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卤素法电镀锡阳极泥中锡的碱浸回收及动力学分析
引用本文:田源,孙彬彬,童俊,鹿慧,蒋家超. 卤素法电镀锡阳极泥中锡的碱浸回收及动力学分析[J]. 化工环保, 2018, 38(4): 476-480
作者姓名:田源  孙彬彬  童俊  鹿慧  蒋家超
作者单位:1. 中国矿业大学 环境与测绘学院,江苏 徐州 221116;2. 河北省众联能源环保科技有限公司,河北 石家庄 050056
基金项目:徐州市社会发展应用基础研究计划项目(KC16SG260)
摘    要:以NaOH溶液为浸出剂,采用碱浸法回收卤素法电镀锡阳极泥中的锡,考察了浸出效果的影响因素,并对浸出过程的动力学进行了研究。实验结果表明:在NaOH质量浓度200 g/L、反应温度90℃、液固比6、反应时间240 min的最佳工艺条件下,锡的浸出率约为98%;最佳工艺条件下,浸出液中的氟离子对后续锌粉置换回收锡没有影响;在303.15~363.15 K范围内,该浸出过程主要受内扩散控制,反应活化能为9.725 k J/mol。

关 键 词:电镀锡阳极泥  碱浸  浸出动力学  
收稿时间:2017-12-01

Recovery of tin from tin-plating anode slime by halogen method via alkaline leaching and its kinetics analysis
TIAN Yuan,SUN Binbin,TONG Jun,LU Hui,JIANG Jiachao. Recovery of tin from tin-plating anode slime by halogen method via alkaline leaching and its kinetics analysis[J]. Environmental Protection of Chemical Industry, 2018, 38(4): 476-480
Authors:TIAN Yuan  SUN Binbin  TONG Jun  LU Hui  JIANG Jiachao
Affiliation:1. School of Environment Science and Spatial Informatics,China University of Mining and Technology,Xuzhou Jiangsu 221116,China;2. Hebei Province ZhongLian Energy Environmental Protection Technology Co. Ltd.,Shijiazhuang Hebei 050056,China
Abstract:Tin in anode slime from tin-plating by halogen method,was recovered by alkali leaching with NaOH solution as leaching agent. The influence factors and kinetics of the leaching process were investigated. The experimental results showed that:Under the optimum process conditions of NaOH mass concentration 200 g/L,leaching temperature of 90 ℃,liquid-solid ratio 6 and leaching time 240 min,the leaching rate of tin was about 98%,and fluorine ion in the leached solution had no effect on tin recovery by replacement with zinc powder;In the range of 303.15-363.15 K,the leaching process was controlled by the inner diffusion and the apparent activation energy was 9.725 kJ/mol.
Keywords:tin-plating anode slime  alkaline leaching  leaching kinetics  
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