某尾矿预富集精矿磁化焙烧产品合理选别工艺研究  

Optimization of Separation Process for Magnetizing Roasting Products of Preconcentrated Concentrate of Iron Ore Separation Tailings

作　　者：杨晓峰 陈宇 梅灿国 YANG Xiaofeng;CHEN Yu;MEI Canguo(Ansteel Group Beijing Research Institute Co Ltd,Beijing 102200,China;Ansteel Mining Engineering Corporation,Anshan 114002,Liaoning,China)

机构地区：[1]鞍钢集团北京研究院有限公司,北京102200 [2]鞍钢集团矿业设计研究院有限公司,辽宁鞍山114002

出　　处：《矿冶工程》2023年第5期54-57,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51674064,51674065)。

摘　　要：对某尾矿经预富集-磁化焙烧后的产品分别进行了磨矿-磁选和磨矿-磁选-浮选联合工艺试验研究。TFe品位33.19%的焙烧矿采用磨矿-磁选工艺,在磨矿细度-0.025 mm粒级占97%时可获得TFe品位63.04%、回收率80.04%的铁精矿,虽然工艺流程简单,但磨矿细度在工业生产中较难实现,且磨矿成本极高;采用磨矿-磁选-浮选联合工艺,在磨矿细度-0.025 mm粒级占85%时可获得TFe品位65.36%、回收率73.39%的铁精矿,且磨矿细度在工业生产中可以实现,磨矿成本明显较低。After iron tailings was subjected to preconcentration followed by magnetizing roasting process,the obtained product was taken in an experiment to be processed respectively by adopting a grinding and magnetic separation process and a combined process of grinding plus magnetic separation followed by flotation process.The roasted ore with TFe grade of 33.19%was processed using a grinding and magnetic separation approach,resulting in an iron concentrate grading 63.04%TFe at 80.04%recovery at a grinding fineness of-0.025 mm 97%.Although the processing flowsheet is simple,it is still hard to achieve such a grinding fineness in commercial practice and the grinding cost is also extremely high.However,a process consisting of grinding,magnetic separation and flotation,with a grinding fineness of-0.025 mm 85%,can produce an iron concentrate grading 65.36%TFe at 73.39%recovery.Therewith,such grinding fineness is commercially practicable and the grinding cost can be obviously reduced.

关 键 词：尾矿综合利用 铁尾矿 铁精矿 磁化焙烧 磨矿细度 磁选 浮选 

分 类 号：TD981[矿业工程—选矿]