国外某弱磁性铁矿石选矿试验  

Beneficiation Experiment on a Low Intensity Magnetism Iron Ore Abroad

作　　者：赵刘闯 刘全军[1,2] 梁远琴 宋建文[1,2] 高扬[1,2] Zhao Liuchuang Liu Quanjun Liang Yuanqin Song Jianwen Gao Yang(Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming 650093, China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]复杂有色金属资源清洁利用国家重点实验室,云南昆明650093

出　　处：《金属矿山》2016年第12期86-88,共3页Metal Mine

基　　金：云南省应用基础研究计划重点项目(编号:2013FA009)

摘　　要：国外某弱磁性铁矿石铁品位为41.07%。矿石中铁金属主要存在于赤褐铁矿中,铁在赤褐铁矿中分布率为80.33%,碳酸铁、硅酸铁及磁铁矿含量较少。为给该矿石开发利用提供依据,对其可选性进行研究。结果表明:在磨矿细度为-0.074 mm占92.28%时,采用高梯度强磁选机,在脉动冲程为4 mm、冲次为180 r/min、粗选背景磁感应强度为1.0 T、磁介质为Φ2+1.5 mm聚磁介质条件下,经1粗2扫、扫选精矿合并精选流程选别,获得了铁品位为60.08%、回收率为75.94%的精矿。用不同直径介质棒组合作为高梯度磁选的聚磁介质可以提高分选指标。There is 41. 07% iron in a low intensity magnetism iron ore. Iron mainly exists in hematite-limonite ore,with distribution rate of 80. 33%,few iron carbonate,ferrosilite,magnetite. To provide technique basis for development of the ore,beneficiation experiment was conducted. Results indicated that,at the grinding fineness of-0. 074 mm 92. 28%,via high gradient high intensity magnetic separation,at pulsating stroke is 4 mm,pulsating speed of 180 r / min,background magnetic induction intensity is 1. 0 T,magnetic medium diameter is Φ2 ＋1. 5 mm,by one roughing-two scavenging,concentrate of scavenging mixed and via cleaning process,iron concentrate with iron grade of 60. 08% and recovery of 75. 94% was obtained. With different diameter rod combination as high gradient magnetic separation medium can improve the separation index.

关 键 词：赤褐铁矿 高梯度强磁选 磁介质 

分 类 号：TD951.1[矿业工程—选矿] TD924.11