The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 1978
Filed:
Jul. 12, 1976
Applicant:
Inventors:
Kent W Loest, Broomfield, CO (US);
John T Schaefer, Boulder, CO (US);
Assignees:
Southwire Company, Carrollton, GA (US);
National Steel Corporation, Pittsburgh, PA (US);
Earth Sciences, Inc., Golden, CO (US);
Primary Examiner:
Int. Cl.
CPC ...
C01D / ;
U.S. Cl.
CPC ...
204 93 ; 204 98 ; 204104 ; 423127 ;
Abstract
An improvement in the process for the recovery of aluminum from alunite in which potassium hydroxide is recovered from byproduct potassium sulfate by electrodialysis, further improvement being the use of sodium hydroxide from the bleed stream from the Bayer leach for use in the electrodialysis process for recovering potassium hydroxide from potassium sulfate.