全石墨化阴极铝电解槽电压管理  

Voltage Management of Fully Graphitized CathodeAluminum Reduction Cells

作　　者：罗冠峰 余龙进 曾振双 LUO Guanfeng;YU Longjin;ZENG Zhenshuang(Guangxi Hualei New Material Co.,Ltd.,Baise 531499,China)

机构地区：[1]广西华磊新材料有限公司,广西百色531499

出　　处：《绿色矿冶》2025年第2期68-74,共7页Sustainable Mining and Metallurgy

摘　　要：为了提高电流效率、降低吨铝电耗、延长铝电解槽寿命,某电解铝厂使用全石墨化阴极替换原有500 kA铝电解槽的50%石墨质阴极。由于全石墨化阴极具有导电率高、导热性高、抗钠侵蚀能力强、热膨胀系数小的特点,生产过程中全石墨化阴极铝电解槽与50%石墨质阴极铝电解槽的电压管理有所差异。本文针对500 kA系列全石墨化化阴极铝电解槽生产中出现的焙烧阶段电压跃升、非正常期内噪声值高、正常生产期内出现冷槽等异常现象,进行原因分析,并给出各时期的电压管理应对策略。In order to improve the current efficiency,reduce the power consumption per ton of aluminum and prolong the service life of aluminum reduction cells,an electrolytic aluminum plant used a fully graphitized cathode to replace the 50%graphite cathode of the original 500 kA aluminum reduction cell.Because the fully graphitized cathode has the characteristics of high conductivity,high thermal conductivity,strong resistance to sodium erosion and small thermal expansion coefficient,the voltage management of the fully graphitized cathode aluminum electrolytic cell is different from that of the 50%graphite cathode aluminum electrolytic cell in the production process.In this paper,the causes of abnormal phenomena such as voltage jump in roasting stage,high noise value in abnormal period and cold tank in normal production period in the production process of 500 kA series fully graphitized cathode aluminum electrolytic cell were analyzed,and the voltage management strategies in each period were given.

关 键 词：全石墨化阴极 石墨质阴极 铝电解 电压管理 

分 类 号：TF821[冶金工程—有色金属冶金]