白云鄂博氧化矿石深度还原物料分选试验研究

白云鄂博氧化矿石深度还原物料的矿物组成复杂、金属铁粒度较粗、残碳含量高，先采用磁重联合工艺流程预先脱碳，再经阶段磨矿-粗细分选流程选铁，可获得全铁品位为92.02%，金属化率为94.18%，铁回收率为93.27%的铁粉，该铁粉可作为炼钢的原料；尾矿中稀土品位15.10%，回收率97.18%，可作为分选稀土的原料。

Research on the Separation of Deoxidized Samples of Hematite Ore from Bayan Obo

After the hematite ore from Bayan Obo was deoxidized, the samples were of complex mineral composition, course metallic iron grain and high content of residual carbon. Iron powder with a TFe grade 92.02%, a metallization rate 94.18% at an iron recovery 93.27% was obtained after combined flow sheet of magnetic gravity separation followed by stage grinding-respective treatment of course and fine fractions. This powder can be used as steelmaking material. The tailings with a grade of rare earth 15.10% at a recovery 97.18% can used as material for beneficiation of rare earth.