Abstract: Sulfur content are much higher in a tailings from copper processing, the main sulfide are magnetopyrite, pyrite and so on, for floatability was inhibited during copper separation operation, so condition tests were done on activator and collector of sulfide minerals flotation as the key point, finally confirmed one roughing one cleaning one scavenging, middlings order return process to handle the tailings from copper processing of sulfur content 2.46%, sulfur concentrate with sulfur grade 35.04% and recovery rate 83.90% could be obtained.

Key words: Pyrrhotite, Activator, Combined collectors