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:
Apr. 23, 1991
Filed:
Nov. 16, 1989
Ernest D Lee, Ogden, UT (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
Continuous production of zirconium and/or hafnium metal from a fused salt bath in which one of the salts is zirconium and/or hafnium tetrachloride is carried out by feeding additional, make-up zirconium and/or hafnium tetrachloride powder into a zirconium and/or hafnium dissolution area of the bath maintained at a dissolution temperature below which the tetrachloride will vaporize, by circulating portions of the bath into and through a separate but contiguous area maintained at a temperature at which the tetrachloride will vaporize, and by recovering the vaporized tetrachloride. It is preferred that the vaporization area of the bath be wholly surrounded by and insulated from the dissolution area of the bath.