氧化铝赤泥盐酸浸出回收钒的试验研究  

Experimental Study on the Vanadium Recovery by Hydrochloric Acid Leaching of Alumina Red Mud

作　　者：王克勤[1] 李生虎[1] 

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《稀有金属与硬质合金》2012年第6期5-8,34,共5页Rare Metals and Cemented Carbides

基　　金：氧化铝赤泥回收有价金属产学研合作项目(2009-39)

摘　　要：采用盐酸两段浸出氧化铝赤泥中的钒,钒浸出率达97.96%;二段浸出液经蒸发浓缩及净化除杂后,采用100%醋酸戊酯进行三级萃取,钒萃取率达到95.67%;对负载有机相采用10%NH4OH进行三级逆流反萃,钒反萃率达到97.23%;反萃水相经铵盐沉淀、热分解等工序后,得到纯度为98.50%的V2O5产品,钒总回收率为82.69%。Vanadium was recovered by two-stage hydrochloric acid leaching of alumina red mud, with vanadium leaching rate up to 97.96%. The resultant leached solution was evaporated,thickened and purified before 3-stage extraction with 100% amyl acetate,with V extraction rate up to 95.67%. 3-stage countercurrent stripping of the loaded organic phase was carried out with 10% NH4OH solution, with vanadium stripping rate up to 97.23%. The product containing 98.50% V2 O5 can be obtained by ammonium salt precipitation and thermal decomposition of stripping aqueous phase, and the overall vanadium recovery is up to 82.69%.

关 键 词：氧化铝赤泥 钒回收 盐酸浸出 溶剂萃取 

分 类 号：TF841.3[冶金工程—有色金属冶金]