13.
 R. Singh, K. Das, and T. Sankar, "Studies to impove the flotation recovery in the benefication of a complex mixed sulphide-oxide ore from Malanjkhand," India.Tata Research development & Design centre , Pune, India, 1995.
 F. Bodwish, and T. P. Chen, "Studies on the flotation of chrysocolla," American institute of Mining, Metallurgical and Petroleum Engineers, New York, February 1962.
 A. Weiss, "World Mining and Metals Technology" Amer. Ins. Mining, Metallurgical and Petroleum Engineers; NY & Japan, 1976
[Proc. Joint MMIJ - AIME, meeting, Denver, Colo, USA, September 1976].
 S. D. Bulatovic, Handbook of flotation reagents: Chemistry, Theory and Practice: Flotation of Sulfide Ores. Elservier Science, 2007.