Abstract: The secondary sulfur enrichment being the striking features of the mineral ore to be processed, a new dressing technology including faster precedence, copper-sulphur mixed flotation, and selective re-grinded coppersulphur separation out of middlings, is adopted. The following are the closed-circuit test results: copper concentrate grade is 25.38%; copper recovery rate is 82.42%;sulfur concentrate grade is 31.64%; sulphur recovery rate is 60.59%.