A new R12-million copper elution circuit at DRDGold’s Far West Gold Recoveries (FWGR) surface retreatment operation is expected to deliver an additional 1.2 kg to 1.8 kg of gold a month that would otherwise have been lost to refining charges. FWGR, south-west of Johannesburg, is currently retreating material reclaimed from the Driefontein No.5 dam. The material reclaimed contains high levels of copper which competes with gold and co-adsorbs on to activated carbon. Copper and gold are removed from the carbon and subsequently recovered together in the electro winning process.
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