Selective Flotation of Elemental Sulfur from Pressure Acid Leaching Residue of Zinc Sulfide

An efficient flotation process was developed to selectively recover elemental sulfur from a high-sulfur pressure acid leaching residue of zinc sulfide concentrate. The mineralogy analysis showed that the content reached 46.21%, and 81.97% existed as which major mineral in primarily pellet aggregate biconical euhedral crystal. concentrate product with 99.9% recovery 83.46% purity obtained using one-time blank rougher, two-time agent-added roughers, cleaners Z-200 collector Na2S + ZnSO4 Na2SO3 depressant. experiment return water indicated cycle use had no adverse effect on performance sulfur. manifested main minerals directionally went into products. Most entered while other almost completely tailing. Main valuable elements lead, zinc, silver tailing sulfides could be recovered by lead smelting. proposed can realize comprehensive components thus it has wide industrial application prospect.