微细粒磁-赤铁矿超细碎-干式预选新技术研究  

Application of Ultrafine Crushing-Dry Preconcentration Technology in Fine Magnetite-Hematite Ore Processing

作　　者：陈志友 游庆 陈芳[1] 张海平[1] CHEN Zhi-you;YOU Qing;CHEN Fang;ZHANG Hai-ping(School of Physical Science and Engineering Technology,Yichun University,Yichun 336000,Jiangxi,China)

机构地区：[1]宜春学院物理科学与技术学院,江西宜春336000

出　　处：《矿冶工程》2019年第2期65-67,共3页Mining and Metallurgical Engineering

摘　　要：研究了微细粒磁-赤铁矿超细碎-干式预选技术。结果表明,当粒度为-5 mm,磁辊磁感应强度0.3 T,线速度为0.48 m/s时,干式预选尾矿产率为27.60%、铁品位12.35%、磁性铁含量为0.60%,干式预选精矿产率为72.40%,铁品位由25.65%提高至30.60%。An ultrafine crushing-dry preconcentration flowsheet was introduced to upgrade fine magnetite-hematite ore. After smashed to - 5 mm,the ore was processed by a dry magnetic separation with the roller surface magnetizing induction intensity at 0.3 T and the roller rotating linear velocity at 0.48 m/s,which yielded 72.40% dry pre-enrichment concentrate,with Fe grade increased from 25.65% to 30.60%,and resulted in the obtained tailings graded 12.35% Fe, with magnetic iron therein at the content of 0.60%.

关 键 词：磁铁矿 赤铁矿 磁选 干式预选 

分 类 号：TD924[矿业工程—选矿]