Chinese Journal of Chemical Engineering, Vol.8, No.3, 241-246, 2000
Study of sorption properties of anion exchangers with long-chained cross-linking agents for tungsten hydrometallurgy
The macroporous anion exchangers with long-chained cross-linking agents were investigated for the tungsten recovery from salt solutions. The physical-chemical characteristics of these sorbents were studied by means of sorption-desorption experiment as well as electron and IR-spectroscopy. The anion exchangers on the basis of macroporous copolymers of methylacrylate and divinyl-ester of diethyleneglycol or tetravinyl-ester of pentaerythritol possess the exchange capacity to tungsten 2-5 times greater than the porous anion exchangers on the basis of styrene and divinylbenzene, therefore they can be used for selective tungsten recovery from complex salt solutions.
Keywords:anion exchangers;macroporous structure;long-chained cross-linking agents;tungsten recovery;salt solution