摘要
甘肃某铁矿以磁铁矿石为主,在最终磨矿细度-0.038mm为98.9%时,经三段磨矿五段弱磁选、反浮选可将铁品位提高至61.02%,SiO2含量11.25%,但铁回收率低,选矿成本高。采用弱磁—反浮选回收磁铁矿、弱磁尾矿强磁抛尾—直接还原—弱磁选的联合流程,铁精矿品位可达66.68%,回收率为69.92%。
Following three-stage grinding and five-stage low LIMS or reverse flotation,iron grade of Magnetite,which is the dominant ore in a mine in Gansu can be increased to 61.02% and SiO2 content can reach 11.25% with final grinding size of -0.038mm,passing 98.9%.However,iron recovery is low and beneficiation cost is relatively high.By adopting combined flow LIMS-reverse flotation （to recover magnetite）,high magnetic field （to rej ect weak magnetic tailings）-direct reduction-LIMS,iron ore grade can reach 66.68% with recovery rate of 69.92%.
出处
《矿业工程》
CAS
2014年第6期25-27,共3页
Mining Engineering
关键词
微细嵌布磁铁矿
磁选
反浮选
extra-fine embedded magnetite
magnetic separation
reverse flotation
