首页 | 本学科首页   官方微博 | 高级检索  
     

湿法炼锌废渣中硫脲浸出银的动力学
引用本文:胡天觉,曾光明,袁兴中.湿法炼锌废渣中硫脲浸出银的动力学[J].中国有色金属学报,2001,11(5):933-937.
作者姓名:胡天觉  曾光明  袁兴中
作者单位:湖南大学环境科学与工程系,
基金项目:湖南省科委资助项目(99SSY1005-4)
摘    要:探讨了从湿法炼锌废渣中用硫脲浸出回收银的浸出反应动力学,从这种难浸的含银炼锌废渣中用硫脲浸出回收银,浸出反应是一种典型的氧化还原反应并可充分进行,同时,通过动力学推导得出,从湿法炼锌废渣中用硫脲浸出银的反应动力学模型为收缩核动力学模型,同时计算出浸出活化能为13.26kJ/mol。该模型反映了浸出过程中控制整个反应速率的决定步骤是固膜扩散速率,并较好地说明了浸出机理。

关 键 词:炼锌废渣  浸出动力学  收缩核模型  活化能  硫脲    回收
文章编号:1004-0609(2001)05-0933-05
修稿时间:2000年10月10

Leaching kinetics of silver extracted by thiourea from residue in hydrometallurgy of zinc
HU Tian jue,ZENG Guang ming,YUAN Xing zhong.Leaching kinetics of silver extracted by thiourea from residue in hydrometallurgy of zinc[J].The Chinese Journal of Nonferrous Metals,2001,11(5):933-937.
Authors:HU Tian jue  ZENG Guang ming  YUAN Xing zhong
Abstract:The leaching kinetics of silver extracted by thiourea solution from a leached residue in the hydrometallurgy of zinc was studied. The leaching reaction is a typical oxido reduction reaction, and the leaching kinetics can be expressed by the shrinking core model. The leaching mechanism is fairly explained by the model, and the model is consistent with the experimental results. The activation energy is calculated according to the Arrhenius equation and activation energy is 13.26?kJ/mol.
Keywords:leached residue  leaching kinetics  shrinking core model  activation energy
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号