Abstract: Due to the characteristics of fine disseminated refractory arsenic-bearing lead-zinc ore in Hebei, beneficiation tests on selective flotation of lead and zinc under high-alkaline conditions were carried out through a lot of exploration. In the rough separation test of lead, the resultant inhibitor of sodium sulfite+zinc sulfate+JSY01 was adopted to inhibit the zinc-sulfur-arsenic minerals, and in the rough concentration of zinc, the copper sulfate was used to activate the zinc minerals. In the final separation of lead and zinc, the potassium permanganate and the lime + potassium permanganate were adopted separately to inhibit arsenopyrite. By this way, lead concentrate with grade of 75.62%, recovery of 87.63%, and arsenic content of 0.28% and zinc concentrate with grade of 45.73%, recovery of 83.51% and arsenic content of 0.44% were achieved, thus providing a basis for the design of the dressing plant.

Key words: Arsenic-bearing lead-zinc ore, Selective flotation of lead and zinc, JSY01 depressants, Potassium permanganate