Patent ID: 6258247
Filing Date: 2001-07-10
Classification: C25C

Abstract:
A electrolyle bath for use in the electrolytic reduction of alumina to aluminum employing an anode and a cathode, said bath consisting essentially of:a molten electrolyte for improved wettability of said cathode with molten aluminum comprising the following ingredients (a) and (b):(a) AIF.sub.3 and at least one salt selected from the group consisting of NaF, KF, and LiF; and(b) at least one component selected from the group consisting of (i) about 0.004 wt. % to about 0.2 wt. %, based on total weight of the molten electrolyte, of at least one transition metal or at least one compound of said metal or both, and (ii) metallic aluminum;said molten electrolyte having a density less than the density of molten aluminum and less than the density of alumina.