Abstract: There is 17.55% lead in lead-silver residues made from a zinc sulfide concentrate of a smelting plant in Guangdong via oxygen pressure acid leaching and sulfur flotation process，89.74% of the lead exists in form of lead sulfate.Lead is fine disseminated in lead-silver residues，98.18% distributed in -40 μm fraction.In order to recover the valuable metal lead in lead-silver residues，beneficiation experiments were conducted.The results showed that after treated by running water，using lime as a pH adjusting agent，sodium silicate as gangue inhibitors，CSY for the collector，alcohol oil as a foaming agent，through the flotation process of one roughing-three cleaning-two scavenging，lead concentrate with lead grade of 50.28% and recovery 82.42% was obtained.Good beneficiation test results had been obtained，which provide technique basis for reasonably use of the lead-silver residues.

Key words: Lead-silver residues, Pretreatment by washing, Lead, Silver, Flotation