Novel composite graphitized deformed cathode for aluminium electrolysis

A technology of graphitization and aluminum electrolysis, which is applied in the field of aluminum electrolysis, can solve the problems of low production cost and leaky grooves, and achieve the effects of prolonging life, simple groove building, and strong operability

Active Publication Date: 2011-01-19
GUANGXI QIANGQIANG CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to address the above existing problems, to provide a kind of existing equipment that can be used for production, low production cost, long life of the choke block (same life as the electrolytic cell), and simultaneously realize the weak joint of the two cathode main blocks Combined special-shaped cathode for aluminum electrolysis to solve the technical problem that the aluminum electrolyte is easy to leak from the junction of the two cathode main blocks

Method used

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  • Novel composite graphitized deformed cathode for aluminium electrolysis
  • Novel composite graphitized deformed cathode for aluminium electrolysis
  • Novel composite graphitized deformed cathode for aluminium electrolysis

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Embodiment 1

[0029] Such as figure 1As shown, the novel combined graphitized special-shaped cathode for aluminum electrolysis of the present invention, the external dimensions of the main body block and the length of the choke block are determined according to the size of the electrolytic cell and the installed capacity of the transformer; two sets of depths are arranged symmetrically on the longitudinal edge of the main body block (1). A groove (4) with a width of 100mm and a width of 80mm, the distance between the groove (4) and the laterally outer edge of the main body block is 300mm, and the distance between two grooves (4) on the same side is 300mm; it will be different from The graphitized cathode block (3) made of the material of the main body block, rectangular in cross section, 120 mm in height and 150 mm in width, spans the joint (2) of the two main body blocks (1), and is embedded in two grooves ( 4) Inside the combined groove; finally use the paste to tamp the joints (2) betwee...

Embodiment 2

[0031] Such as figure 1 As shown, one of the novel combined graphitized special-shaped cathodes for aluminum electrolysis of the present invention, the external dimensions of the main block and the length of the choke block are determined according to the size of the electrolytic cell and the installed capacity of the transformer; the longitudinal edges of the main block (1) are symmetrically opened There are two sets of grooves (4) with a depth of 125mm and a width of 90mm, the distance between the grooves (4) and the laterally outer edge of the main body block is 340mm, and the distance between two grooves (4) on the same side is 325mm ; Different from the material of the main body block, the cross-section is rectangular, the height is 190mm, and the graphitized cathode block (3) with a width of 175mm spans the connection seam (2) of the two main body blocks (1), and is embedded in the two In the groove formed by a combination of two grooves (4); finally use paste to tamp th...

Embodiment 3

[0033] Such as figure 1 As shown, one of the novel combined graphitized special-shaped cathodes for aluminum electrolysis of the present invention, the external dimensions of the main block and the length of the choke block are determined according to the size of the electrolytic cell and the installed capacity of the transformer; the longitudinal edges of the main block (1) are symmetrically opened There are two sets of grooves (4) with a depth of 150mm and a width of 100mm, the distance between the grooves (4) and the laterally outer edge of the main body block is 380mm, and the distance between two grooves (4) on the same side is 350mm ; Different from the material of the main block, the cross section is convex, the overall height is 260mm, the overall width is 200mm, the angle of the top chamfer (5) is 135°, and the chamfer height is 30mm. (3) Across the connection seam (2) of the two main body blocks (1), inlaid in the groove formed by the two grooves (4); finally, paste ...

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Abstract

A novel composite graphitized deformed cathode for aluminium electrolysis contains main body blocks and a graphitized cathode flow-resisting block, wherein grooves are symmetrically arranged on the longitudinal edges of the main body blocks, and the graphitized cathode flow-resisting block with the different material of the main body blocks is embedded in the two grooves over the two main body blocks. The invention adopts the mode that the flow-resisting block is embedded in the joint split of the two cathode main body blocks over the electrode, thus the electrode distance of the aluminium electrolysis device is reduced, the bath voltage is decreased by about 0.35V-5V, the ton aluminum electricity consumption can be reduced by no less than 1000KWh, and the energy-saving and consumption-reducing effect is obivous. The deformed cathode of the invention can be used to avoid slotting in the middle of each main body block, wherein slotting in the middle of each main body block can reduce the effective thickness of the main body block so as to influence the service life; and by using the deformed cathode, the aim of performing local reinforcement to the joint split of the main body blocks thus prolonging the service life of the electrolytic bath.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolysis, in particular to an aluminum electrolysis special-shaped cathode for producing metal aluminum by a molten salt electrolysis method. Background technique [0002] Aluminum is produced by alumina molten salt electrolysis, the basic principle: molten Al 2 o 3 Under the action of direct current between anode / cathode, an electrochemical reaction occurs to separate Al / O, and Al 3+ Continuously gain electrons at the cathode to form Al droplets and accumulate into a large amount of aluminum liquid, while O 2- Continuously loses electrons at the anode and reacts with C to generate a large amount of CO 2 , and its chemical reaction equation is 2Al 2 o 3 +3C=4Al+3CO 2 , the reaction process needs to consume a lot of electric energy. The DC power consumption of aluminum electrolysis follows the following formula: DC power consumption = 2980×V / μ (V represents the cell voltage, which chang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/08
Inventor 赵唯皓罗高强彭革华
Owner GUANGXI QIANGQIANG CARBON
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