Patents by Inventor Lasse J. Valli

Lasse J. Valli 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).

  • Method for oxidizing pulverous fuel with two gases having different oxygen contents
    Patent number: 5443620
    Abstract: A method for oxidizing the pulverous fuel of a furnace, advantageously a flash smelting furnace, by means of a burner, so that the oxidation takes place mainly owing to an effective mixing of two different combustion gases, pulverous fuel and possibly an extra fuel, in the furnace space. The combustion gases are conducted into the furnace space in separate jet flows, so that oxygen is fed in through the center in an at least partly turbulent flow, and the air is fed around it in several separate flows. A burner for mixing pulverous fuel and combustion gas and for burning them in the furnace space is described.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: August 22, 1995
    Assignee: Outokumpu Engineering Contractors Oy
    Inventors: Pentti J. Kaasinen, Launo L. Lilja, Valto J. Makitalo, Lasse J. Valli
  • Apparatus for oxidizing pulverous fuel with two gases having different oxygen contents
    Patent number: 5358222
    Abstract: The invention relates to a method for oxidizing the pulverous fuel of a furnace, advantageously a flash smelting furnace, by means of a burner, so that the oxidation takes place mainly owing to an effective mixing of two different combustion gases, pulverous fuel and possibly an extra fuel in the furnace space. The combustion gases are conducted into the furnace space in separate flows, so that oxygen is fed in through the center in an at least partly turbulent flow, and the air is fed around it in several separate flows. The invention also relates to a burner for mixing pulverous fuel and combustion gas and for burning them in the said furnace space.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: October 25, 1994
    Assignee: Outokumpu Engineering Contractors Oy
    Inventors: Pentti J. Kaasinen, Launo L. Lilja, Valto J. Makitalo, Lasse J. Valli