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Aluminum reduction cell cathode structure capable of lowering horizontal current of molten aluminum and maximum surface current of cathode carbon block simultaneously

A cathode carbon block and cathode structure technology, applied in the field of aluminum electrolytic cells, can solve problems such as increasing investment costs, and achieve the effects of prolonging life, reducing horizontal current, and increasing current efficiency

Inactive Publication Date: 2017-07-07
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Substantial modifications to the electrolyzer are required, increasing investment costs

Method used

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  • Aluminum reduction cell cathode structure capable of lowering horizontal current of molten aluminum and maximum surface current of cathode carbon block simultaneously
  • Aluminum reduction cell cathode structure capable of lowering horizontal current of molten aluminum and maximum surface current of cathode carbon block simultaneously
  • Aluminum reduction cell cathode structure capable of lowering horizontal current of molten aluminum and maximum surface current of cathode carbon block simultaneously

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as image 3 Shown is a schematic cross-sectional view of two carbon blocks of the present invention connected by insulating paste in the horizontal direction and conductive paste in the vertical direction. It is composed of cathode carbon block 1, insulating paste 2, cathode carbon block 2 3, conductive paste 1 4, conductive paste 2 5 and cathode steel rod 6. In this embodiment, the height of cathode carbon block 1 is 400-650 mm, the height of cathode steel rod 6 is 65-200 mm, and a horizontal insulating paste 2 is added between cathode carbon block 1 and cathode carbon block 2 to insulate The thickness of the paste is 5-20 mm, the length of the insulating paste is 50-500 mm, and the conductive paste 2 5 is added between the cathode carbon block 1 and the cathode carbon block 2 3 in the vertical direction. This structure makes the path of the current entering the steel rod from the cathode carbon block near the side longer, and the resistance increases, prompting ...

Embodiment 2

[0023] Such as Figure 5 Be divided into two cathode carbon blocks up and down in the present invention, only adopt the cross-sectional schematic diagram of insulation and conduction paste connection in the horizontal direction, by cathode carbon block one 1, insulation paste 2, cathode carbon block two 3, conduction paste Paste 1 4, conductive paste 2 5 and cathode steel rod 6 are composed. In this embodiment, the cathode carbon block one 1 and the cathode carbon block two 3 are connected by insulating paste 2 and conductive paste two 5 . The height of cathode carbon block 1 is 400-650 mm, the height of cathode carbon block 2 3 is 200-500 mm, the height of cathode steel rod 6 is 65-200 mm, the thickness of insulating paste 2 is 5-20 mm, and the length is 50-50 mm. 500mm. The conductive paste 2 has a thickness of 5-20mm and a length of 500-2000mm. This structure makes the path of the current entering the steel rod from the cathode carbon block near the side longer, and the ...

Embodiment 3

[0025] Such as Figure 6 In the present invention shown, it is divided into three cathode carbon blocks, which are connected by insulating paste in the horizontal direction and connected by insulating paste in the vertical direction. The cathode carbon block-1, the insulating paste 2, and the cathode carbon Block two 3, conductive paste one 4, conduction paste two 5, cathode steel rod 6 and cathode carbon block three 7 form. In this embodiment, the height of cathode carbon block 3 7 is 400-650 mm, the height of cathode carbon block 1 is 100-500 mm, the height of cathode carbon block 2 3 is 200-500 mm, and the height of cathode steel rod 6 is 65-500 mm. 200mm, the thickness of the insulating paste 2 is 5-20mm, and the length is 50-500mm, the thickness of the conductive paste 2 5 is 5-20mm, and the length is 420-650mm. This structure makes the path of the current entering the steel rod from the cathode carbon block near the side longer, and the resistance increases, prompting m...

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Abstract

The invention discloses an aluminum reduction cell cathode structure capable of lowering the horizontal current of molten aluminum and the maximum surface current of a cathode carbon block simultaneously. By the adoption of the cathode structure, the single cathode carbon block is divided into a plurality of small cathode carbon block bodies which are connected through conductive binding tapes and insulated binding tapes. The aluminum reduction cell cathode structure has the advantages that the horizontal current of the molten aluminum and the maximum surface current of the cathode carbon block can be lowered obviously, and therefore fluctuation of the molten aluminum and the corrosion rate of the cathode carbon block can be reduced, and the purposes of lowering energy consumption of an aluminum reduction cell and prolonging the service life of the reduction cell are achieved; and moreover, the method is simple and easy to implement, an existing reduction cell structure does not need to be greatly changed and alteration investment is small.

Description

technical field [0001] The invention relates to a cathode structure of an aluminum electrolytic cell that simultaneously reduces the horizontal current of aluminum liquid and the maximum current on the surface of a cathode carbon block, and relates to the technical field of an aluminum electrolytic cell. Background technique [0002] At present, the traditional Hall-Elu aluminum electrolysis process is still used in industrial aluminum smelting. The production of electrolytic aluminum is a large prebaked aluminum electrolytic cell. In the aluminum electrolytic cell, a strong direct current enters the anode guide rod from the anode busbar, and the current flows vertically downward from the anode guide rod, so as to pass through the anode carbon block, electrolyte, and aluminum liquid. And the cathode carbon block, and finally the cathode steel rods placed horizontally are collected and introduced into the cathode busbar. Due to the horizontal placement of the cathode steel r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/08
CPCC25C3/08
Inventor 陶文举王兆文高炳亮石忠宁胡宪伟刘风国杨酉坚
Owner NORTHEASTERN UNIV