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:
Dec. 07, 1976
Filed:
Aug. 28, 1975
Applicant:
Inventors:
Philip M Rooke, Golden, CO (US);
Harry B Scott, Golden, CO (US);
Peter A Angevine, Ridgefield, CT (US);
Stanley A Bunk, Greenwich, CT (US);
Assignees:
Southwire Company, Carrollton, GA (US);
National Steel Corporation, Pittsburgh, PA (US);
Earth Sciences, Inc., Golden, CO (US);
Primary Examiner:
Int. Cl.
CPC ...
C01F / ;
U.S. Cl.
CPC ...
423120 ; 75 / ; 423127 ; 423625 ; 423629 ; 432 15 ;
Abstract
A method for dehydrating alunite ore prior to further processing to recover metals therefrom, comprising exposing the ore in particulate form to burning coal as the heat supply in a fluidized bed fluidized with an oxygen containing gas. The invention is illustrated by the removal of water from alunite ore prior to further processing the ore to recover aluminum.