恩施某鲕状赤铁矿选矿试验研究  

Beneficiation Tests on an Oolitic Hematite from Enshi

作　　者：丁宝成[1,2] 杨大兵[1,2] 王雄[1,2] 徐佳鑫[1,2] 

机构地区：[1]武汉科技大学资源与环境工程学院 [2]冶金矿产资源高效利用与造块湖北省重点实验室

出　　处：《现代矿业》2014年第5期20-22,42,共4页Modern Mining

摘　　要：采用磁化焙烧—磁选—反浮选流程对恩施某细粒嵌布鲕状赤铁矿矿石进行了选矿试验。结果表明,矿石在还原剂用量为7%、焙烧温度为850℃、焙烧时间为90 min条件下焙烧后,磨细至-0.074 mm占85%,在磁场强度为278.67 kA/m条件下弱磁选,磁选精矿在NaOH用量为1 500 g/t、淀粉用量为1 200 g/t、CaO用量为900 g/t、RA-715用量为750g/t、2#油用量为20 g/t条件下进行浮选试验,可以获得铁品位为63.78%,回收率为58.72%,含磷0.25%的铁精矿。Magnetic roasting,low intensity magnetic separation,reverse flotation process was carried out on an oolitic hematite,Enshi. The results showed that with 7% dosage of reducing agent,calcinations at 850 ℃ for 90 min,and the roasted products were grinded at fineness of 85% passing 0. 074 mm for magnetic separation at 278. 67 kA / m field intensity. Iron concentrate with iron grade of 63. 78%,recovery of 58. 72%,and 0. 25% P can achieved through dealing magnetic concentrate with NaOH dosage of 1 500 g / t,starch dosage of 1 200 g / t,CaO dosage of 900 g / t,RA-715 dosage of 750 g / t,2#oil dosage of 20 g / t for reverse flotation process.

关 键 词：鲕状赤铁矿 磁化焙烧 弱磁选 反浮选 

分 类 号：TD951[矿业工程—选矿]