摘要
论述了某磁铁矿石采用“双介质,细筛-塔磨-高效磁选”工艺选别,双介质为风介质和水介质。磁铁矿经过粗破、中破、高压辊磨-风力分级后(风介质),产品粒度达到-0.074mm含量55%以上;风力分级后的产品经过一段磁选,磁选精矿经过二段磨矿后(水介质),粒度达到-0.074mm含量90%;经过磁选-细筛-塔磨-磁选后,获得了高品位精矿。新工艺取消了二段细筛作业及中矿循环量,简化了流程结构。
In this paper,the process separation method of“dual media,magnetic separation-tower mill-efficient magnetic separation”used for a certain type of magnetite is discussed.After coarse crushing,medium crushing,and HPGR-air classification(air medium),particle size of the product reaches-0.074mm>55%.Product after“air classification”goes through primary magnetic separators,and then goes to tower mill(water medium).After that,the particle size is-0.045mm,taking up 90%.Then through effective magnetic separation,high grade concentrates are achieved.The new process cancels the work of fine screening and regrinding,simplifies the flow structure,and achieves magnetite separation in short process.
作者
张丛香
钟刚
ZHANG Congxiang;ZHONG Gang(Anshan Iron and Steel Group Mining Design and Research Institute Co., Ltd.,Anshan 114002;Ansteel Mining Company Power Plant?Anshan 114002,China)
出处
《矿业工程》
CAS
2020年第1期33-36,共4页
Mining Engineering
关键词
磁铁矿
风介质
水介质
塔磨
高效磁选
magnetite
air medium
water medium
tower mill
efficient magnetic separation
