Abstract: Aiming at the magnet ore containing high sulphur (3.39%),magnetic separation cause iron concentrate containing excess sulfur,experiment study of sulfur reduction iron separation and comprehensive recovery of associated valuable components was conducted,the final recommendation flotation and magnetic separation combined process,obtained the grade of copper 13.30%,the gold grade of 4.25 g/t,silver grade is 107 g/t,copper recovery rate of 51.25% qualified copper concentrate;Qualified sulfur concentrate with sulfur grade of 29.60% and sulfur recovery rate of 79.74%;A qualified iron concentrate with 67.05% full iron grade,0.16% sulfur content and 62.00% full iron recovery; The process flow is reasonable,the sulfur content in iron concentrate can be reduced effectively by flotation,and copper and sulfur are recovered synthetically,which improves the economic value of the mine.

Key words: sulphurbearing magnetite,sulfur reduction iron separation,comprehensive recovery