Patents Assigned to Plibrico Co. GmbH
  • Patent number: 4991825
    Abstract: An injection device for introducing gases into metallurgical vessels includes a gas sink with a plurality of gas-carrying ducts and formed as a refractory frustum, a metal layer enclosing an outer generated surface of the gas sink and its base area, a gas supply pipe exposed at a center of the metal-coated base area of the gas sink ad supplying gas to the gas-carrying ducts, and a perforate block enclosing the metal-coated generated surface of the gas sink. The upper end of the gas sink is not enclosed by the perforate block, extends beyond the lining of the ladle bottom into the inside of the ladle, and is surrounded by refractory material.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: February 12, 1991
    Assignee: Plibrico Co. GmbH
    Inventors: Erich Struzik, Herbert Wagner, Dirk Stein