某磁铁矿提质降杂技术  

QUALITY IMPROVEMENT AND IMPURITY REDUCTION TECHNOLOGY OF A MAGNETITE ORE

作　　者：刘国蓉 刘万峰 刘承帅 LIU Guo-rong;LIU Wan-feng;LIU Cheng-shuai(BGRIMM Technology Group, Beijing 100160, China;BGRIMM Machinery and Automation Technology Co., Ltd., Beijing 100160,China)

机构地区：[1]北京矿冶科技集团有限公司,北京100160 [2]北矿机电科技有限责任公司,北京100160

出　　处：《矿冶》2018年第6期10-16,共7页Mining And Metallurgy

摘　　要：某铁矿石中的铁以磁铁矿为主,含部分黄铁矿、磁黄铁矿等铁矿物。磁黄铁矿和黄铁矿的存在,致使在采用直接磁选时,铁精矿含硫较高。针对矿石中的磁铁矿物和含硫矿物的特性特点,进行了详细的多方案试验研究。结果表明,原矿粗磨磁选抛尾—磁粗精矿再磨浮选脱硫—浮选脱硫尾矿磁精选联合流程适合处理该铁矿。该技术可为同类型磁铁矿山脱硫提供技术支持。A type of iron ore is mainly composed of magnetite,pyrite and pyrrhotite.Because of the influence of pyrite and pyrrhotite,it is difficult to obtain grade-qualified iron concentrate with the problem of high sulfur content if treated by single magnetic separation.Multi-scheme experiments were conducted based on investigation properties of magnetite,pyrite and pyrrhotite in this paper.The results indicated that the combined processing flowsheets are not only suitable for this type of iron ore,but technical supporting for the other iron ore with the same type.Flowsheet:Discarding tailings by magnetic separation after rough grinding-regrinding the rough concentrate of magnetic separation and then desulphurization by flotation-the flotation tailings cleaned by magnetic separation.

关 键 词：磁铁矿 磁黄铁矿 黄铁矿 提质降杂 

分 类 号：TD92[矿业工程—选矿]