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Aluminum cell side conductive cathode structure for reducing horizontal current of molten aluminum

A horizontal current, aluminum electrolytic cell technology, applied in the field of aluminum electrolytic cells, can solve problems such as unsatisfactory effect, changes in stress and conductivity, safety of cell life and hidden dangers of cell life, etc., to achieve easy low pole distance production, electric field optimization, Effect of cell voltage reduction

Inactive Publication Date: 2013-08-14
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the structure for reducing the horizontal current of molten aluminum is basically the improvement of the structure of the cathode steel rod itself or the tamping paste. For example, Chinese patent 200710158715. The design and construction of the lining structure of the tank put forward higher requirements, and the current industrial experiment results are not ideal; Chinese patent 200610200265.1 and Chinese patent 201110089796.9 both proposed to reduce the horizontal current by changing the structure of the cathode steel rod, but the change of the steel rod structure will It leads to changes in the stress and electrical conductivity between the steel rod and the carbon block, which brings certain safety and hidden dangers to the life of the tank

Method used

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  • Aluminum cell side conductive cathode structure for reducing horizontal current of molten aluminum
  • Aluminum cell side conductive cathode structure for reducing horizontal current of molten aluminum
  • Aluminum cell side conductive cathode structure for reducing horizontal current of molten aluminum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 2 , image 3 with Figure 4 Shown is a schematic diagram of the half-cathode structure of the aluminum electrolysis cell using the full-length and horizontally arranged side cathode steel rods of the present invention. It consists of a cathode carbon block 1, a bottom cathode steel rod 2, a side cathode steel rod 3 and a steel rod carbon. Paste 4 composition. In this embodiment, the cathode carbon block 1 has a total length of 3000-4000mm, a width of 400-800mm, and a height of 400-700mm; the bottom of the cathode carbon block 1 has two parallel dovetail grooves of equal cross section, corresponding to each dovetail groove embedded in one A full-length or non-full-length bottom cathode steel rod 2 of equal cross-section. The bottom cathode steel rod 2 has a width of 50mm~90mm and a height of 50mm~200mm. The material, processing and installation methods are the same as the traditional cathode steel rod; cathode carbon block 1 There is a uniform cross-sectio...

Embodiment 2

[0040] Such as Figure 5 , Image 6 with Figure 7 Shown is a cross-sectional view of the half-cathode structure of the aluminum electrolysis cell using the full-length and inclined side cathode steel rods of the present invention. It consists of a cathode carbon block 1, a bottom cathode steel rod 2, a side cathode steel rod 3 and a steel rod carbon. Paste 4 composition. In this embodiment, the cathode carbon block 1 has a total length of 3000 mm to 4000 mm, a width of 400 mm to 800 mm, and a height of 400 mm to 700 mm; there are two dovetail grooves of equal cross section at the bottom of the cathode, corresponding to each dovetail groove embedded with a dovetail groove of equal cross section. The long or non-long bottom cathode steel rod 2, the bottom cathode steel rod 2 has a width of 50mm~90mm and a height of 50mm~200mm. The material, processing and installation methods are the same as the traditional cathode steel rod; the two sides of the cathode carbon block 1. There is...

Embodiment 3

[0042] Such as Figure 8 , Picture 9 with Picture 10 Shown is a three-dimensional schematic diagram and a cross-sectional view of the half-cathode structure of an aluminum electrolytic cell with a single steel bar at the bottom, full-length side sections and horizontally arranged side cathode steel bars of the present invention, consisting of a cathode carbon block 1, a bottom cathode steel bar 2, The side cathode steel rod 3 and the steel rod carbon paste 4 are composed. In this embodiment, the cathode carbon block 1 has a total length of 3000 mm to 4000 mm, a width of 400 mm to 800 mm, and a height of 400 mm to 700 mm; the bottom of the cathode carbon block 1 has a dovetail groove of equal cross-section, and a dovetail groove of equal cross section is embedded in the dovetail groove. The long or non-long bottom cathode steel rod 2, the bottom cathode steel rod 2 has a width of 50mm~90mm and a height of 50mm~200mm. The material, processing and installation methods are the sam...

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Abstract

The invention discloses an aluminum cell side conductive cathode structure for reducing a horizontal current of molten aluminum. The horizontal current in the molten aluminum can be greatly reduced through installing and using a horizontal or inclined conductive side cathode steel rod. A structure parameter of a cathode is determined according to an actual cell type design, the horizontal current in the molten aluminum can be remarkably reduced when the cathode is applied to the aluminum cell, the distribution of the horizontal current in the molten aluminum is optimized and the cathode voltage drop is reduced, thus the functions of weakening the vertical fluctuation of the molten aluminum and stabilizing the horizontal movement of the molten aluminum are achieved so that an electrolysis can be stably carried out at a low voltage, and the energy consumption is greatly reduced. The aluminum cell side conductive cathode structure is convenient and simple to process, easy to realize, low in cost and little in influence on service life of an inner linear of the cell.

Description

Technical field [0001] The invention relates to an aluminum electrolytic cell, in particular to a conductive cathode structure on the side of the aluminum electrolytic cell for reducing the level current of the aluminum liquid. Background technique [0002] The Hall-Héroult aluminum electrolysis process has been the only economically feasible method for industrial aluminum smelting since its inception for more than 100 years. In this process, the current flows through the aluminum guide rod, the anode steel claw, the anode, the electrolyte, the aluminum liquid, the cathode carbon block, the steel rod, and the bus bar system in sequence. On the whole, the current flows through the aluminum liquid, the cathode carbon A 90-degree turn occurred in the block and the cathode steel rod, and because the resistance of the aluminum liquid is much smaller than that of the cathode carbon block, a large part of the current deflection occurs in the aluminum liquid layer, which results in the h...

Claims

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Application Information

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IPC IPC(8): C25C3/08
Inventor 张红亮李劼俆宇杰杨帅吕晓军田忠良
Owner CENT SOUTH UNIV
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