高硅鲕状赤铁矿阶段磨矿阶段磁选提铁降硅试验  

Experiment on Stage Grinding Stage Magnetic Separation of Iron Increase and Silicon Decrease of the Oolitic Hematite Ore with High Silica

作　　者：王社光 涂光富 Wang Sheguang;Tu Guangfu(Zhongguan Iron Mine of Hegang Mining Company)

机构地区：[1]河钢矿业公司中关铁矿

出　　处：《现代矿业》2019年第8期127-128,143,共3页Modern Mining

摘　　要：中东某鲕状赤铁矿石铁品位为47.44%,铁主要以磁性铁的形式存在,铁在磁性铁中分布率为60.26%.为给该矿石开发利用提供依据,采用阶段磨矿阶段磁选的方法进行了试验研究.结果表明:一段磨矿细度-0.074mm含量80.8%,一段磁选磁场强度0.12T,二段磨矿细度-0.074mm含量93.3%,二段磁选磁场强度0.8T,三段磨矿细度-0.074mm含量95.2%,三段磁选磁场强度0.4T,可以得到铁品位61.02%、回收率53.25%的精矿.有效实现了铁与杂质矿物的分离与富集.There is 47.44%iron in an oolitic hematite from the Middle East.Iron mainly exist in form of magnetite,distribution rate of iron in magnetite is 60.26%.To provide technique basis for development and utilization of the ore,stage grinding stage magnetic separation process was conducted in the experiment.The result shows that at the first stage grinding fineness of 80.8%passing 0.074 mm,first magnetic separation magnetic field intensity of 0.12 T,second stage grinding fineness of 93.3%passing 0.074 mm,second magnetic separation magnetic field intensity of 0.8 T,third stage grinding fineness of 95.2%passing 0.074 mm,third magnetic separation magnetic field intensity of 0.4 T,iron concentrate with iron grade of 61.02%and recovery of 53.25%was obtained.The separation and enrichment of iron and impurity minerals can be effectively realized.

关 键 词：鲕状赤铁矿 磁性铁 磁选 

分 类 号：TD951[矿业工程—选矿]