2014•Hemijska industrijaOpen access

Acid leaching of oxide-sulphide copper ore prior the flotation: A way for an increased metal recovery

Miroslav Sokić, Vladan Milošević, Velizar Stanković, Vladislav Matković, Branislav Marković

Abstract

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.

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Key concepts: Copper, Leaching (pedology), Metallurgy, Oxide, Copper ore, Copper oxide, Copper extraction techniques, Metal