【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。更多还原

【Abstract】 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.更多还原