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金属矿山 ›› 2013, Vol. 42 ›› Issue (03): 73-76.

• 矿物工程 • 上一篇    下一篇

西北某难选铁矿石选矿试验

苗梁1,李国栋1,2,姜永智1,陈杜娟1   

  1. 1.西北矿冶研究院;2.北京科技大学土木与环境工程学院
  • 出版日期:2013-03-15 发布日期:2013-04-16

Experimental Research on Beneficiation of a Refractory Iron Ore at Northwest of China

Miao Liang1,Li Guodong1,2,Jiang Yongzhi1,Chen Dujuan1   

  1. 1.Northwest Research Institute of Mining &Metallurgy;2. School of Civil and Environmental Engineering,University of Science and Technology Beijing
  • Online:2013-03-15 Published:2013-04-16

摘要: 西北某难选铁矿石中主要铁矿物为磁铁矿和镜铁矿,其中磁铁矿与镜铁矿、镜铁矿与石英嵌布关系密切。对该矿石进行了磨选工艺技术条件研究,结果表明,采用磨矿—1粗1精弱磁选—强磁粗选—强磁粗精矿再磨—强磁精选流程处理,可以获得铁品位为66.39%、回收率为40.94%的弱磁精矿和铁品位为63.41%、回收率为37.27%的强磁精矿,综合精矿铁品位为64.95%、回收率为78.21%。

关键词: 磁铁矿, 镜铁矿, 弱磁选, 强磁选

Abstract: There are mainly magnetite and specularite in a refractory iron ore at northwest of China, among which magnetite and specularite, specularite and quartz have a closely disseminated relationship. The technical conditioning tests for grinding and concentration of the ore are carried out. The results showed that low intensity magnetic concentrate with Fe grade of 66.39% and recovery of 40.94% and high intensiy magnetic concentrate with Fe grade of 63.41% and Fe recovery of 37.27% were obtained by the process of grinding-low intensity magnetic separation with one roughing and one cleaning-rough high intensity magnetic separation-regrinding of rough concentrate-cleaning concentration with high intensity magnetic separation. Total Fe concentrate is grading at 64.95% with the recovery of 78.21%.

Key words: Magnetite, Specularite, Low intensity magnetic separation, High intensity magnetic separation