The invention discloses a
copper-
molybdenum bulk concentrate flotation separation combined inhibitor and application thereof, and belongs to the technical field of
mineral flotation separation. The combined inhibitor is formed by mixing
isomaltose and
sodium hexametaphosphate. The method for using the combined inhibitor for flotation separation of the
copper-
molybdenum bulk concentrate specifically comprises the steps that the
copper-
molybdenum bulk concentrate is subjected to scrubbing,
reagent removal and pulping; a combined inhibitor, a collecting agent and a
foaming agent are sequentially added into the ore pulp, primary roughing is conducted, and roughing concentrate and roughing
tailings are obtained; the roughing concentrate is subjected to three times of concentration, a combined inhibitor is supplemented in each
time of concentration, and copper concentrate is obtained; and the roughing
tailings are subjected to two times of
scavenging, the collecting agent is supplemented in each time of
scavenging, and molybdenum concentrate is obtained. According to the method, the floatability difference of the
copper ore and the molybdenum ore is enlarged by inhibiting molybdenum and floating copper, the use of high-
toxicity agents can be reduced, meanwhile, copper can be efficiently recycled, the grade of molybdenum concentrate can be guaranteed, and good environmental compatibility and industrial application prospects are achieved.