Since the storage capacity of the tailing pond in Baolun Gold Mine is insufficient,the cyanidation process adopted is under pressure because of environmental protection challenges.According to the ore property,a joint gravity separation-flotation process is studied.During the study,joint processes are explored such as one-stage grinding gravity separation-regrinding flotation and two-stage grinding two-stage gravity-flotation,and are applied in production.The results show that the two-stage grinding two-stage gravity-flotation joint process,that is Nelson gravity separation-joint column machine flotation,replaces gravity separation-cyanidation process and achieves good gold recovery index.During the production,gold recovery rate reaches 91.53 %,the tailings meet the GradeⅠgeneral industrial solid waste standards and the national environmental protection requirement,saving 55 million yuan investment in the tailings pond at a single time,reducing annual operation cost of tailings pond by 5 million yuan,increasing tailings sale profits by 0.7 million yuan annually.The social and economic benefits are prominent.