首页> 外国专利> GB A 2056471GB 0991614EP A1 0076404EP A1 0054461GB 0831745

GB A 2056471GB 0991614EP A1 0076404EP A1 0054461GB 0831745

机译:GB A 2056471GB 0991614EP A1 0076404EP A1 0054461GB 0831745

摘要

A novel method is disclosed which enables gallium and/or indium to be selectively separated and concentrated from a solution containing them in very low concentrations together with many other metal ions in rather high concentrations. The solution is passed through a bed of a chelating ion exchange resin having an amino carboxylic acid group either immediately or after the pH adjustment. Gallium and/or indium adsorbed on the chelate resin is desorbed by eluting with a mineral acid. The eluate, after the pH adjustment, is passed through another bed of a chelating ion exchange resin having an amino carboxylic acid group, and the resin is treated with a mineral acid to elute the metal ions adsorbed on the resin to thereby recover gallium and/or indium in the form of a concentrated solution.
机译:公开了一种新颖的方法,其使得能够从包含极低浓度的镓和/或铟以及相当高浓度的许多其他金属离子的溶液中选择性地分离和浓缩镓和/或铟。使溶液立即或在调节pH后通过具有氨基羧酸基的螯合离子交换树脂的床。吸附在螯合树脂上的镓和/或铟通过用无机酸洗脱而解吸。调节pH后,将洗脱液通过另一个具有氨基羧酸基的螯合离子交换树脂床,然后用无机酸处理该树脂,以洗脱吸附在树脂上的金属离子,从而回收镓和/或浓缩溶液形式的铟。

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