Abstract: From the preferential flotation process,iso-flotation process,mixed flotation process and other aspects,the research and application process of the normal beneficiation for copper sulfur are introduced,mainly emphasizing on the research and application of new efficient collectors and new efficient inhibitors (including the combination of inorganic inhibitors and organic inhibitors).The research and application of foaming agent was briefly introduced; The theoretical research progress of electrochemical flotation of copper sulfur was summarized.It was pointed out that the development and research of new efficient non-toxic electrochemical flotation reagent is an important developing direction of the copper sulfide ore flotation technology.

Key words: Compliex copper sulfur ore, Flotation process, Flotation reagents, Electrochemical flotation, Research progress