锗烟尘中氧化锌浸出过程动力学研究  

Study on Kinetics of Acid Leaching of Germanium Oxide Dust

作　　者：梁杰[1] 郑东升[1] 韦丽萍[1] 

机构地区：[1]贵州工业大学科技处,贵州贵阳550003

出　　处：《贵州工业大学学报（自然科学版）》2004年第4期43-46,共4页Journal of Guizhou University of Technology(Natural Science Edition)

基　　金：国家教育部科学技术研究重点项目(2003地方03116);贵州省省长资金(2003)资助项目

摘　　要：对锗烟尘中氧化锌酸浸的动力学和反应机制进行了研究。结果表明,锗烟尘中氧化锌酸浸属于生成固体产物层的"未反应核缩减型"模型,动力学方程遵从1-2a/3-(1-a)2/3=kt,锗烟尘中氧化锌酸浸的反应为一级反应,其表观活化能11.442kJ/mol,浸出过程为扩散步骤所控制。提高酸的浓度、温度、搅拌强度均可加快锌浸出速度,提高浸出率。Based on characteristic of zinc oxide of germanium oxide dust,the kinetics and reactive mechanism of acid leaching have been studied.The results shows that the acid leaching of germanium oxide dust belongs to the model of 'unreactive atrophic nuclear' type which conforms to the kinetic equation:1-2a/3-(1-a)^(2/3)=kt,and the leaching process is controlled by diffusion procedures.Thus,the leaching rate and recovery can be improved by increasing the concentration and temperature and intensity of machine stir of sulfuric acid.

关 键 词：锗烟尘 氧化锌 动力学 浸出率 研究 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF843