赣州钴冶炼厂从高砷钴矿提取钴采用湿法流程。砷冰钴浸出液常含较高的铁和砷,一般为Co:Fe=2:1,Fe:As=2～3:1。过去一直采用氯酸钠作氧化剂、纯碱作中和剂,分两次氧化中和水解除铁砷。此工艺的主要缺点是,流程冗长,渣的过滤性能差,铁砷渣含钴较高,需经酸洗、水洗,才能废弃。 Ganzhou cobalt smelter cobalt from the high arsenic cobalt extraction using wet process. Arsenic ice cobalt leachate often contains high iron and arsenic, usually Co: Fe = 2: 1, Fe: As = 2 ~ 3: 1. In the past, sodium chlorate was used as oxidant and soda ash as neutralizer to neutralize and hydrolyze iron arsenic in two separate oxidation stages. The main disadvantage of this process is that the process is lengthy and the slag filtering performance is poor. The iron-arsenic residue contains a high amount of cobalt and needs to be pickled and washed before being discarded.