Abstract: To make a recycling of a beneficiation tailing,an optimal process and process indexes for recovering sulfur were determined based on the process mineralogical study and a series of flotation tests.The test flowsheet consisting of one roughing,one scavenging and a re-concentration of scavenging middlings adopted 300g/t butyl xanthate,60 g/t MIBC and CaO to adjust the pH value to 8.5 in the roughing,and 150 g/t butyl xanthate and 30 g/t MIBC in the scavenging,with no reagent added to the cleaning.As a result,a sulfur concentrate grading 35.95% at a recovery of 65.12% and a sulfur middling grading 20.86% at a recovery of 9.64% were obtained.

Key words: Flotation, Tailings, Sulfur, Recycling