Testing of inert anodes in laboratory aluminium cell.

Two types of anodes NiO-Fe2O3-Cu and NiO-Fe2O3-SnO2 were presented as candidates for inert anodes used in aluminium reduction cell. Anodic behaviour of anodes were studied during the electrolysis of alumina in the floride melt. Oxide anodes are subjects of a simple mass transport controlled chemical dissolution into the electrolyte with subsequent transfer to the metal surface where they are being reduced and dissolved into aluminium. Rates of dissolution were lower than 1 [cm/year].