Patents by Inventor Markku Lankinen

Markku Lankinen 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 thickening lime mud in a disc filter
    Patent number: 8002994
    Abstract: The present invention relates to a method of treating lime mud slurry being generated in a causticizing process in a pulp mill in a disc filter, in which method the lime mud is fed in the filter, thickened on the filter discs and removed from the filter discs. The lime mud is treated in at least two stages in one and the same disc filter in such a way that the lime mud slurry entering the filter is fed onto only a part of the filter discs, on which lime mud is thickened and removed from the discs, and the removed lime mud is re-slurried in liquid, and the lime mud slurry thus obtained is fed onto a second part of the filter discs, on which lime mud is thickened and removed from the filter and led into a subsequent process stage. The invention also relates to an apparatus.
    Type: Grant
    Filed: November 24, 2005
    Date of Patent: August 23, 2011
    Assignee: Andritz Oy
    Inventors: Holger Engdahl, Jouni Jäntti, Markku Lankinen, Antti Mattelmäki, Simo Suutari, Mika Kottila
  • Method and Apparatus for Thickening Lime Mud in a Disc Filter
    Publication number: 20080164222
    Abstract: The present invention relates to a method of treating lime mud slurry being generated in a causticizing process in a pulp mill in a disc filter, in which method the lime mud is fed in the filter, thickened on the filter discs and removed from the filter discs. The lime mud is treated in at least two stages in one and the same disc filter in such a way that the lime mud slurry entering the filter is fed onto only a part of the filter discs, on which lime mud is thickened and removed from the discs, and the removed lime mud is re-slurried in liquid, and the lime mud slurry thus obtained is fed onto a second part of the filter discs, on which lime mud is thickened and removed from the filter and led into a subsequent process stage. The invention also relates to an apparatus.
    Type: Application
    Filed: November 24, 2005
    Publication date: July 10, 2008
    Applicant: ANDRITZ OY
    Inventors: Holger Engdahl, Jouni Jantti, Markku Lankinen, Antti Mattelmaki, Simo Suutari, Mika Kottila