Mining Process Konkola Copper Mines PlcThe main refinery at Nkana uses electrolysis to process copper anodes to LME A grade copper cathodes It has been expanded to accommodate the increased anode production from the Nchanga smelter The Nchanga Tailings Leach Plant TLP one of the largest of its kind in the world processes tailings from the Nchanga concentrators and stockpiled tailings to produce copper