Separation of macro amounts of tungsten and molybdenum by ion exchange with D309 resin  

利用D309树脂离子交换分离宏量钨和钼(英文)

作　　者：卢晓颖[1] 霍广生[1] 廖春华[1] 

机构地区：[1]中南大学冶金与环境学院,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第9期3008-3013,共6页中国有色金属学报（英文版）

基　　金：Project(51174232)supported by the National Natural Science Foundation of China

摘　　要：Based on the difference in tendency to polymerize between tungsten and molybdenum, a new method using D309 resin was propounded. The batch tests indicate that the optimum pH value and contact time for the separation are 7.0 and 4 h respectively, the maxium separation factor of W and Mo is 9.29. And the experimental resules show that isothermal absorbing tungsten and molybdenum belongs to Langmuir model and Freundlich model respectively, and the absorbing kinetics for tungsten is controlled by intra-particle diffusion. With a solution containing 70 g/L WO3 and 28.97 g/L Mo, the effluent with a mass ratio of Mo to WO3 of 76 and the eluate with a mass ratio of WO3 to Mo of 53.33 are obtained after column test.基于钨、钼在水溶液中聚合能力的差异,提出一种利用D309树脂离子交换分离钨、钼的新方法。静态实验表明,分离钨、钼的最佳pH值为7.0,最佳接触时间为4 h,钨、钼分离系数达到9.29。等温吸附过程研究表明,D309树脂对钨、钼的吸附分别属于Langmuir模型和Freundlich模型。吸附动力学研究表明,D309树脂对钨的吸附属于内扩散控制。对于含70 g/L WO3和28.97 g/L Mo的料液,经动态吸附分离钨、钼后,所得流出液中Mo与WO3的质量比达76,所得解吸液中WO3与Mo的质量比达53.33。

关 键 词：high concentrated tungstate and molybdenum solution ion exchange batch tests column tests 

分 类 号：TQ028.33[化学工程]