Abstract: In order to obtain high quality silverlead concentrate,test on highsulfur silverleadzinc polymetallic ore by asynchronous flotationcoarse ore concentrate regrind flotation,asynchronous fast flotationmiddlings ore regrind and stagespeed asynchronous flotationzincsulfur sequential priority flotation process.The test resluts show that: under the condition that the grinding fineness is -0.074 mm 70%,stagedspeed asynchronous flotationzincsulfur sequential priority flotation is better than the other two processes.The silver lead concentrate from the flotation process has a silver grade of 621 g/t,the silver recovery rate is 54.18%,the copper grade is 0.84%,the copper recovery rate is 34.62%,the lead grade is 6278%,the lead recovery rate is 89.42%,the zinc grade is 6.45%,and the zinc recovery rate is 5.83%.

Key words: Silverleadzincsulfur ore, Priority flotation, Asynchronous flotation, Segmented speed asynchronous flotation