关键词: 高硫氰化尾渣, 还原焙烧, 脱硫, 磁选

Abstract: Experimental research on the reduction roasting and synchronous desulfurization for recovering iron from a high sulfur cyanide tailing with iron grade of 43.15% and sulfur content of 1.97% in Jiangxi Province was tested.The results indicated that the optimum parameters were proposed as follows：the mass ratio of the cyanide tailing，the bituminous coal，and desulfurizer BK of 100∶20∶16，the reduction temperature of 1 150 ℃，the roasting time of 45 min.The direct reduction iron with productivity of 42.71%，iron grade of 92.05%，sulfur content of 0.04%，phosphorus content of 0.04%，and iron recovery rate of 91.11% was obtained through the process of two-stage grinding and magnetic separation for the reduction roasting products.It provides a new way for the utilization of the high sulfur cyanide tailing.

Key words: High sulfur cyanide tailing, Reduction roasting, Desulfurization, Magnetic separation