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a review of the beneficiation of copper-cobalt-bearing minerals in the democratic republic of congo - sciencedirect

a review of the beneficiation of copper-cobalt-bearing minerals in the democratic republic of congo - sciencedirect

Mining is increasingly taking place at depths where sulphide bodies are present, which has led to a need to reinvent beneficiation methods.Gravity separation is used either as a preconcentration step or during the extraction of rich concentrates from process tails.Sulphidisation followed by flotation is the preferred beneficiation technique for oxidised copper-cobalt ores.The integration of CPS systems into the flotation circuits can help minimise reagent overconsumption.Application of selective flotation can help a concentrator to produce separate oxide and sulphide concentrates.

Copper and cobalt (CuCo) are strategic metals for the Democratic Republic of Congo (DRC), and nearly 20% of the country's GDP is supported by their exports. At present, the country classifies itself as the leading copper producer in Africa with an output in the region of a million tonnes and possesses nearly 60% of the world's reserves of Co; a metal exclusively exported in the form of salts or semi-finished products. Concentrators play a very important role in the growth of CuCo metal production, which is needed in order to meet rapidly growing global demand and to increase government revenues through mining royalties. This article reviews the major process flow sheets and reagent suites in practice at concentrators operated in the DRC for the beneficiation of CuCo values from various ore types. The comprehensive compilation of pertinent laboratory and industrial data is intended to provide practising specialists, metallurgists, and academics conducting research on Congolese CuCo ores with a single well-detailed reference source. Emphasis is placed on froth flotation as the major technique for the beneficiation of CuCo minerals.

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