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Aluminum electrolysis bath anode arrangement scheme

A technology of aluminum electrolytic cells and configuration schemes, which is applied in the field of aluminum production by molten electrolysis, can solve the problems of increasing workload and loss outweighing the gain, and achieve the effect of reducing the area of ​​the middle seam and achieving considerable economic benefits

Inactive Publication Date: 2008-08-13
NORTHEASTERN UNIV ENG & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, this solution is very difficult to implement in industry, and it may even be worth the harm if it is implemented! Because the anode carbon block has to go through multiple processes from vibration molding, roasting to anode assembly
One more specification requires one more set of molds and several more processes; and when replacing the anode, it will also increase a lot of workload

Method used

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  • Aluminum electrolysis bath anode arrangement scheme
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  • Aluminum electrolysis bath anode arrangement scheme

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1 300KA aluminum electrolytic cell

[0017] For the 300KA aluminum electrolytic cell, as shown in Figure 1 and 2, the length (L) of the molten pool is 13080-14350 mm, and the width (W) is 3550-4200 mm; there are 32-44 anode carbon blocks in total, which are divided into two rows Set in the molten pool, each block has a length (La) of 1500-1700 mm and a width (Wa) of 600-700 mm. The distance (W1) between the outer end of the carbon block and the side of the molten pool of the electrolytic tank is 250-350 mm, and the distance (L1) from the outer side of the carbon block near the aluminum outlet and the end of the flue to the side of the molten pool is 300-500 mm. The gap width (W2) between two rows of carbon blocks is 50-100 mm; and the gap between two adjacent carbon blocks in the same row is provided with 4 feeding points, and the feeding point (L2) is 30-50 mm; The feeding point (L3) is 20-30 mm. An isosceles right-angled triangle with a waist length (H1, H2)...

Embodiment 2

[0018] Example 2 360KA aluminum electrolytic cell

[0019] For the 360KA aluminum electrolytic cell, it is roughly the same as that of Embodiment 1, as shown in Figures 1 and 2. Among them, L is 15400-16800 mm; W is 3650-4300 mm. There are 36-48 anode carbon blocks in the whole electrolytic cell, which are divided into two rows and arranged in the molten pool of the electrolytic cell, where La=1550-1750 mm; Wa=650-750 mm. Set 6 feeding points, other parameters are: W1=250-350 mm; W2=50-100 mm; L1=300-500 mm; L2=30-60 mm; L3=20-50 mm. The lengths of the two waists of the truncated right-angled triangle at the end of the anode are respectively: H1=50 millimeters; H2=100 millimeters.

Embodiment 3

[0020] Example 3 400KA aluminum electrolytic cell

[0021] Same as the above two embodiments, for the 400KA aluminum electrolytic cell, as shown in Figures 1 and 3, L=16100-18150 mm; W=3650-4300 mm. There are 40-52 anode carbon blocks in the whole electrolytic cell, which are divided into two rows and arranged in the molten pool of the electrolytic cell, where La=1550-1750 mm; Wa=650-750 mm. Set 8 feeding points, other parameters are: W1=250-350 mm; W2=50-100 mm; L1=300-500 mm; L2=30-60 mm; L3=20-50 mm. The truncated portion of the anode end is fan-shaped with a radius of 80-150 mm.

[0022] More examples can also be cited. Although their specific parameters are different, they all adopt the method of cutting off two corners at one end of the anode carbon block, which not only reduces the gap between the carbon blocks; Space for feeding points. Experiments have proved that the scheme of the present invention is not only simple and easy to implement, but also has remarkable ...

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Abstract

The invention discloses a new aluminum electobath anode configuration scheme, including an aluminum electrobath, an anode carbon block and feeding points. The invention is characterized in: (1) all the feeding points are arranged on the junction points of four groups of anode carbon blocks; (2) the gaps of anode carbon blocks of the adjacent two groups at the feeding points are widened; while the gaps of anode carbon blocks of the adjacent two groups at the non-feeding points are narrowed; and (3) the four corner of the anode carbon blocks at the feeding points are cut off, so that the feeding points has a large space. The invention also discloses an anode carbon block as an embodiment of the new aluminum electrobath anode configuration scheme, which is characterized in that two corners of one end of the long axis of the carbon block are cut off. The invention is simple, easy to operate, as well as has remarkable effect; since the effective working area of anode is increased, consumption of yield per unit is saved and yield per unit area of the electrobath is increased.

Description

technical field [0001] The invention belongs to the technical field of producing aluminum by molten electrolysis. Specifically, the invention relates to a new configuration scheme of an anode of an aluminum electrolytic cell. Background technique [0002] At present, the prebaked anodes are fed into the aluminum electrolytic cell in the middle, and the anodes are distributed in two rows in the electrolytic cell. For the needs of shelling and cutting in the middle, there is a longitudinal middle seam of about 200mm between the two rows of anodes. In order to replace the anode carbon blocks and exhaust, a horizontal narrow gap of about 40 mm will be left between the same row of anode carbon blocks. [0003] In order to increase the current efficiency, reduce energy consumption, and reduce the unit (ton of aluminum) investment of the aluminum electrolytic cell under the same electrolytic cell size and anode peripheral size, it is necessary to consider increasing the effective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/08C25C3/12
Inventor 戚喜全马绍先吕定雄刘敬雄毛继红董慧王德全毛宇
Owner NORTHEASTERN UNIV ENG & RES INST CO LTD
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