某硫酸渣选铁尾矿提铁选矿工艺试验  

Iron Recovery from a Tailing of Sulfuric Acid Slag for Iron Concentration

作　　者：钟素姣[1,2] 高春庆[1,2] 王海亮[1,2] 侯更合[1,2] 孙炳泉[1,2] 

机构地区：[1]中钢集团马鞍山矿山研究院有限公司 [2]金属矿山安全与健康国家重点实验室

出　　处：《现代矿业》2014年第6期20-22,28,共4页Modern Mining

基　　金：国家课题863项目:冶金矿渣铅锌铁镍及稀贵金属回收利用技术研究及示范(编号:2012AA062406)

摘　　要：针对品位为57.10%的硫酸渣原渣经过螺旋溜槽重选得到铁品位超过62%的铁精矿后,尾矿铁品位仍较高且铁回收率只有47.95%的问题,开展了对硫酸渣重选尾矿采用离心选矿机重选、磁选—浮选和脱泥—浮选,3种方案进一步回收铁的试验研究。试验结果表明:采用脱泥—浮选方案效果最佳,尾矿提铁可获得铁品位为59.97%,铁回收率为42.65%的铁精矿,从而使硫酸渣综合精矿品位达到了61.52%,综合铁回收率达到了70.15%。After spiral chute gravity concentration of a sulfuric acid raw slag with 57. 10% iron grade, iron concentrate with iron grade of above 62% is received but iron grade of tailings is high and iron recovery of concentrate is only 47.95 %. Beneficiation comparison experiments of gravity concentration using centrifugal separator, magnetic--flotation separation, and desliming--flotation process were conducted for iron recovery increasing. The results showed that optimal result can received by desliming--flotation process, iron concentrate with iron grade of 59.97%, iron recovery of 42.65% was received for iron increase of tailings, thus mixed concentrate with iron grade of 61.52% , comprehensive recovery of 70.15% was achieved.

关 键 词：硫酸渣 尾矿选铁 重选 磁选—浮选 脱泥—浮选 

分 类 号：TD951[矿业工程—选矿]