Patents by Inventor Gary Kaiura

Gary Kaiura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Treatment of metal sulphide concentrates by roasting and electrically stabilized open-arc furnace smelt reduction
    Patent number: 6699302
    Abstract: A process for treating a metal sulphide concentrate which includes the steps of: a) roasting the concentrate to reduce the sulphide content of the concentrate, to a negligible value and b) melting the concentrate, under reducing conditions, in an electrically stabilized open-arc furnace, in particular a DC arc furnace.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: March 2, 2004
    Assignee: Mintek
    Inventors: Rodney T Jones, Nicholas A. Barcza, Gary Kaiura, Gary O'Connell, Anthony Hannaford
  • Fluidized bed reduction of laterite fines with reducing gases generated in situ
    Patent number: 6379426
    Abstract: The present invention is concerned with a method for the pre-reduction of laterite fines in a reactor, preferably a fluidized bed, with reducing gases generated in situ by adding a reducing agent such as a carbonaceous material in the fluidized bed chamber, fluidizing the bed with an oxidizing gas and maintaining the reactor at a temperature sufficiently high to partially combust the coal and generate a reducing atmosphere. The reactor bed discharge calcine product has a carbon content of about 0.1%, and the composite reactor product has a carbon content lower than 2.0%.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: April 30, 2002
    Assignee: Falconbridge Limited
    Inventors: Ron Shonewille, Gary Kaiura, Terrence Koehler