Separation method of lead-zinc sulphide minerals

The invention discloses a separation method of lead-zinc sulphide minerals, which belongs to the technical field of mineral dressing. The separation method utilizes crude ore of the lead-zinc sulphide minerals as raw materials and includes steps of performing flotation separation for the crude ore of the lead-zinc sulphide minerals to obtain lead concentrates or obtain lead concentrates and zinc concentrates, and water-soluble thiol acetate or thioglycolic acid is added to be utilized as an inhibitor of the zinc sulphide minerals in separation minerals. Because the water-soluble thiol acetate or thioglycolic acid which is utilized as the inhibitor of the lead-zinc sulphide minerals has advantages of fine selectivity, strong inhibition capacity, low usage, convenient adding and the like, the water-soluble thiol acetate or thioglycolic acid not only can inhibit the zinc sulphide minerals well, but also can achieve better flotation effect. Simultaneously, the water-soluble thiol acetate or thioglycolic acid is low in environment influence and does not pollute environments, thereby improving production conditions well and overcoming the shortage that high common agent usage pollutes and damages the environment.