针对陕西某微细粒磁铁矿中部分磁铁矿与极微细脉状脉石矿物互层交互嵌布、含硫高、处理难度大的特点,在工艺矿物学研究的基础上提出了原矿粗碎磁滑轮抛尾—磁选抛尾—磁粗精矿再磨浮选脱硫—浮硫尾矿磁精选联合流程。全流程试验可获得铁品位65.15%、含硫0.11%、铁回收率73.10%的铁精矿,以及硫品位25.12%、硫回收率30.67%的硫精矿。 In view of the characteristics of the intercalation of some magnetite and the very fine vein-vein vein mineral in some fine-grained magnetite in Shaanxi province, the sulfur content is high and the treatment is difficult. Based on the study of process mineralogy, Magnetic pulley throwing tail - Magnetic tailing - magnetic concentrate re - grinding flotation desulfurization - sulfur tailings magnetic separation process. Through the whole process, iron concentrate with 65.15% iron content, 0.11% sulfur content and 73.10% iron recovery, and sulfur concentrate with sulfur grade of 25.12% and sulfur recovery rate of 30.67% can be obtained through the whole process.