In response to the issue of resource waste caused by the inability to recover and utilize microfine low-grade gold in the sulfur separation operation process of cyanide tailings in a gold production enterprise,a systematic experimental study was conducted.Based on the existing sulfur separation system,cyanide tailings and sulfur concentrate were used as experimental objects to test the gold recovery conditions of the technical scheme,forming a technical scheme for producing high-grade gold and sulfur concentrate and low-grade gold and sulfur concentrate through the enrichment of cyanide tailings by the existing sulfur separation system and further classification with a hydrocyclone.The scheme has the advantages of low cost and easy implementation for industrialization.After on-site transformation,two products were produced:high-grade gold and sulfur concentrate with a gold grade greater than 3.0 g/t and a sulfur grade greater than 46.5 %,and low-grade gold and sulfur concentrate with a sulfur grade greater than 46.5 %,which maximized the economic benefits.