Bath-metal interface oscillation reduces the stability and efficiency of Hall-Héroult cells. However, the oscillation characteristics have not been understood in detail. A well-designed probe and an online monitor system were designed for monitoring the metal fluctuation. Experiments and analyses show the metal fluctuation can be captured, and a corresponding relationship between anode-cathode distance (ACD) and anode rod voltage drop (UD) have been found. The stack phenomena of the fluctuation have been found as well. Analysis shows that the wave length (around 8 m in this experiment) is much bigger than the anode size; however, the wave velocity (around 0.27 m/s in this experiment) is relatively low. Because of the waves transmitting, anode current changes periodically but the cell voltage remains near constant when the metal is fluctuating.
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机译：镀液-金属界面的振荡降低了霍尔-埃洛尔电池的稳定性和效率。然而，尚未详细了解振荡特性。设计了精心设计的探针和在线监测系统，用于监测金属波动。实验和分析表明，可以捕获金属波动，并发现阳极-阴极距离（ACD）与阳极棒电压降（U D ）之间存在对应关系。还发现了波动的叠加现象。分析表明，波长（在本实验中约为8 m）远大于阳极尺寸。但是，波速（本实验中约为0.27 m / s）相对较低。由于波的传播，阳极电流会周期性变化，但是当金属波动时，电池电压保持接近恒定。
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