离子交换法分离铜电解液中铁锑 Removal of Iron and Antimony from Copper Electrolytes Using the Ion Exchange Method

本文采用离子交换树脂分离铜电解液中铁和锑进行了实验室扩大试验研究。研究结果表明：离子交换树脂可以吸附铜电解液中50%左右的铁和99%以上的锑。经30个床体的吸附，吸附后液中的锑含量均在20 mg/L以下，采用6 M HCl脱附剂可有效地将铁和锑洗脱。该离子交换树脂也吸附一定量的铋、镍离子，用6 M HCl可将树脂所吸附的铋和镍等离子完全脱附下来。经多次循环吸附–脱附试验表明，其稳定性良好。 A lab-scale enlarging experiment on removal of iron and antimony from copper electrolytes by the ion exchange method was studied. The results show that 50% of the iron and more than 99% of the antimony are adsorbed by the ion exchange resin. After 30 bed volumes adsorption, the content of antimony in solution is less than 20 mg/L. And the adsorbed iron and antimony can be thoroughly desorbed by using 6 M HCl solution. This ion exchange resin can also adsorb some bismuth ions and nickel ions, which can be thoroughly desorbed with 6 M HCl solution. Circulation tests indicate that this method has excellent adsorption-desorption stability.