Abstract: With the decrease of lead-zinc sulfide ore resources， more and more attention has been paid to efficient utilization of oxidized lead-zinc ore. The separation of oxidized lead-zinc ore is difficult and the recovery rate is poor. In order to promote the progress of the process and exploitation utilization technology of oxidized lead-zinc ore， the research status was summarized after referring to a large number of relevant literatures. The flotation process， the gravity（magnetic） separation-floating combined process and the floatation-metallurgy combined process was emphatically introduced. The gravity（magnetic）separation-floating combined process and floating- metallurgy combined process need higher requirements for production conditions， which makes the production cost large and is not suitable for large-scale industrial production. Sulfide flotation is a widely used method in industry and the most promising technology in lead-zinc oxidized ore flotation. However， a lot of problems need to be solved urgently， such as slow reaction rate， easy cast-off sulfide film， inhibition effect of excessive sulfide on flotation and so on. As the developing direction in the future， sulfuration process can be carried out during grinding process instead of flotation process or take the use of slow-release sulfide reagents and sulfur-containing compounds with low solubility.

Key words: Oxidized lead-zinc ore, Direct flotation, Sulfide flotation, Flotation-metallurgy combination