磁重分选机在微细复杂磁铁矿选矿中的应用研究  

Study on Aplication of Magnetic and Gravity Separator in Beneficiation of a Fine and Complex Magnetite

作　　者：王秋林[1] 程征[1] 李家林[1] 杨光[2] 薛敏[2] 

机构地区：[1]长沙矿冶研究院资源所,湖南长沙410012 [2]鞍钢集团矿业公司东鞍山烧结厂,辽宁鞍山114000

出　　处：《矿产综合利用》2014年第5期18-21,共4页Multipurpose Utilization of Mineral Resources

摘　　要：某酸性微细粒原生磁铁矿矿石,原矿品位TFe38.9%,在详细条件试验的基础上,最终确定采用粗粒(-3mm)磁选抛尾—阶段磨矿(最终磨矿细度-0.045mm 95%)-阶段磁选-磁重分选流程,可得产率37.96%(选矿比2.63)、品位TFe62.09%、全铁回收率60.59%的铁精矿,选别指标较好。该工艺流程结构简单,经济实用,为开发同类或近类矿石提供借鉴意义。The TFe grade of a certain acidic and utrafine native magnetite ore is 38.9%. On the basis of detailed condition test, a concentrate with a yield of 37.96% （concentration ratio as 2.63 ）, a TFe grade of 62.09% and a recovery of 60.59% can be obtained by using magnetic cobbing discarding railings-stage gringding-stage magnetic separation-magnetic and gravity separation. The beneficiation index is satisfactory. The flowsheet is simple, economi- cal and practical, which provides reference for the exploitation of the same or similar kind of iron ores.

关 键 词：磁重分选 阶段磨矿 阶段磁选 铁精矿 

分 类 号：TD951[矿业工程—选矿]