Fractional crystallization process

Details Fractional crystallization process Fractional crystallization process

1978-12-26

1980-09-09

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 63, 75 93R, 75 10R, C22B 2102

Patent

active

042215900

ABSTRACT:
An improved fractional crystallization process for the purification of aluminum is provided which comprises supplying at least a portion of the heat to the fractional crystallization apparatus adjacent the bottom of the apparatus. Impure, molten aluminum is removed from the apparatus by an upper exit port. After initial crystallization of the purified aluminum and removal of at least a portion of the impure molten aluminum, the crystals may be remelted for purposes of recovering purified aluminum.

REFERENCES:
patent: 2471899 (1949-05-01), Regner
patent: 2659761 (1953-11-01), Frevel et al.
patent: 3211443 (1965-10-01), Starner et al.
patent: 3211547 (1965-10-01), Jarrett et al.
patent: 3303019 (1967-02-01), Jacobs
patent: 3671229 (1972-06-01), Ferber et al.
patent: 4043802 (1977-08-01), Esdaile et al.
patent: 4138247 (1979-02-01), Esdaile et al.

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