无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2025, Vol. 57 ›› Issue (6): 9-17.doi: 10.19964/j.issn.1006-4990.2024-0170

• 综述与专论 • 上一篇    下一篇

铝电解含氟固废处理技术研究进展

王丹琴1(), 练以诚1, 杜心1, 闫飞飞1, 刘万超1, 任武荣2()   

  1. 1.中铝环保节能集团有限公司技术中心,北京 102299
    2.航天工程大学基础部,北京 101407
  • 收稿日期:2024-03-27 出版日期:2025-06-10 发布日期:2024-12-12
  • 通讯作者: 任武荣(1985— ),男,博士,研究方向为功能材料;E-mail:renwurong@163.com
  • 作者简介:王丹琴(1984— ),女,博士,研究方向为固废资源化利用;E-mail:wdanqin@163.com
  • 基金资助:
    北京市科学技术协会金桥工程项目(Zlhbyjy108202407013);中铝集团第二批青年科技人才培养计划项目(2024)

Research progress on treatment technology for fluorine-containing solid wastes of electrolytic aluminum

WANG Danqin1(), LIAN Yicheng1, DU Xin1, YAN Feifei1, LIU Wanchao1, REN Wurong2()   

  1. 1. Technical Center of China Aluminum Environmental Protection and Energy Conservation Group Co. ,Ltd. ,Beijing 102299,China
    2. Basic Department of Aerospace Engineering University,Beijing 101407,China
  • Received:2024-03-27 Published:2025-06-10 Online:2024-12-12

摘要:

综述了湿法和火法技术在处理铝电解炭渣、大修渣及富余电解质等含氟固废方面的应用现状,概括了两种技术的优劣势。湿法处理技术通过选择合适的反应剂,在特定条件下将氟、铝等元素浸出至液相,再经沉淀、煅烧等步骤制备氟化铝产品,但产品质量和性质仍需进一步提升;火法处理技术则侧重于在高温条件下将氟转化为氟化盐产品以实现氟元素回收,不过其高温条件下对设备的腐蚀问题限制了其规模化应用。对铝电解工业含氟固废安全有效、高值化利用技术的持续开发具有重要意义。目前相关工作主要集中在采用化学方法提取和利用含氟固废中的有价元素,未来需探索其他新型处理方式,开发更多种类产品,以实现含氟固废的低成本、规模化利用。

关键词: 铝电解, 含氟, 固废, 处理

Abstract:

The current applications of hydrometallurgical and pyrometallurgical technologies in the treatment of fluorine-containing solid wastes such as carbon slag,spent pot lining and aluminum electrolytes were reviewed.The advantages and disadvantages of these two technologies were outlined.Hydrometallurgical treatment involved selecting appropriate reagents to leach fluorine,aluminum,and other elements into the liquid phase under specific conditions,and then preparing aluminum fluoride products through steps such as precipitation and calcination.However,the quality and properties of the products still needed further improvement.Pyrometallurgical treatment focused on converting fluorine into fluorides under high-temperature conditions to achieve fluorine recovery.However,the corrosion of equipment under high-temperature conditions limited its large-scale application.It was of great significance for the continuous development of safe,effective,and high-value utilization technologies for fluorine-containing solid wastes in China's aluminum electrolysis industry.Current work was mainly concentrated on using chemical methods to extract and utilize valuable elements from fluorine-containing solid wastes.In the future,it was necessary to explore other new treatment methods,develop a wider variety of products,and achieve low-cost and large-scale utilization of fluorine-containing solid wastes.

Key words: aluminum electrolysis, fluorine-containing, solid waste, treatment

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