Based on experimental research of the mineral processing technology conditions,a flotation flowsheet of depressing carbon,zinc sulfide flotation and zinc oxide flotation is developed.

In order to resolve the low selectivity problem in Pb/Zn sulphide flotation when wastewater containing cyanide is reused, flotation and absorption tests were conducted to analyse, together with the theoretically calculation of solution composition, the effects of copper concentration and pH on the reuse of water.