Abstract: The Cu and S in a copper sulphide ore with pyrrhotite which is located in Inner Mongolia are difficult to be comprehensive recovered because of rising sulfur.Carried out the comprehensive recovery and technical condition research. The results show that, when the bulk concentrated is reground to 75% -74 μm, use QP-03 as collectors ,X activator as activator of gangue and then treated by once roughing twice cleanings and once scavenging flowsheet for Cu, once roughing once cleaning and once scavenging flowsheet for S, middling product returned in the order, the copper concentrate of Cu 20.81%、S 38.81%with a recovery of 92.97% and the sulphur concentrate of S 34.37% 、Cu 0.34%with a recovery of 52.49% are obtained.

Key words: Pyrrhotite, Chalcopyrite, Selective flotation