Experimental Research on Mineral Processing Technology for Separating a Cu-Au Ore

The beneficiability test on the Cu-Au ore containing 3.03g/t Au and 3.52%Cu determines the scheme that gravity separation is adopted to recover coarse gold and for tailings the flotation of copper sulphide is adopted firstly and then the flotation of copper oxide.As a result,the product of coarse gold contains 915.5g/t with the recovery of 12.96%.At the grinding fineness of 90.44% passing 200 mesh,the copper sulphide concentrate of 27.23%Cu with a recovery of 54.85% and the copper oxide concentrate of 33.17%Cu with a recovery of 26.20% are obtained respectively.The total recovery of copper reaches 81.05% and the tailings only contain 0.74%Cu.Most of the gold in the tailings is into the copper sulphide concentrate containing 31.25g/t Au with the recovery of 73.12% and the total recovery of gold reaches 91.80%.