Electrodes for aluminum reduction cells

Details Electrodes for aluminum reduction cells Electrodes for aluminum reduction cells

C - Chemistry, Metallurgy

25

C

204/197

C25C 3/06 (2006.01) C25C 3/12 (2006.01) G03B 42/04 (2006.01)

Patent

CA 1037420

ABSTRACT OF THE DISCLOSURE A method for producing aluminum by molten salt elec- trolysis of aluminum oxide which comprises electrolyzing aluminum oxide dissolved in a molten salt containing aluminum sodium fluoride as the main component by passing a direct current through an anode to a cathode disposed in said molten salt, wherein at least a portion of at least one of said anode and said cathode that is brought into contact with said molten salt is made of or covered with a composition containing at least about 50% by weight of electronic conductive oxide ceramics having chemical resistance to the molten salt, said oxide ceramics being selected from spinal structure oxides having the general formula XYY'04 wherein X is a divalent or tetravalent metal, Y and Y' may be either the same or different and are trivalent or divalent metals, O is oxygen atom, provided that when X is a divalent metal, Y and Y' are selected from trivalent metals but the spinel structure oxides are excluded in which both Y and Y' are trivalent iron, Fe (III), and when X is tetravalent metal, Y and Y' are selected from divalent metals, provskite structure oxides having the general formula RMO3 wherein R is a monovalent divalent or trivalent metal, M is a pentavalent, tetravalent or trivalent metal, O is oxygen atom, provided that when R is a monovalent metal, M is selected from pentavalent metals, when R is divalent metal, M is selected from tetravalent metals, and when R is a trivalent metal, M is selected from trivalent metals or a mixture thereof, the remainder of the composition being comprised of an oxide, carbide, nitride, boride or silicide of an element selected from transition metals, platinum group metals and rare earth elements.

210695

Affiliated with

Also associated with

Rating

Electrodes for aluminum reduction cells does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrodes for aluminum reduction cells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrodes for aluminum reduction cells will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-504931