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Cathode assemblies for the production of aluminium

A technology of cathode components and cathode blocks, which is applied in the direction of improving process efficiency and can solve the problems of mechanical robustness and chemical protection.

Active Publication Date: 2022-07-05
TOKAI COBEX GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

WO 2016 / 079605 does not address the issues of mechanical robustness and chemical protection related to transport, handling, installation, firing and start-up of the cell, and cathode fluctuations during the life of the cell (typically 3-6 years)

Method used

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Examples

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Embodiment Construction

[0009] In the context of the present invention, a current collector system should be understood as a system whose geometry and position produce an effective electrical contact surface or series of electrical contact points with at least one cathode block.

[0010] Furthermore, in the context of the present invention, the term "sloping upwards" in tilting upwards when viewed over the length of the cathode block means that the respective parts of the current collector system or the entire current collecting system are independent of each other with respect to the longitudinal horizontal plane of the cathode block The ground has an angle greater than 0°, ie each respective part of the current collector system and / or different current collector systems may have a different angle. The angle can vary from more than 0° to 90°, wherein the choice of the angle, in particular the largest possible angle, depends on the length and height of the cathode block. Preferably, an angle between ...

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PUM

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Abstract

The present invention relates to a novel cathode assembly and its use in the production of aluminum in electrolytic cells.

Description

technical field [0001] The present invention relates to a novel cathode assembly and its use in the production of aluminum in electrolytic cells. Background technique [0002] For example, electrolysis cells are used for the electrolytic production of aluminium, which is usually carried out on an industrial scale according to the Hall-Heroult process. In the Hall-Heroult process, a molten mixture of alumina and cryolite is electrolyzed. Here, cryolite Na 3 [AlF 6 ] is used to lower the melting point of pure alumina from 2045°C to about 950°C of the mixture (which is a mixture containing cryolite, alumina and other substances such as aluminum fluoride and calcium fluoride). [0003] The electrolytic cell used in this process includes a cathode base consisting of a plurality (eg up to 28) of adjacent cathode blocks forming the cathode. Here, the intermediate spaces between the cathode blocks are usually filled with carbon tamping paste in order to seal the cathodes against...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/16C25C3/08
CPCC25C3/08C25C3/16
Inventor 伊莱恩·萨姆马库斯·普费弗弗洛里安·普费弗尔奥斯卡·维拉-加西亚马里乌什·明金娜休厄林·梅尔尼克
Owner TOKAI COBEX GMBH