Dec 20, 2019 · mining biological leaching of copper ores. Heap Leach Of Magnesium Carbonate Copper Ores Prevent permeability loss in heap leaching. An alkaline sodium carbonatebicarbonate lead solution of ph and a sulfuric acid leach solution of ph 2 were used to leach the uranium ores. the acid solution was also used to leach the copper ore. the permeability loss in the uranium ore sampleheap leach .