在湿法炼锌工业生产中,一般都用电沉积的方法获得电解锌。为了保证电解锌的质量,减少阳极和冷却器的腐蚀等,溶液中的氯离子应在100(毫克/升)以下;但很多原料的浸出液中,氯含量都高于这个水平。因此,要求有一个净化除氯的工序。过去,为除去大量的氯,一般都用焙烧和碱洗法;少量的氯,有用湿法炼锌过程产出的铜镉渣除氯的,也有用717离子交换树 In wet zinc smelting industry, electrolytic zinc is generally obtained by electrodeposition. In order to ensure the quality of electrolytic zinc, reduce the corrosion of the anode and cooler, the chloride ion in the solution should be below 100 (mg / L); however, the chlorine content in many raw materials leaching solution is higher than this level. Therefore, there is a need to purify the chlorine removal process. In the past, in order to remove a large amount of chlorine, the roasting and caustic washing processes were generally used. A small amount of chlorine, useful for dechlorination of copper and cadmium residues from the zinc hydrometallurgy process, is also useful as a 717 ion exchange tree