Patents by Inventor Ilkka Kojo

Ilkka Kojo 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).

  • Equipment for the even feed of pulverous material to a concentrate burner of suspension smelting furnace
    Patent number: 6565799
    Abstract: This invention relates to equipment for the feed of pulverous material to a concentrate burner of a suspension-melting furnace, so that the feed of solid finely divided material into the furnace is distributed evenly in the concentrate burner. According to the invention, a vibrating feeder is located between the raw material conveyor and the actual burner, and the concentrate burner feed pipes are equipped with blades for distributing the material.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: May 20, 2003
    Assignee: Outokumpu Oyj
    Inventors: Ilkka Kojo, Markku Lahtinen, Kaarle Peltoniemi
  • Apparatus for suspension smelting
    Patent number: 5772955
    Abstract: The invention relates to an apparatus for the suspension smelting of sulfidic, finely divided raw materials containing metals, such as copper, nickel and lead, by using oxygen enrichment. In this method into the suspension smelting furnace (1) there is fed the raw material (4,5) to be smelted together with flux (6) and oxidizing gas (7) and the walls (18) of the reaction space of the suspension smelting furnace are cooled and at least two molten phases created (16,17). According to the invention the degree of oxygen enrichment of the oxidizing gas is at least 40% in order to raise the temperature of the particles in suspension to at least 200.degree. C.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: June 30, 1998
    Assignee: Outokumpu Engineering Contractors OY
    Inventors: Pekka Hanniala, Risto Saarinen, Erkki Krogerus, Ilkka Kojo