永州某高泥细粒贫赤铁矿选矿工艺研究  

Beneficiation of Low-grade Highly-mudded Fine Hematite Ore from Yongzhou

作　　者：刘有才[1] 林清泉[1] 符剑刚[1] 李丽峰[1] 朱忠泗[1] 陈凯达[1] 李志辉[1,2] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083 [2]长沙矿冶研究院有限责任公司,湖南长沙410012

出　　处：《矿冶工程》2013年第6期42-45,共4页Mining and Metallurgical Engineering

摘　　要：针对永州某地高泥细粒的贫赤铁矿采用选择性絮凝脱泥-强磁抛尾-阳离子反浮选组合新技术进行了选矿工艺研究。试验结果表明,原矿经聚丙烯酰胺絮凝脱泥,磁场强度960 kA/m下强磁选别,得到含铁55%、回收率为85%的磁铁精矿;后经GE-609A阳离子反浮选,获得了品位为59.8%、回收率为94.2%的铁精矿。A combined process flowsheet including selective flocculation for desliming, high intensity magnetic separation （HIMS） for gauge discarding and cationic reverse flotation was adopted to recover low-grade highly-mudded fine hematite ore from Yongzhou in Hunan Province. Results indicate that a magnetite concentrate with iron grade and recovery of 55% and 85%, respectively, can be collected after a flocculation desliming with polyacrylamide （PAM） as floceulant and HIMS with magnetic field intensity of 960 kA/m. After a following reverse flotation with cationic collector GE-609A, the grade and recovery of iron concentrate can be improved to 59.8% and 94.2%, respectively.

关 键 词：细粒赤铁矿 絮凝脱泥 强磁选 阳离子反浮选 

分 类 号：TD951[矿业工程—选矿]