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首页> 外文期刊>JOM >Impact of the Usage of a Slotted Collector Bar on Thermoelectric Field in a 300-kA Aluminum Reduction Cell
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Impact of the Usage of a Slotted Collector Bar on Thermoelectric Field in a 300-kA Aluminum Reduction Cell

机译：开槽集电器的使用对300kA铝电解槽中热电场的影响

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摘要

The horizontal current in a metal pad is critical because of its effect on the aluminum reduction cell current efficiency and energy consumption. A type of slotted collector bar was considered to have great potential to reduce the horizontal current. The effects of the slotted collector bar on the horizontal current in the metal pad, current, and temperature distribution in the cathode carbon and collector bar were simulated using the finite-element method. The results show that the maximum current at the middle of the metal pad decreases from 11,940 A m(-2) to 9490 A m(-2) and the peak of current density (the maximum current density) shifts toward the cell side. Moreover, the maximum horizontal current and average horizontal current at the middle of the metal pad in the cell with slotted collector bar decreases by similar to 50% and 50.9%, respectively. However, the cathode voltage in the cathode with the slotted collector bar is similar to 53 mV higher than that in the conventional cell, and the temperature in the slotted collector bar is higher than that in the conventional cathode. The results of this study may provide the database in understanding the effect of the slotted collector bar on cell.
机译：金属焊盘中的水平电流至关重要，因为它会影响铝还原电池的电流效率和能耗。一种开槽的集流条被认为具有降低水平电流的巨大潜力。使用有限元方法模拟了开槽的集电极条对金属焊盘中的水平电流，阴极碳和集电极条中的电流以及温度分布的影响。结果表明，金属焊盘中间的最大电流从11,940 A m（-2）减小到9490 A m（-2），并且电流密度的峰值（最大电流密度）移向电池侧。此外，带有集电极条的电池单元中金属焊盘中间的最大水平电流和平均水平电流分别减少了约50％和50.9％。然而，具有开槽的集电极条的阴极中的阴极电压比常规电池高约53mV，并且开槽的集电极条中的温度高于常规阴极中的温度。这项研究的结果可能为理解带槽收集器条对细胞的影响提供数据库。

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