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For a long time in the Democratic Republic of Congo, the mining of ores for the production of copper cathodes and salts of cobalt was mostly conducted in the near-surface oxidized mineralization of the Congo Copperbelt. An important part of this mineralization is found in geological settings where copper and cobalt mainly exist as mixtures of oxides and sulfides. With the depletion of surface-rich minerals, mining is taking place at depths where sulfide minerals are prevalent. Using current technologies, the hydrometallurgical processing of ores with high levels of sulfide minerals results in poor metal recovery due to their retention in process wastes. These mineral wastes have the propensity to lead to Acid Mine Drainage (AMD) when exposed to rainfall and atmospheric air. Therefore, major changes in the technologies implemented will be needed in order to guarantee higher process efficiencies while endeavoring to uphold environment safeguarding reinforcement. This work aimed to demonstrate the urgency of updating the hydrometallurgical technologies implemented for the processing of copper-cobalt ores with an emphasis put on minimizing the environmental footprint of process wastes. Four copper-cobalt deposits and downstream hydrometallurgical processes were surveyed to get a better understanding of how changes in mineralization occurring in the deposits will influence the processing technologies and practices during the management of process wastes.
Wydawca
Czasopismo
Rocznik
Tom
Strony
96--114
Opis fizyczny
Bibliogr. 70 poz.
Twórcy
autor
- Inorganic Chemistry Unit, Department of Chemistry, Faculty of the Sciences, University of Lubumbashi, Likasi Avenue, PO BOX 1825, City of Lubumbashi, Haut-Katanga Province, Democratic Republic of Congo
autor
- Minerals Engineering and Environmental Research Unit, Department of Industrial Chemistry, Faculty of Applied Sciences, University of Lubumbashi, Kasapa Road, PO Box 1825, City of Lubumbashi, Haut-Katanga Province, Democratic Republic of Congo
autor
- Department of Metallurgy, University of Johannesburg, Doornfontein Campus, PO Box 17911, Johannesburg, 2028, South Africa
autor
- Economic Geology Unit, Department of Geology, Faculty of the Sciences, University of Lubumbashi, Kasapa Road, PO Box 1825, City of Lubumbashi, Haut-Katanga Province, Democratic Republic of Congo
- Department of Exploration Geology, Tenke Fungurume Mining S.A., Airport Road, TFM Building, Lubumbashi, Haut-Katanga province, Democratic Republic of Congo
autor
- Department of Chemistry and Metallurgy, Research Centre of Minerals Processing, Higher School of Applied Techniques in Lubumbashi, Haut-Katanga Province, Democratic Republic of Congo
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