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. 16, 1979
Filed:
Dec. 05, 1977
Applicant:
Inventors:
Larry K King, Maryville, TN (US);
Roy E Hardwick, Maryville, TN (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01F / ;
U.S. Cl.
CPC ...
423496 ; 13 25 ; 219390 ; 219523 ; 219553 ; 422146 ; 422199 ;
Abstract
An electrical resistance heater for high temperature chlorination of alumina bearing material by gaseous chlorine within a reaction chamber. The heater comprises two, closely spaced, side-by-side, elongated posts made of a carbonaceous material electrically connected together adjacent one of their ends. Two metal bars extend respectively into the other ends of the posts for directing electrical current through the posts. Means are provided for directing an inert gas along the external surfaces of the posts that tend to be cooler than the portions of the posts located to provide the high temperature.