钴渣中三价钴的还原浸出试验研究  

The Experimental Study on Reduction Leaching of Trivalent Cobalt in Cobalt Slag

作　　者：彭学斌 戴永年[3] 曲涛[3] 田林[1,2] 翟忠标 PENG Xue-bing;DAI Yong-nian;QU Tao;TIAN Lin;ZHAI Zhong-biao(Kunming Metallurgical Research Institute, Kunming, Yunnan 650031, China;State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources, Kunming, Yunnan 650031, China;Metallurgy and energy engineering college, Kunming University of Science and Technology, Kunming, Yunnan 650093, China)

机构地区：[1]昆明冶金研究院,云南昆明650031 [2]共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南昆明650031 [3]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《云南冶金》2019年第1期45-48,共4页Yunnan Metallurgy

摘　　要：研究了电积钴生产过程产出的氧化钴渣中三价钴的还原浸出工艺。试验结果表明,在液固比6∶1,浸出温度60～70℃,浸出终点pH=3.5,反应时间60min,搅拌转速300r/min,加入2.5倍钴量(摩尔比)的还原剂亚硫酸钠再浸出120min,钴的最高浸出率达到99.86%。The study is carried out for the reduction leaching process of trivalent cobalt in cobalt oxide slag in the production process of electrodeposition cobalt. The test results show, when the liquid-solid ratio is 6:1, the leaching temperature is 60~70℃, leaching end pH shall be controlled in 3.5, the reaction time is 60 min, the rotating speed is 300 r/min, The reducing agent sodium sulfite with the 2.5 times volume of cobalt(molar ratio) shall be added, and leaching for 120 min again, the maximum leaching rate of cobalt can reach to 99.86%.

关 键 词：氧化钴渣 亚硫酸钠 还原浸出 浸出率 

分 类 号：TF816[冶金工程—有色金属冶金]