Chemistry: electrical and wave energy – Processes and products
Patent
1992-09-21
1994-01-18
Niebling, John
Chemistry: electrical and wave energy
Processes and products
204 64R, C25C 304
Patent
active
052797163
ABSTRACT:
A method is provided for the electrolytic production of magnesium metal. The method is highly economical in that the method permits the use of magnesium oxide as a feed stock for the electrolytic process. The method uses a rare earth chloride as a constituent of the electrolyte bath. The rare earth chloride spontaneously reacts with the magnesium oxide to form magnesium chloride. The magnesium chloride can then be electrolyzed using standard electrolysis methods. The avoidance of using magnesium chloride as the feed stock to the process eliminates the substantial costs involved with producing and purifying magnesium chloride from natural sources. In addition, the rare earth chloride continuously reacts with any magnesium oxide from any source which may form during the process to prevent a sludge from forming within the electrolyte, such that the process efficiently produces magnesium metal with no losses attributable to sludge formation.
REFERENCES:
patent: 4495037 (1985-01-01), Ishizuka
patent: 5024737 (1991-06-01), Claus et al.
patent: 5089094 (1992-02-01), Ogasawara et al.
patent: 5118396 (1992-06-01), Claus et al.
General Motors Corporation
Grove George A.
Igoe Patrick J.
Niebling John
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