400 kA铝电解槽全石墨化阴极的研究与应用OA

This study explores the application of fully graphitized cathodes in a 400 kA large aluminum electrolysis cell.Through material characteristic analysis,electrolytic cell structure optimization,and industrial experiments,it has been confirmed that the fully graphitized cathode has excellent conductivity,low thermal expansion coefficient,and strong resistance to sodium corrosion.The actual application results show that the current efficiency of the fully graphitized cathode electrolytic cell reaches 93.12%,which is 1.78 percentage points higher than that of the traditional cathode;Reduce DC power consumption by 489 kWh/t;The cathodic erosion rate is reduced by 53%,and the theoretical tank life is extended to 8～10 years;At the same time,the frequency of anode effect is reduced by 70%,significantly reducing greenhouse gas emissions and achieving a win-win situation of energy conservation,emission reduction,and economic benefits.