锌渣氧粉两段浸出铟的试验研究  

Test Research on Two-stages Leaching of Indium From Zinc Oxidation Slag

作　　者：谌斯[1] 杨利姣[1] 陈南春[1] 高军 刘显妙[1] 周翠澎[1] 朱晓岗[1] 

机构地区：[1]桂林理工大学广西矿冶与环境科学实验中心,有色金属及其材料加工新技术教育部重点实验室,材料科学与工程学院,广西桂林541004 [2]广西金山铟锗冶金化工有限公司,广西河池547200

出　　处：《湿法冶金》2013年第5期312-315,共4页Hydrometallurgy of China

摘　　要：研究了以两段浸出工艺从含铟锌渣氧粉中浸出铟。试验主要考察了两段酸性浸出中,硫酸初始质量浓度、浸出时间、液固体积质量比、温度、机械活化时间、氧化剂用量等对铟浸出率的影响。试验结果表明:中性浸出对铟有明显的富集作用,机械活化可以强化铟的浸出,常压氧化对铟的强化浸出效果不明显;在硫酸初始质量浓度300g/L、浸出时间3h、液固体积质量比3∶1、温度85℃、机械活化60min的最佳条件下,铟浸出率为90.9%。Leaching of indium from zinc oxidation slag by two-stages leaching process was studied. The effects of sulfuric acid initial concentration, leaching time, the ratio between liquid and solid, temperature, activated time and KMnO4 dosage on leaching of indium were examined. The results show that the indium is enriched in neutral leaching residue after first-stage leaching. Leaching of indium can be enhanced obviously by mechanical activation, but atmospheric oxidation doesn＇t improve the leaching of indium. The optimum leaching conditions in second-stage leaching process are sulfuric acid initial concentration of 300 g/L, leaching time of 3 h, the ratio between liquid and solid 3 ： 1, temperature of 85 ℃ ,mechanically activated of 60 min. Under the optimum conditions,leaching rate of indium is 90. 9%.

关 键 词：锌渣氧粉 中性浸出 酸性浸出 铟 

分 类 号：TF843.1[冶金工程—有色金属冶金]