Abstract: There are some valuable minerals as lead，zinc，gold and silver in a cyanide gangue residue，where silver concentrate is pre-treated from leaching-cyanide gold and silver being intensified as alkaline at normal temperature and pressure.The main metallic minerals are pyrite，galena，sphalerite and arsenic pyrite，and there is a little silver mineral.The size of gangue residue is very fine，and there is lot of mud in gangue residue，lead and zinc mineral is oxidated very much，and recovering of aim mineral is effected.The lead is not enriched by flotation，and the index of grade of zinc concentrate being 55.62%,recovery of zinc being 66.15%，grade of gold and silver being 66.94 g/t and 538.9 g/t，recovery of gold and silver being 47.96% and 25.67% in zinc concentrate.

Key words: Cyanide gangue residue, Lead ore, Zinc ore, Flotation