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。
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.
作者
田源
孙彬彬
童俊
鹿慧
蒋家超
TIAN Yuan;SUN Binbin;TONG Jun;LU Hui;JIANG Jiachao(School of Environment Science and Spatial Informatics,China University of Mining and Technology,Xuzhou Jiangsu 221116,China;Hebei Province ZhongLian Energy Environmental Protection Technology Co.Ltd.,Shijiazhuang Hebei 050056,China)
出处
《化工环保》
CAS
CSCD
北大核心
2018年第4期476-480,共5页
Environmental Protection of Chemical Industry
基金
徐州市社会发展应用基础研究计划项目(KC16SG260).
关键词
电镀锡阳极泥
碱浸
浸出动力学
tin-plating anode slime
alkaline leaching
leaching kinetics
