Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1991-09-18
1993-05-18
Langel, Wayne
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423111, 423208, 23302R, 23302T, 23304, C22B 2100, C22B 2600, C01F 700, C01D 300
Patent
active
052119220
ABSTRACT:
A process for recovery of metallic aluminum, sodium and potassium chloride and an aluminum oxide-metallic aluminum product from secondary aluminum dross. A secondary aluminum dross feed is separated by particle size into a first dross portion which is water leached, filtered, evaporated in an evaporator to produce crystallized sodium and potassium chloride salts, magnesium chloride remaining in solution. A purge stream is removed from the evaporator wherein the crystallized salts are separated therefrom. The purge stream is then discharged onto the crystallized salts.
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Bennett Richard C.
Yerushalmi Dan
Aluminum Company of America
Bos Steven
Brownlee David W.
Langel Wayne
Radack David V.
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