鄂西某鲕状赤铁矿焙烧磁选试验研究  

Experimental Study on the Beneficiation of an Oolite Iron Ore from Western Hubei by Roasting-Magnetic Separation

作　　者：左倩[1] 王一[1] 田赋[1] 杨默涵[1] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室

出　　处：《金属矿山》2008年第8期36-39,共4页Metal Mine

基　　金：武汉科技大学大学生科技创新活动项目

摘　　要：为开发利用鄂西某宁乡式鲕状赤铁矿(原矿铁品位为43.71%,P含量为0.93%),对其进行了磁化焙烧—弱磁选小型试验。试验结果表明:将-2 mm原矿与煤粉按5∶1的质量比混合,在焙烧温度为750℃,保温时间为1 h的条件下焙烧,焙烧矿经过粗粒弱磁选抛尾、细磨至-325目占96%、两次弱磁精选,可获得平均铁品位为60.12%、平均铁回收率(对原矿+煤粉)为77.42%的铁精矿。但铁精矿含磷0.62%,须通过进一步研究使其降低。To exploit and utilize an oolite hematite ore of Ningxiang type in western Hubei, a laboratory test of magnetizing roasting-low intensity magnetic separation was carried out for the run-of-mine ore containing 43. 71% Fe and 0.93% P. The test result shows that when the - 2 mm run-of-mine ore is blended with coal powder in a ratio of five to one, roasted at a temperature of 750℃ for one hour, treated by low intensity magnetic separation at coarse size to discard the tailings, finely ground to 96% -325 mesh and handled by two cleanings of low intensity magnetic separation, an iron concentrate with an average grade of 60.12% and iron recovery （ to run-of-mine ore ＋ coal powder） of 77.42% can be obtained. However, the iron concentrate contains 0.62% P, which should be reduced through further study.

关 键 词：鲕状赤铁矿 磁化焙烧 弱磁选 

分 类 号：TD926.4[矿业工程—选矿] TQ624[化学工程—精细化工]