贵州某难选低品位褐铁矿选矿工艺试验  

Experiments on Beneficiation Process of a Refractory Low-grade Limonite of Guizhou

作　　者：杨大兵[1,2] 沈进杰[1] 鲁维[3] 唐庆华[3] 

机构地区：[1]武汉科技大学 [2]武汉理工大学 [3]首钢水城钢铁有限责任公司

出　　处：《现代矿业》2011年第9期14-16,共3页Modern Mining

摘　　要：贵州某低品位褐铁矿主要以针铁矿、菱铁矿和少量磁铁矿、黄铁矿形式存在,属于难选铁矿石,常规的磁选、浮选、磁化焙烧—弱磁选均不能获得满意的指标。试验采用氯化还原焙烧—弱磁选工艺流程处理该矿石,获得了铁精矿品位为60.96%,回收率为87.16%的良好指标,为该矿石的开发利用提供了新思路。A certain low-grade limonite in Guizhou mainly exists in goethite,siderite and minor magnetite and pyrite,which belongs to the refractory iron ore.The conventional magnetic separation,flotation,magnetic roasting-low intensity magnetic separation can not reach the satisfactory indicators.A good index with Fe concentrate grade of 60.96% and recovery of 87.16% were obtained by the process of chloride reduction roasting-low intensity magnetic separation,which provides a new idea for the development and utilization of the minerals.

关 键 词：低品位褐铁矿 氯化还原焙烧 弱磁选工艺 磁化焙烧 

分 类 号：TD951[矿业工程—选矿]