Five power-on bus distributing style with different current

Abstract

The invention discloses a 5-point generatrix configuration method of a large-area inequipotential electricity type. It is composed of the cathode soft generatrix, cathode generatrix, bottom generatrix, side generatrix, lower column generatrix and electrobath. The lower column generatrix is 5-piece configuration. The invention not only can make the current passing every column appropriate and effectively reduce the magnetic field in the slot and the transverse magnetic field, but also match with every slot paramete of the large-scale slot. Especially compared with the two columns, the center columune has low current and is benefit to reduce the danger caused by the middle level magnetic field in the electrobath to make the electrobath more stable.

Description

Technical field: [0001] The invention relates to a power-feed configuration method for a bus bar of an aluminum electrolytic cell. technical background: [0002] At present, with the development of the prebaked electrolytic cell industry, 280-320KA class ultra-large-capacity aluminum electrolysis has become the preferred cell type for new large-scale aluminum factories in my country's aluminum industry. With the development and expansion of the capacity of the prebaked electrolytic cell, the lateral dimension of the entire cell becomes longer, and the important factor affecting the production stability of the electrolytic cell - the magnetic field distribution characteristics in the cell (requiring a small magnetic field value and a small gradient) becomes more important. If the current feeding method is still used (three or four points on the large surface), the amount of current passing through each column is too large, and the resulting horizontal magnetic field increases...

AI Technical Summary

Problems solved by technology

If the current feeding method is still used (three or four points on the large surface), the amount of current passing through each column is too large, and the resulting horizontal magnetic field increases sharply, causing the melt in the tank to be under the action of the magnetic field force. The uplift and fluctuation of the lower part lead to the destruction of the stability of the electrolytic cell and bring great harm to the production operation.

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