利用湿法炼锌铜砷渣净化除钴  

Purification and Removal Cobalt with Copper-Arsenic Precipitation from Zinc Hydrometallurgy

作　　者：孙朴 邓志敢[1] 魏昶[1] 李兴彬[1] 李旻廷[1] 李存兄[1] SUN Pu;DENG Zhigan;WEI Chang;LI Xingbin;LI Minting;LI Cunxiong(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《有色金属工程》2020年第9期59-65,共7页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(51964029,51804146);国家重点研发计划项目(2018YFC1900402);云南省应用基础研究计划项目(2020FB081)。

摘　　要：针对砷盐净化除钴工艺,以云南某厂的湿法炼锌浸出的中上清液为原料,以湿法炼锌产出铜砷渣作为净化除钴剂,开展了利用湿法炼锌铜砷渣净化除钴研究,考察了时间、两段净化除钴和不同添加剂对净化除钴效果的影响。结果表明,在反应温度95℃、反应时间3 h、锌粉用量3 g/L溶液、铜砷渣用量2 g/L溶液、铜离子浓度400 mg/L条件下,可将中上清液中的钴含量降低到小于0.01 mg/L,可以实现深度净化除钴的效果。In view of the process of cobalt removal via arsenic salt purification,a study was carried out on the purification and cobalt removal with copper-arsenic precipitation from a zinc hydrometallurgy plant in Yunnan Province.The effects of two-stage purification,different time and different additives on the purification and removal cobalt were investigated.The experimental results show that the cobalt content in the medium supernatant could be reduced to less than 0.01 mg/L,with reaction temperature of 95℃,reaction time of 3 h,zinc powder dosage of 3 g/L,copper-arsenic precipitation dosage of 2 g/L and copper ion concentration of 400 mg/L,which can achieve the effect of deep purification and removal cobalt.

关 键 词：湿法炼锌 铜砷渣 净化除钴 

分 类 号：TF813[冶金工程—有色金属冶金]