中钇富铕稀土矿萃取分离前水解除铝研究  

Removing of Aluminum from Leaching Solution of Yttrium-medium and Europium-rich Mineral by Using Hydrolysis Method

作　　者：沈杨扬 袁萍 刘明星[3] 熊友发[1] 范紫权[1] 钟盛华[1] 

机构地区：[1]江西农业大学理学院,江西南昌330045 [2]江西金世纪新材料股份有限公司,江西南昌330013 [3]江西农业大学国土资源与环境学院,江西南昌330045

出　　处：《稀土》2014年第5期30-35,共6页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(20961003);江西省自然科学基金项目资助(0420053)

摘　　要：对中钇富铕离子稀土矿萃取分离前的料液,用水解法除铝,进行了pH、稀土浓度、温度、陈化时间等条件的除铝实验,测定出这些条件下Al(OH)3的沉淀反应商(Q)及部分Ksp[Al(OH)3]值。实验的Al去除率最大为97%,表明精矿溶解料直接用水解法除铝可行。与萃取法除铝相比,该方法简单,不需增加设施,成本低。By using hydrolysis method,aluminum ion in leaching solution of yttrium-medium and europium-rich mineral can be largely removed before extraction separation process.The reaction quotient Q value and Kspvalue of Al（OH）3precipitation were measured under different experiment conditions including pH,concentration,temperature and aging time.aluminum removal efficiency can reach 97% in experiment indicating that direct application of hydrolysis method in aluminum removal from the leaching solution is feasible.Compared with extraction method,hydrolysis method provides several advantages,such as simple process,no demand of additional facilities and low cost;thus holds great promise for industrial application.

关 键 词：稀土 除铝 中钇富铕矿 水解法 

分 类 号：TF803.25[冶金工程—有色金属冶金] O614.3[理学—无机化学]