AnodeAnode changing, a major production operation in aluminum electrolysisAluminum electrolysis, is the primary cause of zone anode currentZone anode current fluctuations in reduction cellsReduction cell, significantly reducing the zone’s anodeAnode current. As the new anodeAnode heats up and participates in electrochemical reactions, the zone current gradually recovers. During recovery, the zone anode currentZone anode current curve may show one or more of three stages: linear, steady, and step-up. The steady stage likely stems from slow dissolutionDissolution of solidified electrolyteElectrolyte on the new anodeAnode surface, while the step-up stage (≈6.2 kA) mostly results from anodeAnode changing in an adjacent zone. AnodeAnode current recoveryCurrent recovery in the anode changeAnode change zone falls into three modes. Among them, the linear-based mode (about 35%) is the most ideal recovery mode, and the determination coefficient R2 of linear fitting for the recovery curve is ≥ 0.8; the steady-based mode (about 23%) includes a steady stage in addition to a linear stage; the step-up-based mode (about 42%) includes one or more step-up stages, and more than 75% of the step-up-based curves also include a steady stage. These characteristics of zone anode currentZone anode current recovery can provide a basis for further improving electrolytic production operations and stabilizing reduction cellsReduction cell.