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US 4,124,476 AGranted
Electrolytic cell for the production of aluminium
OwnerEgon Rapolthyinventor
Life of this patent
Estimating the term…
Abstract
The amount of bulging and cracking in the carbon floor of an electrolytic reduction cell for the production of aluminium is reduced by the provision of a recess in the steel container which accommodates the carbon floor as it expands. The recess is filled with a first material which is easily compressible and a second material which deforms only at a relatively higher load and transmits the expansion forces to the steel container without producing any permanent deformation thereof.
Claims11
An electrolytic cell for the production of aluminum,
- comprising in combination:
- a walled metal container defining a chamber,
- a carbon lining disposed within the container, and including a floor having an upper surface, and being normally susceptible to bulging and cracking during operation of the cell, said chamber accommodating the horizontal expansion of the floor of said container during operation of the cell, and
- first and second materials in contact with one another and filling said chamber, the first material extending between said carbon lining and at least one wall of said container and being relatively easily compressible, the second material extending between said carbon lining and at least one wall of said container and being compressible by a load which, while not causing any permanent deformation or cracking of the container, gives rise to a reaction force exerted on the floor of said carbon lining to counteract bulging and cracking of the floor of said carbon lining.
1 more element
Dependencies are inferred from the claim text.