Process for the extraction of aluminum from aluminum ores

Details Process for the extraction of aluminum from aluminum ores Process for the extraction of aluminum from aluminum ores

1976-10-08

1978-01-17

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423132, 423343, 423629, C01F 722

Patent

active

040692965

ABSTRACT:
Aluminum may be recovered from various raw materials including kaolinite, alunite, coal ash and slag, and both raw and spent oil shale, by contacting such materials with an aqueous solution of hydrofluoric acid, followed by removal of the insoluble residues remaining suspended in solution and the precipitation of hydrated aluminum hydroxide from the clear solution by basification with an alkaline agent.

REFERENCES:
patent: 508796 (1893-11-01), Ackermann
patent: 725683 (1903-04-01), Doremus
patent: 1036453 (1912-08-01), Childs
patent: 1215351 (1917-02-01), Doremus
patent: 1237488 (1917-08-01), Doremus
patent: 1403183 (1922-01-01), Milligan
patent: 2842426 (1958-07-01), Glocker
patent: 3961030 (1976-06-01), Wiewiorowski et al.

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