RESIDUAL ORE BODY RECOVERY BY IN-SITU FRAGMENTATION-LEACHING IN BEIFANG COPPER MINE

The recovery of residual low grade copper ore body in Beifang Copper Mine by in situ fragmentation-leaching process is investigated on the basis of the mineralogy study of the copper ore The penetrability and leachability of the muddy copper ore are improved by selection of appropriate leachate for sulfide and oxide copper minerals and loosening agent for muddy ore, and vacuum application to leaching, and the mud discharge measures at the bottom of the stope The results show that it is feasible in technology to recovery residual low grade copper ore body by the in situ leaching process