Device and method for connecting inert anodes for the production of aluminum by fused-salt electrolysis
First Claim
1. Anode assembly for use in a fused bath electrolysis aluminum production cell, comprising:
- an inert anode in the shape of a ladle, with length L, and comprising a cavity, an open end comprising an opening, a wall surrounding the cavity, a closed end and at least one means for mechanically connecting the inert anode to a connection conductor;
a connection conductor comprising a connection end and means for mechanically connecting the connection conductor to the inert anode, and capable of cooperating with the means for mechanically connecting of the inert anode, so as to create a mechanical linkage between the conductor and the inert anode; and
at least one brazed metallic joint or at least one brazing material that can form a brazed metallic joint by brazing wholly or partly during use, the joint or the material being disposed directly between the conductor and the anode, at at least part of at least one anode connection surface at the open end of the inert anode, and at least part of at least one conductor connection surface at the connection end of the conductor.
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Accused Products
Abstract
This invention relates to an anode assembly (1) to be used in a fused bath electrolysis aluminium production cell. This assembly comprises one inert anode (2) in the shape of a ladle, one connection conductor (3, 4, 5), mechanical connection means capable of cooperating so as to set up a mechanical link between the conductor and the anode, one metallic joint (31) that is or could be formed by brazing being located between all or part of at least one surface (20, 20′, 20″) of the open end (22) of the anode (2) and all or part of at least one surface (40, 40′, 40″) of the connection end (42) of the conductor (3, 4, 5). The invention simplifies manufacturing of anode assemblies comprising one inert anode.
8 Citations
37 Claims
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1. Anode assembly for use in a fused bath electrolysis aluminum production cell, comprising:
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an inert anode in the shape of a ladle, with length L, and comprising a cavity, an open end comprising an opening, a wall surrounding the cavity, a closed end and at least one means for mechanically connecting the inert anode to a connection conductor; a connection conductor comprising a connection end and means for mechanically connecting the connection conductor to the inert anode, and capable of cooperating with the means for mechanically connecting of the inert anode, so as to create a mechanical linkage between the conductor and the inert anode; and at least one brazed metallic joint or at least one brazing material that can form a brazed metallic joint by brazing wholly or partly during use, the joint or the material being disposed directly between the conductor and the anode, at at least part of at least one anode connection surface at the open end of the inert anode, and at least part of at least one conductor connection surface at the connection end of the conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. Method for manufacturing an anode assembly, comprising the steps of:
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supplying an inert anode in the form of a ladle, with length L, comprising a cavity, an open end comprising an opening, a wall surrounding the cavity, a closed end and at least one means for mechanically connecting the inert anode to a connection conductor; supplying a connection conductor comprising a connection end, and at least one means for mechanically connecting the connection conductor to the inert anode capable of cooperating with the means for mechanically connecting of the anode, so as to create a mechanical linkage between the conductor and the anode; supplying a brazing material capable of forming a metallic joint; placing the brazing material at a predetermined location adjacent to at least one anode connection surface of the open end of the anode or at least one conductor connection surface of the connection end of the conductor, which connection surfaces will be connected by brazing; assembling the conductor and the anode so as to bring the connection surfaces close to each other; and performing a heat treatment capable of causing formation of a brazed joint directly between the connection surfaces of the conductor and the anode, by means of the brazing material. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification