Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1981-10-29
1983-05-31
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 10R, 266215, 266229, 373121, C22B 2622
Patent
active
043859313
ABSTRACT:
Raw magnesium is charged into a precipitation chamber in a refining furnace beneath the metal surface as a stream directed toward a salt layer beneath the metal. The resultant precipitated sludge is directed along a sloped bottom in the chamber to an adjacent accumulating chamber. Magnesium rises in the precipitation chamber and passes through openings in partition walls between adjacent precipitation chambers. The purest magnesium from an upper metal layer in one chamber is expelled to a lower level in next chamber in the process direction. The refining furnace comprises an accumulating chamber for sludge and plurality of successively arranged precipitation chambers divided from each other by vertical walls. The openings in the partition walls between adjacent precipitation chambers are designed as skewed channels with an inlet at a higher level than an outlet in the following chamber.
REFERENCES:
patent: 2150437 (1939-03-01), Gilbert
patent: 2787592 (1957-04-01), Burkhardt
patent: 3882261 (1975-05-01), Kosarev et al.
Ronhaug Jan B.
Wallevik Oddmund
Andrews M. J.
Norsk Hydro a.s.
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