Research on Au-Bearing Copper Ore in Flotation from Yunnan

In this study, the main aims were to recovery copper from Au-bearing Copper Ore by flotation. The main mineral is copper with 1.18% Cu and 0.75g/t Au. Same chalcopyrite in fine parts is encapsulated in gangue minerals, and some copper minerals exist as the intergrowth with pyrrhotite and pyrite. After study, the suitable mineral combined processing flowsheet of mixed flotation-copper sulphur separation with stage grinding and stage separation which consisting of one rougher-five concentrate-four scavenging flotation and highly efficient collector YL-3 developed independently,which has not only good selectivity for collecting copper, but also can increase Au recovery have been defined. Under such a condition, the grade of Cu is 13.05% and the recovery of 84.94% with Au 5.96g/t and 60.23% recovery is obtained, which has a better effect.