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:
Oct. 31, 1989
Filed:
Dec. 08, 1988
Applicant:
Inventor:
Richard D Lindsay, Raleigh, NC (US);
Assignee:
Plasma Energy Corporation, Raleigh, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; C22B / ;
U.S. Cl.
CPC ...
75 1021 ; 75 24 ; 75 6 / ;
Abstract
A process for recovering free aluminum and aluminum compounds such as aluminum oxide from aluminum dross and aluminum scrap in a furnace heated with a plasma arc torch wherein air is utilized as the arc gas is described. The use of air as the arc gas provides greater heat output per kilowatt hour of electricity and provides for greater dross throughput. Moreover, the process is ecologically safe.