Abstract
The most commonly used route in the hydrometallurgical extraction of zinc and copper from a sulphide ore is the concentrate-roast-leach-electro winning process. In the present investigation a zinc-copper ore from the Maranda mine, located in the Murchison Greenstone Belt, South Africa, containing sphalerite (ZnS) and chalcopyrite (CuFeS2), was studied. The 57Fe-Mössbauer spectrum of the concentrate yielded pyrite, chalcopyrite and clinochlore, consistent with XRD data. Optimal roasting conditions were found to be 900°C for 3 h and the calcine produced contained according to X-ray diffractometry equal amounts of franklinite (ZnFe2O4) and zinc oxide (ZnO) and half the amount of willemite (Zn2SiO4). The Mössbauer spectrum showed predominantly franklinite (59%), hematite (6%) and other Zn- or Cu-depleted ferrites (35%). The latter could not be detected by XRD analyses as peak overlapping with other species occurred. Leaching was done with HCl, H2SO4 and HNO3, to determine which process would result in maximum recovery of Zn and Cu. More than 80% of both were recovered by using either one of the three techniques. From the residue of the leaching, the Fe-compounds were precipitated and <1% of the Zn and Cu was not recovered.
From January 2005 the Technikon Witwatersrand (TWR) will complete the merger with the Rand Afrikaanse Universiteit (RAU) to form the University of Johannesburg (UJ).
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References
Hammerbeck E. C. I. and Mehliss A. T. M., In: Ore Deposits of the Republic of South Africa (eds.), Department of Mining and the Geological Survey of South Africa, The Government Printer, Pretoria, South Africa, 1976, pp. 461.
Habashi F., Textbook of Hydrometallurgy, Metallurgie Extractive Quebec, Quebec, Canada, 1999, p. 739.
Ozberk E. and Minto R., Proceedings: Iron Control in Hydrometallurgy Symposium, Toronto, Canada, 1986, pp. 12–54.
Stein J. Y. and Spink D. R., Hydrometallurgy 41 (1990), 156–161.
van Niekerk C. J. and Begley C. C., J. S. Afr. Inst. Min. Metall. 91 (1991), 233–248.
Laksham Y., Rathie V. I. N. and Monzyk B., Iron Control and Disposal (1992), 357–364.
Chen T. T. and Cabri L. J., Can. Inst. Min. Metall. (1993), 23.
Junea J. M., Singh S. and Bose D. K., Hydrometallurgy 41 (1996), 201–209.
Lenahan W. C. and de Murray-Smith R., Assay and Analytical Practice in the South African Mining Industry, 1986, 156–160.
Stevens J. G., Khasanov A. M., Miller J. W., Pollak H. and Li Z., In: Mössbauer Mineral Handbook, (eds.), Mössbauer Effect Data Centre, University of North Carolina, Asheville, USA, 1998, p. 527.
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© 2005 Springer
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Mulaba-Bafubiandi, A.F., Waanders, F.B. (2005). Hydrometallurgical Extraction of Zinc and Copper — A 57Fe-Mössbauer and XRD Approach. In: Mercader, R.C., Gancedo, J.R., Cabral Prieto, A., Baggio-Saitovitch, E. (eds) LACAME 2004. Springer, Berlin, Heidelberg . https://doi.org/10.1007/3-540-28960-7_4
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DOI: https://doi.org/10.1007/3-540-28960-7_4
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