ApplicationNo. 05/691929 filed on 06/01/1976
US Classes:65/99.4, Treating or removing impurities in molten metal or glass501/62, And aluminum501/64, And yttrium or rare earth (i.e., elements with atomic numbers 39 or 57-71)501/69, And divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.)501/70Calcium oxide containing
ExaminersPrimary: Kellogg, Arthur D.
Attorney, Agent or Firm
AbstractDisclosed is a technique for melting X-ray absorbing glass compositions by a process wherein molten glass is floated or supported on a bath of molten tin. The X-ray absorbing glass compositions are free of the oxides of lead, arsenic, antimony, bismuth, cadmium, and other readily reducible oxides to prevent discoloration of the glass upon contact with molten metal.