Tungsten-molybdenum-silver multi-metal ore beneficiation process

The invention provides a tungsten-molybdenum-silver multi-metal ore beneficiation process. The beneficiation process comprises the steps that (1) tungsten-molybdenum-silver multi-metal ores are crushed, grinded and floated to prepare molybdenum rough concentrates; (2) the molybdenum rough concentrates are grinded and selected to obtain molybdenum concentrates; (3) molybdenum floatation tailings are classified and reselected to obtain tungsten-silver mixed concentrates; (4) the tungsten-silver mixed concentrates are grinded; and (5) silver is floated to prepare silver concentrates and tungstenconcentrates. The beneficiation process can prevent excessive grinding and excessive crushing of molybdenite and wolframite to gradually achieve the monomer dissociation to obtain the qualified molybdenum concentrates and tungsten concentrates under the precondition of guaranteeing the recovery rate; the floatation separation is performed after preparation of the tungsten-silver mixed concentratesthrough reselection, so t