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. 16, 1999
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Jerome P Downey, Parker, CO (US);
Peter W Siewert, Littleton, CO (US);
Assignee:
International Carbitech Industries, Inc., Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C22B / ;
U.S. Cl.
CPC ...
423440 ; 423439 ; 423 53 ; 423 61 ;
Abstract
A process for forming a salt, such as sodium tungstate, using a pyrometallurgical operation is provided. A slagging operation is performed in which a metal-containing material is melted in the presence of slag formers such as sodium metasilicate and silica. The metal predominantly reports to a denser metal-containing phase. The denser metal-containing phase may then be subjected to gas sparging with a carbon-containing gas in order to form metal carbide, preferably tungsten carbide.