水钴矿中选择性提取铜和钴的新工艺  

Novel process of selective extraction of copper and cobalt from heterogenite

作　　者：郭学益[1] 姚标[1] 李晓静[1] 石文堂[1] 田庆华[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083

出　　处：《中国有色金属学报》2012年第6期1778-1784,共7页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(51104181);中国博士后科学基金资助项目(20110491279);中央高校基本科研业务费(2011QNZT071)

摘　　要：针对某水钴矿的特点,采取还原酸浸旋流电积新工艺选择性提取其中的铜和钴。系统考察初始硫酸浓度、温度、时间、Na2SO3用量、液固比等因素的影响,确定浸出最佳条件如下:初始硫酸浓度为75g/L,Na2SO3用量为7%,液固比L/S=4 mg/L,温度为70℃,时间为0.5 h。对浸出液进行了旋流电积提取铜和钴的探索实验研究,得到纯度分别为99.95%、99.97%的电积铜、钴产品,铜、钴的直收率分别达到98.23%和94.54%。Based on the characteristics of the tested heterogenite, a novel process for extracting copper and cobalt using reductive acid leaching-cyclone electrowining was carried out. The effects of initial concentration sulfate, temperature, time, NazSO3 dosage, the liquid-solid ratio were systematically investigated. The optimum leaching conditions were determined as the initial concentration sulfate 75 g/L, Na2SO3 dosage 7%, the liquid-solid ratio of 4：1, temperature 70℃ and leaching time 0.5 h. The exploratory experiment of extracting copper and cobalt from the leaching solution was conducted, and the electrolytic copper and cobalt products with high purity of 99.95% and 99.97% are obtained, respectively. The direct recovery rate of copper and cobalt are 98.23% and 94.54%, respectively.

关 键 词：水钴矿 还原酸浸 旋流电积 钴 铜 

分 类 号：X781.1[环境科学与工程—环境工程] TF803.27[冶金工程—有色金属冶金]