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South Africa host massive deposits of Platinum Group Metals (PGMs) in the Igneous Bushveld Complex. These deposits have been mined for a long time and in the process Mine sludge has been produced. It has been piled up and there is need to recover PGMs locked in it. The conventional way of processing PGMs has proved to be very difficult due to ultra-fines in the sludge that causes major loses during flotation. An alternative hydrometallurgical process for recovery of PGMs from a mine sludge by leaching using a mixt...