某微细粒赤褐铁矿选矿试验研究  

Beneficiation Study of a Micro-fine Hem-limonite Ore

作　　者：李俊宁[1,2,3] 袁启东[1,2,3] 陈洲[1,2,3] 

机构地区：[1]中钢集团马鞍山矿山研究院有限公司,马鞍山243000 [2]国家金属矿山固体废物处理与处置工程技术研究中心,马鞍山243000 [3]金属矿产资源高效循环利用国家工程研究中心,马鞍山243000

出　　处：《矿产保护与利用》2014年第6期19-24,共6页Conservation and Utilization of Mineral Resources

基　　金："十二五"国家科技支撑计划项目(2012BAB22G01)

摘　　要：以某微细粒赤褐铁矿样品为研究对象,针对赤褐铁矿嵌布粒度细、比表面大、磁选易团聚等特点,进行了不同选别工艺流程对比,最终采用粗细分选、强磁—螺旋溜槽与离心选矿机重选—中矿再磨再选工艺流程进行选别,获得了铁品位56.46%、硫含量1.47%、铁回收率77.24%的铁精矿。选别过程中利用离心力与重力的相互作用机理,将离心选矿机与强磁选机组合应用,充分发挥各单机优势,实现了微细粒赤褐铁矿有效分选,为微细粒赤褐铁矿综合利用提供了新的技术途径。Aiming at characteristics of fine dissemination ,large specific surface ,easy agglomerate for magnetic separation,etc.of a micro-fine hem-limonite ore,separation index comparison of vari-ous mineral procession operation is conducted .Iron concentrate assaying 56.46%iron,1.47%sul-fur,with iron recovery of 77.24%is obtained through different process for coarse and fine particles , high intensity magnetic separation （ HIMS）—gravity separation using spiral chute＆amp;centrifugal con-centrator—regrinding and reconcentration for middlings .Take centrifugal force and gravity interac-tion mechanism in sorting process ,united centrifugal separator and magnetic separator ,make full use of each machine ,realizing efficient separation of microfine hem -limonite and providing new meth-ods for comprehensive utilization of this kind of ore .

关 键 词：微细粒 赤褐铁矿 粗细分选 强磁选 离心选矿机 

分 类 号：TD951.1[矿业工程—选矿]