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:
Nov. 05, 1991
Filed:
Feb. 08, 1991
Hani A Abodishish, Ogden, UT (US);
R James Adams, West Point, UT (US);
Joseph B White, Ogden, UT (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A sponge refractory metal product, especially a zirconium metal sponge, that retains a residual quantity of magnesium chloride following subjection to an initial, conventional, distillation cycle is reprocessed by the addition of virgin magnesium in amount normally within the range of about 20% to about 60% of the weight of such sponge metal product and by passing it through re-distillation, including the steps of melting the added virgin magnesium and the sponge metal to open the otherwise closed pores thereof, lowering furnace temperature to solidify the molten magnesium, raising the temperature to vaporize and remove from the furnace the magnesium metal, and again raising the temperature to vaporize and remove from the furnace the initially entrapped magnesium chloride. Thereafter, it is preferable that the temperature be again raised to sinter together any loose particles of the sponge metal. It is believed that a eutectic of the sponge metal is formed during the process.