微波预处理对磁铁矿选矿效果的影响研究  

INVESTIGATION ON EFFECT OF MICROWAVE PRETREATMENT ON MAGNETITE BENEFICIATION

作　　者：郑孝英[1] 陈沪飞 陈晋[2] 陈菓[3,4] 李军 彭金辉[2] 阮榕生[3,4] ZHENG Xiao-ying;CHEN Hu-fei;CHEN Jin;CHEN Guo;LI Jun;PENG Jin-hui;RUAN Roog-sheeg(Kunming Metallurgy College, Kunming 650093, China;Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming University of Science and Technology, Kunming 650093, China;Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Yunnan Minzu University, Kunming 6505003, China;State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co , Ltd , Panzhihua 617000, Sichuan, China)

机构地区：[1]昆明冶金高等专科学校,昆明650093 [2]非常规冶金省部共建教育部重点实验室,昆明理工大学,昆明650093 [3]云南省高校民族地区资源清洁转化重点实验室,云南民族大学,昆明650503 [4]钒钛资源综合利用国家重点实验室,攀钢集团研究院有限公司,四川攀枝花617000

出　　处：《矿冶》2017年第6期1-4,11,共5页Mining And Metallurgy

基　　金：国家自然科学基金资助(51504110,51404114)

摘　　要：采用微波对矿石进行加热预处理,使得矿物被更好地解离,提高了磁铁矿的磁选精矿产率和精矿品位。结果表明,当微波功率达到3 k W时,磁铁矿的磁选精矿产率由未处理原矿时的44%提高到72%;磁选电流为2.0 A时,磁选精矿产率达到最大,为60%;且经过微波加热处理的矿石在磁选后,其精矿产品品位较原矿(50.2%)提高了6%~8%。In this study,microwave was used to preheat the ore to make the minerals to be better liberated,and the magnetic separation concentrate productivity and the grade of magnetite concentrate improved The test results show that when the microwave power reaches3kW,the magnetic separation concentrate productivity increases from44%to72%,compared to the untreated raw ore;and when the magnetic current was20A,the production rate of magnetic separation concentrates reaches the maximum of60%;and after the treatment by microwave heating the concentrate grade of the ore was increased by6%~8%compared with that of the raw ore(502%)

关 键 词：微波 磁铁矿 磁选 精矿产率 

分 类 号：TD951[矿业工程—选矿]