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›› 2013, Vol. 13 ›› Issue (4): 615-620.

• 反应与分离 • 上一篇    下一篇

铅膏在柠檬酸-柠檬酸钠体系中的浸出过程

朱新锋 杨家宽 孙晓娟 张伟 胡雨辰 李磊 郭一飞 陈松涛   

  1. 河南城建学院市政与环境工程系 华中科技大学环境科学与工程学院 华中科技大学环境科学与工程学院 华中科技大学环境科学与工程学院 华中科技大学环境科学与工程学院 河南城建学院市政与环境工程系 华中科技大学环境科学与工程学院
  • 收稿日期:2013-05-03 修回日期:2013-06-21 出版日期:2013-08-20 发布日期:2013-08-20
  • 通讯作者: 朱新锋

Leaching Process of Spent Lead Paste in Citric Acid-Sodium Citrate System

ZHU Xin-feng YANG Jia-kuan SUN Xiao-juan ZHANG Wei HU Yu-chen LI Lei GUO Yi-fei CHEN Song-tao   

  1. Department of Environmental and municipal Engineering, Henan University of Urban Construction College of Environmental Science and Engineering, Huazhong University of Science & Technology College of Environmental Science and Engineering, Huazhong University of Science & Technology College of Environmental Science and Engineering, Huazhong University of Science & Technology College of Environmental Science and Engineering, Huazhong University of Science & Technology Department of Environmental and municipal Engineering, Henan University of Urban Construction College of Environmental Science and Engineering, Huazhong University of Science & Technology
  • Received:2013-05-03 Revised:2013-06-21 Online:2013-08-20 Published:2013-08-20
  • Contact: ZHU Xin-feng

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摘要： 研究了铅酸蓄电池废铅膏在柠檬酸-柠檬酸钠体系中浸出过程中形貌及成分的变化. 结果表明，浸出过程中PbO2与PbO在1 h内完全反应，而PbSO4反应相对较慢，反应1 h脱硫率为36.2%，8 h脱硫完全. 浸出过程中PbSO4颗粒不断变小，PbSO4生成柠檬酸铅的过程为缩核反应，起初阶段柠檬酸铅为絮状颗粒，随反应进行，颗粒逐渐长大，最终为板状结构.

关键词: 铅膏, 浸出, 柠檬酸-柠檬酸钠体系, 柠檬酸铅

Abstract: The leaching process of spent lead paste in citric acid and sodium citrate system was studied. During the leaching process, the variation of morphology and composition of reactants was investigated by SEM/EDX. The results show that PbO2 and PbO can be completely transformed into lead citrate within 1 h, while PbSO4 reacts relatively slowly with a desulfurization rate of 36.2% in 1 h and can be completely transformed in 8 h leaching. During the reaction process, the particle size of PbSO4 reduces continuously, which indicates that the leaching process of PbSO4 may comply with a core-shrinking model. And lead citrate, the leaching product with an initial morphology of flocculent, gradually grows up in the final plate structure.

Key words: lead paste, leaching, citric acid-sodium citrate system, lead citrate

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