Cathode for magnesium production

Details Cathode for magnesium production Cathode for magnesium production

1986-11-24

1988-11-15

Andrews, R. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204290R, 204292, 204294, 204268, C25C 300

Patent

active

047847425

ABSTRACT:
Cathode for use in magnesium production by electrolysis of molten salts. The cathode consists of compact molybdenum, tungsten or alloys of these metals or consists of a substrate coated with molybdenum, tungsten or alloys of these metals. The thickness of the coating is at least 10-20 .mu.m. The substrate can be iron or carbon. Carbon coated with molybdenum, tungsten or alloys of these metals can be used as the cathodic face of a bipolar electrode. The wetting of the cathode by magnesium is improved and the amount of contaminants in the produced metal is reduced.

REFERENCES:
patent: 3979267 (1976-09-01), Townsend
patent: 4073704 (1978-02-01), Beale
patent: 4554058 (1985-11-01), Lei et al.
patent: 4571983 (1986-02-01), Sanborn et al.
"Prep. of Thick Coats of W" by McCawley et al, U.S. Bur. Mines, R.I. 6454, 1964.
"Electrovin W...", by Gomes et al, U.S. Bu. Mines R.I. 6742, 1966.
"Effect of - Process Variables on Vapor. Dep. W.", by Hoertel, U.S. Bur. Mines, R.I. 6731, 1966.

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