Patents Assigned to Universal Refractories, Inc.
  • Magnesium oxide castable refractory foundry ladle liners
    Patent number: 9422195
    Abstract: Refractory foundry ladle liners made from castable magnesium oxide-based compositions are disclosed. The liner compositions include MgO-containing aggregate, Al2O3-containing aggregate, and an inorganic binder. The ladle liners are cast into shape, placed into ladle shells, and packed with sand. The foundry ladle assemblies, including the pre-cast MgO-based ladle liners, are reusable for multiple foundry operations.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: August 23, 2016
    Assignee: Universal Refractories, Inc.
    Inventors: William J. Chilli, Leroy F. Thompson