超贫磁铁矿干式预选实验研究  

Experimental study of dry preconcentration on ultralow-grade magnetite ores

作　　者：王玲[1] 滕秀德 王森[1] 张云鹏[1] 

机构地区：[1]华北理工大学矿业工程学院河北省矿业开发与安全技术重点实验室,河北唐山063009 [2]河北钢铁集团矿业公司涞源有色金属公司,河北保定074300

出　　处：《中国矿业》2016年第1期115-117,共3页China Mining Magazine

基　　金：国家自然科学基金项目"铁矿石粉碎能耗合理分布规律研究"资助(编号:51374087)

摘　　要：河北某超贫磁铁矿矿石储量大,全铁含量为14.64%,磁性铁含量仅占全铁的47.88%。矿石中,有用矿物主要为磁铁矿。在破碎至-12mm粒度、磁场强度159kA/m、带速1.2m/s的条件下,磁滑轮干式预选可以抛出产率为68.32%、磁性铁含量为0.58%的尾矿,磁性铁作业回收率达90%以上。围岩混入会影响磁性铁的回收。本研究为该超贫磁铁矿的合理开发利用提供技术支撑。The content of total iron is 14.64% and the magnetic iron only accounts tor 47.88% ot thetotal iron in an ultralow-grade iron mine inHebei, but its reserves is great. Magnetite is the main valuablemineral. The yield of the tailings reaches 68. 32% by dry preconcentrationwith magnetic pulley, and themagnetic iron content of the tailings is 0.58%, whichthe recovery of the magnetic iron is above 90%. Theinterfusion of the wall rock will affect the recovery of the magnetic iron. The investigation provides thetechnical support for the reasonable exploitation of the ultralow-grade iron ores.

关 键 词：超贫磁铁矿 能耗 选矿成本 干式预选 

分 类 号：TD921[矿业工程—选矿]