反极性期间由于铝合金作为阴极，阴极压降大电弧产热量也增大。
When Al alloy is used to be negative electrode, negative voltage produced more heat.
本文结合铝电解生产实践，从启动后期的主要生产管理入于，浅析阴极压降的有效控制。
Combined aluminum production practices, and started with the main production and management of startup latter part, the effective control of the cathode voltage drop was analysed.
电解槽寿命越长，电解槽的大修分摊成本越低；但随着电解槽槽龄增加，阴极压降的上升和电流效率的降低会造成吨铝电耗增加。
But the energy consumption will increases at the same time with the increase of pot life because of the increase of cathode voltage drops and of the decrease of current efficiency.
电解槽寿命越长，电解槽的大修分摊成本越低；但随着电解槽槽龄增加，阴极压降的上升和电流效率的降低会造成吨铝电耗增加。
But the energy consumption will increases at the same time with the increase of pot life because of the increase of cathode voltage drops and of the decrease of current efficiency.
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