Abstract: In order to provide technical basis for development and utilization of a sulfide lead-zinc ore from Danzhai county，selective flotation tests of lead floating first and then zinc were conducted based on the process mineralogy of the ore. The results showed that，lead concentrate with Pb grade and recovery of 48.72% and 89.21% respectively，containing 4.95% zinc，and zinc concentrate with Zn grade and recovery of 45.89% and 82.42% respectively，containing 0.72% lead，were achieved at the grinding fineness of 80% passing -0.074 mm，and CaO，Na₂SO₃+ZnSO₄，ethyl thiocarbamate + ammonium butylaerofloat and 2# oil dosage of 2 500 g/t，1 500+1 000 g/t，10+10 g/t and 18 g/t respectively for lead rough flotation，CuSO₄ and butyl xanthate dosage of 600 g/t and 130 g/t respectively for zinc rough flotation，by process of one-stage roughing，one-stage cleaning and one-stage scavenging for lead flotation，one-stage roughing，one-stage cleaning and two-stage scavenging for zinc flotation，and middles back to the flow-sheet in turn.

Key words: Sulfide lead-zinc ore, Lead flotation and zinc suppression, Selective flotation