Chemistry: electrical and wave energy – Processes and products
Patent
1986-02-13
1987-07-14
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204243R, 204290R, C25C 312, C25C 702
Patent
active
046800948
ABSTRACT:
A method of producing aluminum by electrolysis of alumina which is dissolved in a molten cryolite bath is described which uses a dimensionally stable anode comprising a substrate composed of a conductive ceramic, a cermet, a metal, an alloy, an intermetallic compound and/or carbon and a coating thereon comprising a rare earth metal oxide or a rare earth metal oxyfluoride which is preserved by maintaining a concentration of the rare earth metal in the electrolyte. By adding to the bath a contamination inhibiting agent the contamination of the aluminum by substrate components due to corrosion of the substrate by the electrolyte contacting the substrate at imperfections of the coating may be inhibited. The contamination inhibiting agent may be a compound of an alkali or an alkaline earth metal, such as a fluoride, in particular LiF or MgF.sub.2.
REFERENCES:
patent: 3960678 (1976-06-01), Alder
patent: 3974046 (1976-10-01), Alder
patent: 4187155 (1980-02-01), de Nora et al.
patent: 4192724 (1980-03-01), Minami et al.
patent: 4379033 (1983-04-01), Clark et al.
patent: 4399008 (1983-08-01), Ray
patent: 4504369 (1985-03-01), Keller
EP 85 810064, European Standard Search Report, dated 28 Oct. 1985.
Eltech Systems Corporation
Freer John J.
Niebling John F.
LandOfFree
Method for producing aluminum, aluminum production cell and anod does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for producing aluminum, aluminum production cell and anod, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing aluminum, aluminum production cell and anod will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1426550