Hemijska industrija 2015 Volume 69, Issue 5, Pages: 453-458
https://doi.org/10.2298/HEMIND140509061S
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Acid leaching of oxide-sulphide copper ore prior the flotation: A way for an increased metal recovery
Sokić Miroslav D. 
(Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade)
Milošević Vladan D. (Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade)
Stanković Velizar D. (Technical Faculty, Bor)
Matković Vladislav Lj. (Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade)
Marković Branislav R. (Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade)
Copper mine "Cerovo"- East Serbia as well as the other ore bodies in its
vicinity contain a significant amount of oxide copper minerals in their uper
layers (>40%). Processing of such mixed ores by the existing concentration
technologies leads to a substantial copper losses (<60%). Reduction of "oxide
copper", by acid leaching prior the flotation concentration, can increase the
overall copper efficiency up to more than 70% in the single-stage leaching,
achieving an efficiency in the flotation concentration stage higher than 75%.
Based on the performed experimental results the flow sheet for processing of
the mixed oxide-sulphide copper ore is proposed.
Keywords: Oxide-sulphide copper ore, leaching, flotation, increase of copper recovery