Cell for the refining of aluminum

Details Cell for the refining of aluminum Cell for the refining of aluminum

C - Chemistry, Metallurgy

25

C

204/143

C25C 3/08 (2006.01) C25C 3/24 (2006.01) C25C 7/00 (2006.01)

Patent

CA 1224746

ABSTRACT An exchangeable separator is horizontally located within or outside the electrolyte layer of a three-layer refining cell for the electrolytic purification of aluminium, this separator is freely movable in the vertical direction within a movement space (h) defined by a refractory frame; the porosity of the separator is at least 30%, preferably at least 50%, so that the electrolyte and metal can pass through without any significant additional loss of potential; in industrial refining cells, the separator appropriately has a thickness of 0.5 to 2cm and a disc-shaped design, the vertical movement space (h) being 0.5 to 1 cm, the level changes produced during the operation of the cell can be compensated for in this free movement space; the separator is housed in a tank, suitably of steel, having a refractory lining supporting a carbon base in which are embedded iron- bars.

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