Patents Assigned to Wessel-Werk Gesellschaft mit beschrankter Haftung
  • Method of refining the silicatic slag phase obtained in the thermal recovery of phosphorus from phosphates
    Patent number: 4243425
    Abstract: A method for the refining of the silicatic slag phase produced in the thermal recovery of phosphorus from phosphates, which method comprises treating the slag, in the form of finely granular solid material, with steam at a temperature between 600.degree. C. and the softening temperature of the slag.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: January 6, 1981
    Assignee: Wessel-Werk Gesellschaft mit beschrankter Haftung
    Inventor: Walter Kerstan