摘要
采用"预富集-磁化焙烧-磁选工艺"对某赤铁矿尾矿进行了选别试验研究。在一段磨矿细度-0.074 mm粒级含量90%,二段磨矿细度-0.025 mm粒级含量90%条件下,获得了精矿品位65.82%、产率9.63%、金属回收率55.21%、尾矿品位5.69%的选别指标,实现了对赤铁矿尾矿中铁矿物的有效回收。
Experimental study was carried out to beneficiate hematite tailings adopting a preconcentration-magnetization roasting-magnetic separation process. The sample was separated when grinded to a fineness of -0.074 mm 90% for the first stage of grinding and a fineness of -0.025 mm 90% for the second stage of grinding. An iron concentrate with Fe grade of 65.82%, yield of 9.63% and recovery of 55.21% was obtained, while the Fe grade of the tailings was reduced to 5.69%. With this approach, the iron minerals were effectively collected from the hematite tailings.
引文
[1] 韩跃新,孙永升,李艳军,等.我国铁矿选矿技术最新进展[J].金属矿山,2015(2):1-11.
[2] 解琳.国外某褐铁矿预洗矿-磁化焙烧-弱磁选工艺研究[J].矿冶工程,2018,38(2):51-54.
[3] 韩跃新,高鹏,李艳军,等.我国铁矿资源“劣质能用、优质优用”发展战略研究[J].金属矿山,2016(12):2-6.
[4] 秦彩霞,秦丽娜.国外某高铝赤褐铁矿选矿试验研究[J].矿冶工程,2017,37(6):57-59.
[5] 袁帅,韩跃新,高鹏,等.难选铁矿石悬浮磁化焙烧技术研究现状及进展[J].金属矿山,2016(12):9-12.
[6] 王建英,张新龙,张铁柱.固阳褐铁矿磁化焙烧-磁选扩大实验研究[J].矿冶工程,2017,37(4):82-85.