Beneficiation method for molybdenite in magnesium-rich minerals

The invention relates to the technical field of beneficiation, in particular to a beneficiation method for molybdenite in magnesium-rich minerals The beneficiation method comprises the steps that crushed molybdenite raw materials are subjected to magnetic separation roughing, magnetic products obtained through roughing are subjected to graded ore grinding and then subjected to magnetic separation concentration to obtain magnetic products containing magnesium minerals, and fine-grained argillized partial minerals are removed from concentrated non-magnetic products in a grading or reselection mode; and non-magnetic products obtained after roughing are subjected to graded ore grinding and then mixed with coarse-grained products obtained after concentration and desliming, and the molybdenite is recovered through flotation. By utilizing a close intergrowth relationship between the magnesium-rich minerals and magnetic minerals, the magnesium-rich minerals such as talc are separated from target minerals by adopting