Patents by Inventor Soren B. Christiansen

Soren B. Christiansen 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 operating a kiln plant with solid fuel firing in the precalcining zone
    Patent number: 4388067
    Abstract: A kiln plant for burning a pulverous material such as cement, which includes a preheater string for preheating raw material and a precalciner for receiving preheated raw material, the precalciner being fired with solid fuel, and a disintegrator provided adjacent the precalciner. Within the disintegrator the solid fuel, preferably coal, is crushed and mixed with a portion of the preheated raw material before passage into the precalciner. The invention also relates to a unique method for firing in the precalcining zone of the invention kiln plant.
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: June 14, 1983
    Assignee: F. L. Smidth & Co.
    Inventor: Soren B. Christiansen