Flotation method for comprehensively recovering zinc oxide ore from lead-zinc sulfide ore tailings and combined inhibitor

The invention relates to a flotation method for comprehensively recovering zinc oxide ore from lead-zinc sulfide ore tailings and a combined inhibitor, and belongs to the technical field of lead-zinc oxide ore beneficiation. The flotation method comprises the steps that when flotation is conducted on the lead-zinc sulfide ore tailings, ammonium chloride, sodium sulfide and sodium carbonate are added into lead-zinc sulfide ore tailing pulp to serve as a combined inhibitor of zinc oxide ore, then a gangue mineral collecting agent is added for reverse flotation roughing, and roughing tailings and roughing concentrate are obtained; oxalic acid and hypochlorous acid are added into roughing tailings to adjust the pH value of ore pulp to 7.5-8.5, then scavenging is conducted, scavenged concentrate and zinc tailings are obtained, and the scavenged concentrate is returned to reverse flotation roughing; and a gangue mineral collecting agent is added into the roughing concentrate for concentration, and zinc concentrate