鞍山地区贫磁铁矿选矿工艺试验  

Experimental Study on Ore Dressing of Lean Magnetite in Anshan Area

作　　者：李博琦 谢贤[1] 纪翠翠[1] 朱辉 黎洁 康博文 Li Boqi;Xie Xian;Ji Cuicui;Zhu Hui;Li Jie;Kang Bowen(Faculty of Land Resource Engineering,Kunming University of Science and Technology,State Key Laboratory of Complex Nonferrous Metal Resources Clean,Utilization,Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources,Kunming,Yunnan,China)

机构地区：[1]昆明理工大学国土资源工程学院,省部共建复杂有色金属资源清洁利用国家重点实验室,云南省金属矿尾矿资源二次利用工程研究中心,云南昆明650093

出　　处：《矿产综合利用》2020年第4期93-99,共7页Multipurpose Utilization of Mineral Resources

摘　　要：随着中国经济的迅猛发展,铁矿石的需求量日益增加。近年来铁矿石进口量逐年递增,对外依存度达到75%。虽然我国铁矿石储量较大,但品位低且禀赋较差,开发利用难选的低品位的贫磁铁矿,对于解决我国铁矿资源短缺的现状意义重大。试验所用矿样来自辽宁省鞍山地区的贫磁铁矿矿石,原矿TFe品位15.85%,主要金属矿物为磁铁矿,少量赤铁矿和褐铁矿,脉石矿物以石英为主,矿石嵌布粒度较细。试验采用"高压辊磨超细碎-干式预选-阶段磨矿-单一磁选"的工艺流程对贫磁铁矿进行分选。最终得到铁精矿品位67.24%,铁回收率60.88%,产率14.75%。With the rapid development of China's economy,the demand for iron ore is increasing.In recent years,the import volume of iron ore has raised with year by year,and the dependence on foreign countries has reached 75%.Although Chinese iron ore reserves are large,but the grade is low and the endowment is poor,the development and utilization of refractory ores lean magnetite is of great significance for solving the current situation of iron ore resource shortage in China.The poor magnetite ore sample used in the experiment is from Anshan area,Liaoning Province.The raw ore has a TFe grade of 15.85%.The main metal minerals are magnetite,a small amount of hematite and limonite,while gangue minerals are mainly quartz and buried.The granularity is fine.The test uses a process of"high pressure roll mill ultrafine crushing-dry preselection-stage grinding-single magnetic separation"to sort the lean magnetite.Finally,the iron concentrate grade is 67.24%,the iron recovery rate is 60.88%,and the yield is 14.75%.

关 键 词：贫磁铁矿 高压辊磨机 超细碎 单一磁选 

分 类 号：TD951[矿业工程—选矿]