Abstract:

Aiming at the problems that the arsenic content of a gold-bearing sulfur concentrate in An⁃

hui is too high (up to 5.05%) to be sold，an arsenic-sulfur separation test was carried out. The results show

that pyrite is preferentially floated with activated carbon as de-reagent，lime as pH regulator，ZJY-7 as in⁃

hibitor，butyl xanthate as collector and 2# oil as foaming agent. The flotation tailings were ground to -0.074

mm accounting for 82.37%. After one roughing and one scavenging magnetic separation of arsenopyrite and

pyrrhotite，a marketable sulfur concentrate with sulfur content of 52.16%，arsenic content of 0.48%，gold

content of 1.86 g / t，sulfur recovery rate of 14.32%，sulfur and iron concentrate with sulfur content of

35.81%，arsenic content of 0.63%，gold content of 0.61 g/t，sulfur recovery rate of 64.08%，and gold⁃

bearing arsenic concentrate with arsenic content of 16.46%，gold content of 8.14 g/t，arsenic recovery rate

of 91.25%，gold recovery rate of 80.22%，and total sulfur recovery rate of 78.40% were obtained. The test

results can provide reference for the treatment of high arsenic gold-bearing sulfur concentrate in similar

mines.

Key words:

arsenic, sulfur, flotation, magnetic separation, ZJY-7 inhibitor