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:
Sep. 02, 1980
Filed:
Aug. 14, 1978
Ronald Wyndham, New Orleans, LA (US);
Gervase M Chaplin, Gretna, LA (US);
Alfred Lippman, Metairie, LA (US);
Toth Aluminum Corporation, New Orleans, LA (US);
Abstract
The invention comprises a process for the manufacture of metal chlorides by the double-decomposition reaction between a metal chlorinating agent and a metal oxide having greater affinity for chlorine than does the oxide of the metal chloride, and in the presence of small amounts of boron chloride or functionally equivalent boron compounds that increase the rate and degree of completion of the reaction. A major application of this invention is for the making by the chlorination of clay of aluminum chloride and alumina intermediates for the manufacture of aluminum metal. SiCl.sub.4 is formed in the carbo-chlorination of clay or other aluminous-siliceous ores. The SiCl.sub.4 by this invention is catalyzed with BCl.sub.3 and reacted with calcined clay to produce AlCl.sub.3 and SiO.sub.2. The practical use of SiCl.sub.4 to make AlCl.sub.3 thus eliminates the previous costly burden of waste SiCl.sub.4 production.