500 kA铝电解槽阴极破损分析及对策  

Cathode Damage Analysis and Countermeasures of 500 kA Aluminum Reduction Cells

作　　者：周媛 余龙进 曾振双 ZHOU Yuan;YU Longjin;ZENG Zhenshuang

机构地区：[1]广西华磊新材料有限公司,广西平果531499

出　　处：《绿色矿冶》2023年第4期50-54,共5页Sustainable Mining and Metallurgy

摘　　要：某电解铝厂500 kA铝电解槽由于电磁场、热平衡设计不合理,工艺运行参数不匹配,电解槽早期破损严重,给电解槽长寿命、高效率运行带来巨大的风险。本文通过对电解槽进行解剖,深入分析电解槽阴极炭块破损机理,可知电解槽早期破损主要分为槽壳变形、阴极炭块破损、侧部破损等几大类。为了解决阴极破损问题,在不改变阴极母线结构的前提下对电解槽内衬、工艺技术参数等方面进行深度优化,最终有效解决了电解槽早期破损的问题,实现了延长电解槽寿命的目的。Due to the unreasonable design of electromagnetic field and heat balance,the mismatch of process operation parameters,the 500 kA aluminum electrolytic cell in an electrolytic aluminum plant has serious early damage problem,it brings great risk to the long life and high efficiency operation of electrolytic cell.In this paper,through the anatomy of the electrolytic cell,the damage mechanism of the cathode carbon block of the electrolytic cell was deeply analyzed.It can be seen that the early damage of the electrolytic cell is mainly divided into several categories,such as the deformation of the tank shell,the damage of the cathode carbon block,and the damage of the side.In order to solve the problem of cathode damage,the lining and process technical parameters of the electrolytic cell were optimized in depth without changing the structure of the cathode busbar.Finally,the risk of early damage of the electrolytic cell was effectively solved,and the purpose of prolonging the service life of the electrolytic cell was realized.

关 键 词：电解槽破损 热平衡 槽壳变形 工艺管理 阴极炭块 

分 类 号：TF821[冶金工程—有色金属冶金]