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.
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)
出处
《矿冶工程》
CAS
北大核心
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)。
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
comprehensive utilization of tailings
iron tailing
iron concentrate
magnetizing roasting
grinding fineness
magnetic separation
flotation
作者简介
杨晓峰(1971-),女,辽宁鞍山人,正高级工程师,主要研究方向为选矿工艺技术。
