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›› 2014, Vol. 14 ›› Issue (4): 599-604.

• 反应与分离 • Previous Articles     Next Articles

Separation of Zn with As from Water Leaching Solution of High Arsenic Content Flue Dust

WANG Qian-qian LIU Jing-chong ZHU Yuan-yuan GUO Jiu-ji ZHAO Wei ZHAO Hui YU Ping QI Tao   

  1. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Processing Engineering, Chinese Academy of Science National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Processing Engineering, Chinese Academy of Science National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Processing Engineering, Chinese Academy of Science National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Processing Engineering, Chinese Academy of Science National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences School of Chemistry and Chemical Engineering, Shandong University Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2014-06-06 Revised:2014-07-10 Online:2014-08-20 Published:2014-08-20
  • Contact: WANG Qian-qian

高砷烟道灰预处理水浸液中锌砷分离

王倩倩 刘敬崇 朱媛媛 郭九吉 赵伟 张绘 于萍 齐涛   

  1. 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室 中国科学院过程工程研究所 中国科学院过程工程研究所 中国科学院过程工程研究所 山东大学化学与化工学院 中国科学院过程工程研究所绿色过程与工程重点实验室
  • 通讯作者: 王倩倩

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Abstract: The separation process of Zn with As from the water leaching solution of high arsenic content flue dust was studied. Based on the results of ferric sulfate route and calcium oxide route, a ferric sulfate-calcium oxide coupled separation route of Zn with As was proposed. The results show that under the optimal conditions of pH value 2, molar ratio of H2O2/As3+ 1.3:1, Fe3+/As5+ 1:1.5, Ca2+/As5+ 1.5:1, reaction temperature 70℃ and time 1.5 h, the As removal rate reaches more than 80% while the loss of Zn nearly is zero. The effective separation of Zn with As has been achieved in this new route.

Key words: flue dust, Zn, arsenic, separation, water leaching solution

摘要： 对经热水浸出的高砷烟道灰水浸液进行锌砷分离，基于单独使用Fe2(SO4)3和CaO除砷的实验结果，提出了Fe2(SO4)3-CaO耦合分离锌砷工艺. 结果表明，在溶液pH=2、摩尔比H2O2/As3+ 1.3:1, Fe3+/As5+ 1:1.5, Ca2+/As5+ 1.5:1及反应温度70℃、反应时间1.5 h的条件下，砷脱除率超过80%，锌没有损失，实现了锌砷高效分离.

关键词: 烟道灰, 锌, 砷, 分离, 水浸液

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