Abstract: In order to prevent the loss of sulfur and arsenic from the Pb-Zn tailings of Tin poly-metallic sulfide ores, the beneficiation tests on this tailing were carried out to comprehensively recover sulfur and arsenic. The results showed that by the process of low intensity magnetic separation-bulk flotation of sulfur and arsenic-the flotation separation of sulfur-arsenic, sulfur concentrate with S grade of 43.14%, Arsenic content of 0.56% and S recovery of 64.12%, and arsenic concentrate with arsenic grade of 12.08% and arsenic recovery of 86.79% were obtained with the high-efficient depressant Y-As during the flotation separation of sulfur and arsenic. This method can achieve the effective separation and recovery of sulfur and arsenic.

Key words: Pb-Zn tailings, Depressant Y-As, S-As separation