Chemistry: electrical and wave energy – Processes and products
Patent
1994-09-16
1995-12-05
Valentine, Donald R.
Chemistry: electrical and wave energy
Processes and products
204243R, 204245, 204294, C25C 308
Patent
active
054725780
ABSTRACT:
A cell for the production of aluminium by the electrolysis of a molten electrolyte, in particular the electrolysis of alumina dissolved in a molten halide electrolyte such as cryolite, comprises anodes immersed in the molten electrolyte above a cell bottom whereon molten product aluminium is collected in a pool containing bodies of aluminium-resistant material. Under the anodes is at least one grid (10) of side-by-side upright or inclined walls (11,12) of aluminium-resistant material whose bottom ends stand on a ceramic-coated carbon cell bottom covered by the pool of molten aluminium. The bottom ends of the grid walls form a base which is large compared to the height of the walls, each grid (10) standing on the cell bottom and being removable from the cell. These grids reduce movements in the aluminium pool and their top parts may act as a drained cathode.
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Moltech Invent S.A.
Valentine Donald R.
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