Patents by Inventor Esko I. Mattelmaki

Esko I. Mattelmaki 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 and apparatus for heat treatment of lime mud
    Patent number: 5110567
    Abstract: In the heat treatment of lime mud, the lime mud to be introduced to a lime reburning kiln is dried in a pneumatic drier by flue gases from the lime reburning kiln in order to regenerate the lime contained in the mud. Prior to drying, the lime mud is thickened in a drying filter to a dry solids content of over 75%, preferably to approximately 80%. In this way, the lime reburning kiln can be made approximately 30% shorter than conventional kilns, and the apparatus is simpler than the conventional apparatus provided with a pneumatic drier.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: May 5, 1992
    Assignee: A. Ahlstrom Corporation
    Inventor: Esko I. Mattelmaki
  • Apparatus for heat treatment of lime mud
    Patent number: 5110289
    Abstract: In the heat treatment of lime mud, the lime mud to be introduced to a lime reburning kiln is dried in a penumatic drier by flue gases from the lime reburning kiln in order to regenerate the lime contained in the mud. Prior to drying, the lime mud is thickened in a drying filter to a dry solids content of over 75%, preferably to approximately 80%. In this way, the lime reburning kiln can be made approximately 30% shorter than conventional kilns, and the apparatus is simpler than the conventional apparatus provided with a pneumatic drier.
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: May 5, 1992
    Assignee: A. Ahlstrom Corp.
    Inventor: Esko I. Mattelmaki