难选赤褐铁矿焙烧-磁选探索性试验研究

摘要

In this paper, tests of mineral processing were finished on the ref ractory hematite limonite of Shanxi with iron content about 24. 05%, rate of magnetism (FeO/ Tfe) about 0. 6%. Grindability and tech-nique of mineralogy of this iron ore were described. The major study was put attention on efficiency of magnetic separation at high intensity and reducing roasting-magnetic separation. Tests of reducing roasting-magnetic separation could attained good results as: concentrate iron grade be about to 58%, recovery of iron above 60%.%对某含铁品位为24.05％、磁性率(FeO/ TFe)为0.6％的难选赤褐铁矿矿石进行了选矿试验研究.考查了该矿石的矿物工艺学和磨矿特性,重点研究了还原焙烧-磁选分选情况.确定还原焙烧-磁选可以获得较好的选别指标为:精矿铁品位达58％以上,铁回收率60％以上.