Method for separating molybdenite and galena through combination of gravity and flotation

The invention provides a method for separating molybdenite and galena through gravity-flotation combination, which comprises the following steps: crushing extracted raw ores of molybdenite and galena, adding water, and grinding to obtain raw ore pulp; kerosene and a foaming agent are added into the raw ore pulp for molybdenum-lead roughing, blank concentration and scavenging, and molybdenum-lead mixed rough concentrate and molybdenum-lead tailings are obtained; the molybdenum-lead mixed rough concentrate is subjected to two times of shaking table gravity separation, and lead concentrate and shaking table tailings are obtained; after the table tailings are reground, a lead inhibitor, kerosene and a foaming agent are added for one-time roughing, two-time concentration and three-time scavenging, and molybdenum rough concentrate and lead rough concentrate are obtained; the molybdenum rough concentrate is reground, a lead inhibitor is added for four times of concentration, and molybdenum concentrate is obtained; a