METHOD FOR FULL-SIZE ENHANCED SULFIDIZATION AND CLASSIFIED FLOTATION RECOVERY OF ZINC OXIDE ORE

Disclosed is a method for full-size enhanced sulfidization and classified flotation recovery of zinc oxide ore. The present invention includes the steps: crushing and grinding the zinc oxide ore, performing pulp conditioning, adding composite ammonium salt and adding copper salt; adding a sulfidizing agent into the activated ore pulp; performing coarse and fine ore grain classification; adding a cuprammonium complex into the fine-grained pulp for activation, then sequentially adding a xanthate collector and a frothing agent, and performing flotation after pulp conditioning to obtain fine-grained zinc concentrate and fine-grained flotation tailings; adding a regulator and an amine collector into the coarse-grained pulp, and performing flotation after pulp conditioning to obtain coarse-grained zinc concentrate and coarse-grained flotation tailings; combining the fine-grained zinc concentrate and the coarse-grained zinc concentrate into flotation zinc concentrate; and combining the fine-grained flotation tailings and the coarse-grained flotation tailings into flotation tailings.