高铁、高硅溶液中萃取钼

沉淀钼酸铵后的溶液含铁、硅较高,为了综合回收利用钼,采用N235萃取分离钼。对影响萃取分离钼的因素进行考察。结果表明,采用20%N235+10%仲辛醇+70%的煤油体系在下述最佳工艺条件下可有效实现钼、硅、铁的分离,钼萃取率达到95.0%以上:萃取平衡时间3～5min、酸浓度5～20g/L、级数4～5级、相比O/A=1/2～1/4。

Extraction Separating Mo2+ from Solution with High Si and Fe Containing

In order to recycle molybdenum comprehensively, solvent extraction process for Mo separation from solution contained high concentration of Si and Fe in N235-kerosene system was investigated. The effecting factors on Mo extraction were discussed. The results show that over 95% extraction rate of Mo could be gained and effective separation of Mo, Fe and Si under the following optimum conditions using 20% N235+10% sec-octyl octanol +70% kerosene extraction system: equilibrium time of 3~5 min, acidity of 5~20 g/L, countercurrent extraction series of 4~5, phase ratio of O/A=1/2~1/4.