Patents Assigned to International Carbitech Industries, Inc.
  • Pyrometallurgical process for forming tungsten carbide
    Patent number: 5882620
    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.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 16, 1999
    Assignee: International Carbitech Industries, Inc.
    Inventors: Jerome P. Downey, Peter W. Siewert