石墨化阴极在400kA系列电解槽的应用

作为以电力、炭阳极、氧化铝为主力需求的高耗能电解铝企业,为积极响应国家“碳达峰,碳中和”战略目标,某公司率先通过技改措施以达到减碳降耗,采用高导电钢棒、高导电石墨化阴极炭块、强保温底层内衬材料等优化改造方案提高电能利用率,降低综合电耗。以400 kA系列铝电解槽为研究对象,探索石墨化阴极内衬在400 kA系列电解槽上的生产应用研究。石墨化阴极炭块相比石墨质阴极炭块具有更优良的导电性和导热性,可以提高电流效率和电解槽稳定性,阴极压降、平均电压、效应系数和交直流电耗明显降低,电解槽槽寿命亦有所延长,实现了电解槽内衬优化、节能降耗的目标。

Application of Graphitized Cathode in 400 kA Series Electrolytic Aluminum Cell

As a high-energy-consuming electrolytic aluminum enterprise with power, carbon anode and alumina as the main demand, in order to actively respond to the national strategic goal of "carbon peak, carbon neutrality", a company took the lead in adopting technical reform measures to achieve carbon reduction and consumption reduction, using high-conductive steel rods, high-conductive graphitized cathode carbon blocks, strong insulation bottom lining materials and other optimization transformation programs to improve energy utilization and reduce comprehensive power consumption. The production and application of graphitized cathode liner in 400 kA electrolytic aluminum cell were studied. Compared with graphite cathode carbon block, graphitized cathode carbon block has better electrical and thermal conductivity, which can improve the current efficiency and the stability of the electrolyzer. The cathode voltage drop, average voltage, effect coefficient and AC/DC power consumption were significantly reduced, and the life of the electrolyzer cell was also extended, achieving the goal of optimizing the lining of the electrolyzer and reducing energy consumption.