Industrial production method for reinforced recovery of molybdenum from micro-fine particle copper-molybdenum bulk concentrate

The invention relates to an industrial production method for reinforced recovery of molybdenum from micro-fine-particle copper-molybdenum bulk concentrate, and belongs to the technical field of copper-molybdenum ore flotation. Scavenging tailings obtained from the copper-molybdenum bulk concentrate with high micro-fine-particle ore content and treated through a one-roughing-one-scavenging-four-concentration process are used as treatment objects, and according to the characteristics of the scavenging tailings, the concentration of the copper-molybdenum bulk concentrate is reduced, and the recovery rate of the copper-molybdenum bulk concentrate is increased. The method comprises the following steps: grading scavenging tailings, and then carrying out flotation on micro-fine-particle-grade ore pulp obtained after grading: (1) adding a dispersing agent, a selective flocculating agent, a copper inhibitor and a molybdenum collecting agent for flotation; (2) flotation concentrate is returned for roughing, and flotati