Region electrolysis prebaking aluminum cell

An aluminum electrolytic cell and electrolytic cell technology, applied in the field of aluminum electrolytic cells, can solve the problems of complex processing of special-shaped cathodes, difficulty in replacement and repair, and large impact on electrolytic cells, and achieve low replacement and maintenance, simple processing, and reduced energy consumption. Effect

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

Although some follow-up studies have slowed down wear by changing the material of the cathode protrusion structure, changing the material also changes the conductivity of the cathode, which has a greater impact on the electrolytic cell, and also cannot avoid defects that are difficult to replace
In addition, there are similar patents such as high and low cathode blocks (200910010078.0) and special-shaped cathodes (201010506682), whose principles are basically the same as those of the above-mentioned patents, but the disadvantages are that it is difficult to completely overcome the above-mentioned defects
Therefore, from the perspective of changing the surface shape of the cathode to reduce the fluctuation of the aluminum liquid, although the cell voltage can be reduced to a certain extent, its characteristics that are difficult to replace and repair and the resulting shortened cell life or early damage to the electrolytic cell are its biggest defects.
In addition, the processing of special-shaped cathodes is complicated, the yield rate is reduced, and the unit price is high, which is another major defect.

Method used

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  • Region electrolysis prebaking aluminum cell
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  • Region electrolysis prebaking aluminum cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 , figure 2 , image 3 with Figure 4 As shown, the electrolytic cell of the present invention having a partition plate in an area not in contact with the cathode is composed of a bottom refractory insulation material 1, a side insulation material 2, a cathode steel rod 3, a cathode 4, a side carbon block 5, a tank shell 6, and an anode 7. Composed of the area dividing plate 8 and the fixing device 12 for the dividing plate. Among them, the area dividing plate 8 is installed in the direction perpendicular to the length of the tank, and each electrolytic cell has at least 3 to 10 dividing plates (such as Figure 4 As shown), the area dividing plate 8 divides the entire electrolytic cell melt working area into several small areas, and the electrolytic cell is equipped with at least one feeder in each partition. The thickness of the area dividing plate 8 is 10cm~40cm, the height is the depth of the groove or slightly smaller, and the length is slightly...

Embodiment 2

[0038] Such as Figure 5 with Image 6 As shown, the electrolytic cell of the present invention having a region dividing plate with a small-sized aluminum communication hole in contact with the cathode is composed of a bottom refractory insulation material 1, a side insulation material 2, a cathode steel rod 3, a cathode 4, and a side carbon block 5. The tank shell 6, the anode 7, the area dividing plate 8, the small-sized aluminum communication hole 9 on the dividing plate and the dividing plate fixing device 12 are composed. Among them, the area dividing plate 8 is installed in the direction perpendicular to the length of the tank, and each electrolytic cell has at least 3 to 10 dividing plates (such as Figure 5shown); the area dividing plate 8 divides the entire electrolytic cell melt working area into several small areas, and the electrolytic cell is equipped with at least one feeder in each partition. The area dividing plate 8 has a thickness of 10cm to 40cm, a height ...

Embodiment 3

[0040] Such as Figure 7 with Figure 8 As shown, the electrolytic cell of the present invention having a region dividing plate with a large-sized aluminum communication hole in contact with the cathode is composed of a bottom refractory insulation material 1, a side insulation material 2, a cathode steel rod 3, a cathode 4, and a side carbon block 5. The tank shell 6, the anode 7, the area dividing plate 8, the large-size aluminum communication hole 10 on the dividing plate and the dividing plate fixing device 12 are composed. This electrolyzer is different from Embodiment 2 except that the size, quantity and distribution of the aluminum communication holes are different, and the others remain the same. In this embodiment, a row of 2 to 8 large-sized aluminum communication holes 10 on the partition plate with a larger size of circular, regular triangle or regular polygon is opened at the bottom of the partition plate 8, and the partition plate The diameter of the circumscri...

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Abstract

The invention discloses a region electrolysis prebaking aluminum cell which comprises a cathode (4), a side carbon block (5), a cell housing (6) and an anode (7), wherein at least one region segmenting plate (8) is arranged in the longitudinal direction of the cell, is used for segmenting the whole cell melt working region into a plurality of small regions, and is embedded and fixed in the side carbon block (5), an aluminum guide channel is arranged between a body of the region segmenting plate (8) or the region segmenting plate (8) and the cell, and an integral molten aluminum communicating channel is formed through the aluminum guide channel. The region electrolysis prebaking aluminum cell has the advantages of being capable of greatly reducing fluctuation of molten aluminum, being easy to install, replace and maintain, and being low in cost.

Description

technical field [0001] The invention relates to an aluminum electrolytic cell, in particular to a partitioned electrolytic prebaked aluminum electrolytic cell. Background technique [0002] The traditional Hall-Héroult aluminum electrolysis process has always been the only method for industrial aluminum smelting. However, its high energy consumption is one of the main disadvantages of the Hall-Héroult process. The main reasons for high energy consumption are as follows: First, the absolute value of the vertical magnetic field of the aluminum liquid layer is too large and the horizontal gradient distribution is uneven, and the aluminum liquid and electrolyte have horizontal and vertical fluctuations in the electrolytic cell, resulting in poor stability of the electrolytic cell , the electrolytic cell is forced to operate at a high pole distance, so a large part of energy consumption is wasted on it; second, the current electrolytic system needs to maintain a high temperature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/08
Inventor 张红亮李劼俆宇杰田忠良吕晓军赖延清
Owner CENT SOUTH UNIV
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