贵州菱锰矿高梯度磁选过程中矿物结构及其磁性能变化  

Variation of Mineral Structure and Magnetic Properties in the Process of High Gradient Magnetic Separation of Rhodochrosite Ore from Guizhou

作　　者：陈文祥[1,2] 邓强 张周位[1] 杨祥 严春杰[2] 吴艳[2] CHEN Wen-xiang;DENG Qiang;ZHANG Zhou-wei;YANG Xiang;YAN Chun-jie;WU Yan(Guizhou Central Laboratory of Geology and Mineral Resources,Guiyang 550018,Guizhou,China;Engineering Research Center of NanoGeo Materials of Ministry of Education,Faculty of Materials Science and Chemistry,China University of Geosciences,Wuhan 430074,Hubei,China)

机构地区：[1]贵州省地质矿产中心实验室,贵州贵阳550018 [2]中国地质大学材料与化学学院纳米矿物材料及应用教育部工程研究中心,湖北武汉430074

出　　处：《矿冶工程》2018年第4期57-60,共4页Mining and Metallurgical Engineering

基　　金：贵州省科技计划项目(黔科合SY字[2015]3003号);国家自然科学基金(51774259)

摘　　要：通过一粗一扫高梯度磁选实验,讨论了磁选过程中贵州菱锰矿各阶段矿物的结构、磁性能与分选效果之间的关系,结果表明,所有阶段产品均具环内顺磁行为,且在较小的局部区域内,它们具有不同的矫顽力。磁滞回线的对比分析表明,铁磁性矿物(黄铁矿的氧化物)在菱锰矿物磁选中交互作用,导致无法分离,也很好验证了总铁含量居高不下,其一直伴随着菱锰矿。A rhodochrosite ore from Guizhou was processed using a high gradient magnetic separation flowsheet consisting ol one roughing and one scavenging,and the relationships between mineral structure,magnetic properties and their separation efficiency for each processing stage were investigated.Results showed that all the minerals within the ring are of paramagnetic and possess varied coercive intensity in some local regions.The comparison of magnetic hysteresis loops showed that there was interaction between ferromagnetic minerals(the oxidation products of pyrite)and rhodochrosite minerals,resulting in the difficulty for their separation from each other,which thus contributed to the total iron content remaining high in rhodochrosite concentrate.

关 键 词：菱锰矿 高梯度磁选 矿物成分 磁性能 

分 类 号：TD924[矿业工程—选矿]