大孔型树脂处理高浓度钨酸钠溶液

Treatment of high concentration sodium tungstate with macroporous resin

采用大孔型树脂在酸性条件下处理高浓度钨酸钠溶液发现，D301大孔型弱碱性阴离子树脂处理高浓度钨酸钠溶液时性能最佳。考察交前液pH值、树脂粒径、W03浓度、温度以及搅拌速度对离子交换过程的影响。结果表明：在溶液pH值约为6时、树脂粒径为0．42～0．59mm、W03浓度为350gm、温度为25℃的条件下，D301树脂吸附效果最佳，吸附的WO3容量达到850mg／g干树脂，远高于传统的201×7树脂的吸附容量。

The effect of resin type on ion exchange process was investigated. The effects of technical conditions, such as particle size of resin, pH value of solution, concentration of WO3, temperature and stirring speed were studied. The result shows that weak-base anion exchange resin D301 works best. The D301 resin exhibits excellent performance under the conditions of pH value 6, resin particle size 0.42-0.59 mm, WO3 concentration 350 g/L and temperature 25 ℃. The adsorption capacity of D301 resin can exceed 850mg/g under the optimum conditions, which is higher than the capacity of 201×7 resin.