Ralph Cheek

US Patent:

49274597, May 22, 1990

Filed:

Mar 17, 1989

Appl. No.:

7/324843

Inventors:

Owen M. Gardner - Oakland CA
Ralph L. Cheek - Tulsa OK

Assignee:

Imco Recycling Inc. - Dallas TX

International Classification:

C22B 704

US Classification:

75685

Abstract:

Spent potlinings from aluminum reduction cells are fed to an aluminum reclamation furnace as a partial replacement for or supplement to the molten salt flux used in the reclamation process. This rids the spent potlinings of materials which would leach into soil or groundwater if the potlinings were otherwise disposed of at dumpsites, rendering them suitable for dumping with no hazard to the environment. Benefits to the reclamation process may be had at the same by substituting the less expensive potlinings for the salt flux materials and by using the fuel potential of the potlinings to reduce the external fuel requirement.