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:
Mar. 24, 1992
Filed:
Sep. 21, 1990
Applicant:
Inventors:
Hani A Abodishish, Ogden, UT (US);
R James Adams, West Point, UT (US);
Steven R Kearl, Clearfield, UT (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; C22B / ;
U.S. Cl.
CPC ...
75614 ; 75618 ; 75619 ;
Abstract
Utilization of inherent fractional distillation of magnesium and magnesium chloride in reduction to sponge metal in a vacuum distillation furnace of zirconium and/or hafnium or other refractory metal tetrachloride by the Kroll process, to separate magnesium from magnesium chloride and metal subchlorides so the magnesium can be recycled in the process substantially free of the magnesium chloride and metal subchlorides. The magnesium vapor from the distillation furnace is recovered and condensed separately from the magnesium chloride and refractory metal sub-chloride vapors.