云南省允沟混合型铁矿选矿试验研究  

MINERAL PROCESSING STUDY ON THE YUNGOU MIXED-TYPE IRON ORE IN YUNNAN PROVINCE

作　　者：王万平[1] 刘四清[1] 张敏[1] 李秀娟[1] 

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《矿冶》2014年第3期28-32,共5页Mining And Metallurgy

摘　　要：云南省允沟铁矿属于混合铁矿石类型,原矿铁品位为43.44%,主要以磁铁矿和赤、褐铁矿的形式存在。有害元素硫、磷、砷含量较低,对矿石的利用不造成影响。通过对该矿石原矿性质的研究,在磨矿细度为-0.074 mm占80%的条件下,采用弱磁选一强磁选,可以获得品位61.55%、铁回收率为85%的铁精矿;适度增加磨矿细度可以获得品位更高的铁精矿。The iron ore in Yunnan province belongs to mixed-type iron ore containing 43.44% Fe, iron in the ore occurring mainly in form of magnetite, hematite or limonite. The content of detrimental elements such as S, P and As, are relatively low, which has no impact on the utilization of the ore. Through study on the mineralogy, a process of low intensity magnetic separation followed by high intensity magnetic separation at the grinding fineness of 80% -0. 074mm is proposed, from which an iron concentrate assaying 61.55% Fe can be obtained at the recovery of 85%. A concentrate with higher grade can be achieved by properly increasing the grinding fineness to some ex- tent.

关 键 词：混合铁矿 弱磁选 强磁选 重选 

分 类 号：TD951.1[矿业工程—选矿]