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:
Aug. 15, 1978
Filed:
Aug. 11, 1977
Applicant:
Inventors:
Lothar Reh, Bergen-Enkheim, DE;
Ludolf Plass, Kronberg, DE;
Philippe Marchessaux, Chemin des Trois Moulins, FR;
Assignee:
Aluminum Pechiney, Lyon, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01F / ;
U.S. Cl.
CPC ...
423625 ; 23262 ; 2327 / ; 23284 ; 34 10 ; 34 11 ; 423D / ; 423481 ; 432 15 ;
Abstract
The thermal decomposition of aluminum chloride hydrate in which the preponderant portion of the hydrate is thermally decomposed in an indirectly heated reaction chamber while in a fluidized state with any remainder thermally decomposed in a directly heated rotary furnace and passing the formed aluminum oxide in heat exchange with combustion gases to cool the aluminum oxide and to preheat the combustion gases.