Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Utilizing fused bath
Patent
1995-12-26
1997-09-09
Valentine, Donald R.
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Utilizing fused bath
205372, 205404, 205407, 205411, 423497, 4234993, 423DIG12, C25C 306, C25C 300
Patent
active
056652208
ABSTRACT:
In the electrolytic production of magnesium from an electrolyte comprising magnesium chloride and impurity quantities of magnesium oxide which adversely affects the efficiency of cell operation, the magnesium oxide is chemically and electrolytically removed from the electrolyte by sparging the electrolyte with hydrogen and/or hydrocarbon gas adjacent the anode such that MgO reacts with H.sub.2 or, e.g., CH.sub.4 and Cl.sub.2 (generated at the anode) under the electrical potential of the cell to form magnesium chloride. Similarly, magnesium oxide may be mixed and stirred in molten magnesium chloride and reacted with Cl.sub.2 and H.sub.2 (and/or hydrocarbon) to form anhydrous MgCl.sub.2 for use in magnesium production.
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Kirk-Othmer, "Encyclopedia of Chemical Technology," 3rd Edition, vol. 2, pp. 144-154.
Kirk-Othmer, "Encyclopedia of Chemical Technology," 3rd Edition, vol. 14, pp. 576-583.
General Motors Corporation
Grove George A.
Valentine Donald R.
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