Purification of aluminum chloride

Details Purification of aluminum chloride Purification of aluminum chloride

1973-12-07

1976-02-17

Hart, Charles N.

Gas separation

Means within gas stream for conducting concentrate to collector

55 72, 55 84, 423210, 423495, B01D 4700, C01F 748

Patent

active

039389693

ABSTRACT:
A process for purifying aluminum chloride gas such as that produced in the chlorination of bauxite, clay and other aluminous ores is disclosed. The method first selectively dissolves or liquefies AlCl.sub.3 from an anhydrous mixture of gaseous metal chlorides which may also include the chlorides of Si, Ti, Fe and other metals. More specifically, the method of the present invention provides for selectively dissolving AlCl.sub.3 vapor at substantially atmospheric pressure without the use of costly or hazardous compressors, or the scraped-wall condensers formerly required for this purpose. In addition, the present method allows for economical recovery of the liquefied AlCl.sub.3.

REFERENCES:
patent: 2533021 (1950-12-01), Krchma
patent: 3294482 (1966-12-01), Lerner
patent: 3436211 (1969-04-01), Dewing
patent: 3786135 (1974-01-01), King et al.

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