难选赤褐铁矿焙烧-磁选探索性试验研究

    Experimental study on magnetic roasting-separation of refractory hematite limonite

    • 摘要: 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。

       

      Abstract: 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%.

       

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