Pretreatment-magnetic-flotation combined beneficiation process for separating copper and molybdenum from concentrate containing molybdenum and copper

The invention discloses a pretreatment-magnetic-flotation combined beneficiation process for separating copper and molybdenum from concentrate containing the molybdenum and the copper. The process adopts the concentrate which is obtained after flotation as a raw material and contains the molybdenum and the copper, and comprises the following steps that grading pretreatment is carried out on the concentrate containing the molybdenum and the copper by adopting a two-stage series cyclone to obtain overflow and mixed grit; copper-molybdenum magnetic separation is carried out after the mixed grit is subjected to water adding and size mixing to obtain magnetic separation concentrate and magnetic separation tailings; and after the magnetic separation tailings is subjected to thickening and size mixing, copper-molybdenum flotation separation is carried out to obtain the molybdenum concentrate and the copper concentrate. According to the pretreatment-magnetic-flotation combined beneficiation process, fine silt and par