Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1975-07-09
1976-11-30
Ozaki, G.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 10R, 75 10P, 75 10A, C22B 4500
Patent
active
039947173
ABSTRACT:
The metallothermic reduction of magnesium oxide to magnesium by means of a metallic reducing agent in a reaction zone at elevated temperature in the presence of a molten oxidic slag, wherein the product magnesium is vaporized and evolved from the slag into a substantially static atmosphere of inert gas and passes predominately by diffusion through the inert gas from the reaction zone to a condensation zone and is collected. As a result, not only is it possible to operate the process at a higher absolute pressure than heretofore, but also, unexpectedly, the magnesium product obtained is relatively pure as compared with commercial magnesium, and contains impurities, notably silicon, in low concentration.
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Ozaki G.
Whitney Douglas E.
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