Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Utilizing fused bath
Patent
1995-08-07
1997-04-08
Valentine, Donald R.
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Utilizing fused bath
205389, 205392, 204243R, 204245, 204294, C25C 308, C25C 314
Patent
active
056184034
ABSTRACT:
A cell for the electrowinning of aluminium by the electrolysis of alumina dissolved in a molten fluoride-based electrolyte comprises a cathode composed of a carbon body having an aluminium resistant aluminium-wettable surface layer containing particulate titanium or other refractory hard metal boride and a bonding material providing a porous layer which contains cathodic molten aluminium. Molten cathodic aluminium external to the aluminium-resistant and aluminium-wettable surface contains refractory hard metal and boron in a total concentration sufficient or just below that sufficient to inhibit dissolution into the molten aluminium of the refractory hard metal boride. Alumina is fed to the cell whereby the required amount of titanium in the aluminium results from the alumina feed while, when boron is not present in a sufficient amount, boron is added to bring the total titanium and boron content to or just below the equilibrium solubility product.
REFERENCES:
patent: 2915442 (1955-11-01), Lewis
patent: 3028324 (1962-04-01), Ransley et al.
patent: 3156639 (1964-11-01), Kibby
patent: 3215615 (1965-11-01), Ransley
patent: 3274093 (1966-09-01), McMinn
patent: 3314876 (1967-04-01), Ransley
patent: 3330756 (1967-07-01), Ransley
patent: 3400061 (1968-09-01), Lewis et al.
patent: 4544457 (1985-10-01), Sane et al.
patent: 4560448 (1985-12-01), Sanel et al.
patent: 4681671 (1987-07-01), Duruz
patent: 5004524 (1991-04-01), Duruz
patent: 5227045 (1993-07-01), Townsend
patent: 5486278 (1996-01-01), Manganiello et al.
De Nora Vittorio
Duruz Jean-Jacques
Moltech Invent S.A.
Valentine Donald R.
LandOfFree
Maintaining protective surfaces on carbon cathodes in aluminium does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Maintaining protective surfaces on carbon cathodes in aluminium , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Maintaining protective surfaces on carbon cathodes in aluminium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2395835