Abstract: The oxide lead-zinc ore from west China is characterized by complex mineral composition, many secondary oxidized minerals and difficult beneficiation. The explorative test indicated the difficulty in zinc separation and therefore, the stress was laid on the lead separation. In light of the ore properties and mineral floatability, a gravity separation was introduced properly in the multi-stage sulfidization flotation process. As a result, a lead concentrate with a 47.66% lead grade, 3.49% zinc and 70.28% lead recovery was obtained, realizing the lead recovery from this ore.

Key words: Oxidie lead-zinc ore, Multi-stage sulfidization flotation, Gravity separation.