碳酸铜矿中钴的选择性浸出.pdfVIP

无机盐工业 第 42 卷 第 1期 50 　　　　　　INOR GAN IC CH EM ICAL S INDU STRY　　　　　　　　 20 10年 1月 环境 ·健康 ·安全 碳酸铜矿中钴的选择性浸出 齐美富 ,陈 瑛 (南昌大学环境与化学工程学院 ,江西南昌 330029) 　　摘 　要 :对碳酸铜矿中铜 、钴浸出过程的反应及行为进行了分析 。在大量实验的基础上 ,结合理论分析 ,探讨 了浸出条件对矿样中钴选择性浸出的影响 ,进而确定了钴选择性浸出的实验室最佳条件为 :浸出时间 3 h,浸出温 度 70 ℃以上 , pH 为 5,液固体积比为 5 ∶1,浸出液中添加质量浓度为 27. 11 g/L 的硫酸铜溶液 1. 5 mL 。实验结果表 明 ,该条件下钴的浸出率可达到 78. 37% ,铜的浸出率仅为 0. 04 % ,实现了钴与铜的有效分离 ,可以优先浸出钴 ,实 现钴资源的充分利用 。 　　关键词 : 碳酸铜矿 ; 钴 ;选择性浸出 　　中图分类号 : TQ 131. 2 1　　文献标识码 : A 　　文章编号 : 1006 - 4990 (20 10) 01 - 0050 - 03 Selectively leach ing of coba lt from copper carbona te ore Q i M eifu , Chen Ying (S chool of Environm en ta l and Chem ica l Eng ineering, N anchang Un ivers ity, N anchang 330029, Ch ina) 　　Ab stract: Study of selectively leach ing cobalt from copp er carbonate ore has been carried out. R eaction and behavior during the copp er and cobalt leach ing p roce ss were analyzed. Effects of the leach ing condition s of selectively leach ing p roce ss were exp erim entally investigated and the op tim um laboratory condition s were confirm ed a s follow s: leach ing tim e was 3 h, leach ing temp erature was above 70 ℃, pH wa s 5, vo lum e ratio of liqu id to solid wa s 5 ∶1, and the amount of CuSO4 at the m ass concentration of 27. 11 g/L was 1. 5 mL. R e su lts showed that the leach ing rate of cobalt was 78. 37% and the leac h ing rate of copp er was ju st 0. 04% under the above condition s. Effective sep aration of copp er and cobalt wa s realized and cobalt can be p referentially leached out so as to ach ieve the fu ll utilization of resou rces. 　　Key