Aluminum cell bus-bar compensation structure with outlet at cell bottom

Abstract

The invention discloses an external busbar compensating structure for an aluminum cell the bottom of which is provided with outgoing lines, which belongs to the technical field of metallic aluminum electrolysis. The external busbar compensating structure for the aluminum cell is as follows: an external compensating busbar is respectively arranged on both ends of the prior aluminum cell along the potline current direction, and the current direction in the external compensating busbars is the same with the potline current direction; cell bottom cathode busbars the number of which corresponds to that of bottom electric cathode steel bars are arranged at the bottom of the cell, connected with the cathode steel bars and connected with each other through soft cathode strips; and the external compensating busbars and the cell bottom cathode busbars correct the magnetic field of the cell and compensate the magnetic field of cells in the adjacent row together. The external busbar compensating structure for the aluminum cell solves the problems of large use amount and complex configuration of the cathode busbars of each cell, reduces the use amount of the cathode busbars and the cell pitch, simplifies the design difficulty, is favorable to find out the optimum busbar configuration means, and easily makes magnetic field distribution and the stability of fused masses in the cell optimum.

Description

technical field [0001] The invention relates to a current supply device for an aluminum electrolytic cell, in particular to a compensation structure for a busbar of an aluminum electrolytic cell with wires coming out from the bottom of the cell. Background technique [0002] With the improvement of aluminum electrolytic cell design and operation technology level, the newly designed and constructed aluminum electrolytic cell at home and abroad is increasingly developing in the direction of large-scale. The series current will inevitably increase to 550KA to 700KA, or even above. However, with the increase of the series current, the influence of the magnetic field distribution generated by the current-carrying busbar and the melt current on the stability of the slot production and operation becomes more and more prominent. [0003] Therefore, in the design of large and super-large current tank busbars, its influence on the stability of the tank must first be considered. Thro...

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Problems solved by technology

[0004] However, at the level of series current from 550KA to 700KA, the stability of the electrolytic cell cannot be greatly improved only by improving the magnetic field distribution, which requires improving the current distribution in the aluminum liquid layer of the electrolytic cell

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