Novel cathode structure of aluminum cell

A cathode structure, aluminum electrolytic cell technology, applied in the field of aluminum electrolytic cell structure and current supply device, can solve the problems of uneconomical, huge electric power of auxiliary power supply, etc., achieve the effect of saving consumption, simple configuration, and ensuring stable operation

Inactive Publication Date: 2009-08-05
NORTHEASTERN UNIV ENG & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current intensity of modern large-scale aluminum electrolytic cells has reached 300-500KA or even higher. If the above method is adopted, the materials required for the auxiliary power supply and the compensation busbar and the consumed electric energy will be extremely huge. Obviously, in economically uneconomical

Method used

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  • Novel cathode structure of aluminum cell
  • Novel cathode structure of aluminum cell

Examples

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Effect test

Embodiment 1

[0016] Example 1 The cathode structure of a 300KA aluminum electrolytic cell

[0017] For the 300KA aluminum electrolytic cell, the length of the long cathode carbon block is 3200-3850 mm, and the width is 450-700 mm; the length of the short cathode carbon block is 1200-1800 mm, and the width is 450-700 mm. The number (M) of short cathode carbon blocks in the whole electrolyzer is 4 to 6 groups; the number (N) of long cathode carbon blocks is 24 to 30 groups.

Embodiment 2

[0018] Example 2 Cathode structure of 360KA aluminum electrolytic cell

[0019] For the 360KA aluminum electrolytic cell, the length of the long cathode carbon block is 3200-3850 mm, and the width is 450-700 mm; the length of the short cathode carbon block is 1200-1800 mm, and the width is 450-700 mm. The number (M) of short cathode carbon blocks in the whole electrolyzer is 4 to 6 groups; the number (N) of long cathode carbon blocks is 24 to 30 groups.

Embodiment 3

[0020] Example 3 Cathode structure of 400KA aluminum electrolytic cell

[0021] For the 400KA aluminum electrolytic cell, the length of the long cathode carbon block is 3200-3850 mm, and the width is 450-700 mm; the length of the short cathode carbon block is 1200-1800 mm, and the width is 450-700 mm. The number (M) of short cathode carbon blocks in the whole electrolyzer is 6-8 groups; the number (N) of long cathode carbon blocks is 24-32 groups.

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Abstract

The invention relates to a novel cathode structure of an aluminum electrolytic bath, which comprises a bath casing, cathode carbon blocks, cathode steel rods and a lining structure and is characterized in that the cathode carbon blocks and the cathode steel rods are respectively grouped into a long group and a short group, wherein the long cathode carbon block group is mounted and arranged in the middle of the electrolytic bath and is parallel to the short axis of the electrolytic bath, and the short cathode carbon block group is mounted and arranged at both ends of the electrolytic bath and is perpendicular to the long cathode carbon blocks. The novel cathode structure of the aluminum electrolytic bath is characterized in that the cathode structure and the configuration mode are changed to realize the automatic compensation of magnetic fields in the electrolytic bath, i.e., the vertical magnetic fields generated by the long cathode carbon block group at the four corners of the electrolytic bath are compensated by magnetic fields generated by the end short cathode carbon block group at the corners. The invention realizes the automatic compensation in the electrolytic bath and can simply configure magnetic fields around the electrolytic bath so as to ensure the stable operation of the aluminum electrolytic bath, greatly save the consumption of buses and have obviously economic benefits.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolytic cell structure and current supply device, and provides a cathode structure and a bus bar configuration scheme of a large aluminum electrolytic cell. Background technique [0002] As the current intensity of the aluminum electrolytic cell series increases, the magnetic field strength in the cell becomes larger and larger. At present, the stability of magnetic fluid has become the main factor limiting the expansion of electrolyzer and stable production. In order to achieve the stability of the magnetic fluid in the electrolytic cell, a large number of aluminum busbars around the cell have to be used to reasonably distribute the current direction and realize the stability of the magnetic fluid in the cell. However, the distribution of the magnetic field inside the large horizontally arranged electrolyzers is characterized by the structural characteristics of the large electrolyzers, wh...

Claims

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Application Information

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IPC IPC(8): C25C3/08
Inventor 戚喜全吕定雄周锦泉毛宇刘敬雄王德全
Owner NORTHEASTERN UNIV ENG & RES INST CO LTD
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