从江西某铁矿尾矿中回收铁精矿  

Recovery of Iron From Jiangxi Iron Ore Tails

作　　者：罗丕[1] 周美兰[1] 罗琳[1] 薛伟[1] 陈代雄[2] 

机构地区：[1]湖南农业大学,湖南长沙410128 [2]湖南有色金属研究院,湖南长沙410015

出　　处：《湿法冶金》2008年第2期117-119,共3页Hydrometallurgy of China

摘　　要：江西某铁矿主要金属矿物为褐铁矿,矿石含泥含水且可选性差,采用磁化还原焙烧法可改善矿石的分选性。结果表明,在950～1000℃、褐煤用量15%～20%条件下焙烧2 h,焙砂在87.55 kA/m磁场强度下进行磁选,铁精矿产率51.46%,全铁回收率78.88%,效果较好。Main metal mineral in some ore,Jiangxi is limonite. The iron ore contains a lot of water and mud and has bad sorting characteristics, but its sorting characteristics can be improved by magnetization reduction roast. The experiment results show that under 950-1 000 ℃ , 15% -20% of lignite dosage and roasting for 2 h,then the roasted product is magnetic separated in 87.55 kA/m of magnetic field,productivity of iron ore concentrate is 51.46% ,recovery of all iron is 78. 88%.

关 键 词：铁矿石 尾矿 磁化还原焙烧 磁选 铁精矿 回收 

分 类 号：TD951[矿业工程—选矿]