Patents Assigned to Ktrom Industries, Inc.
  • Metal removal apparatus and method
    Patent number: 4331472
    Abstract: A first metal is removed from solutions such as polluted water by contacting the solution with a metallic exchange medium. The metallic exchange medium comprises a plurality of buoyant elements, each comprising a substrate coated with a second metal sufficiently reactive to undergo an electrochemical exchange reaction with the first metal. The substrate can be expanded polystyrene beads and the metal can be iron such as sponge iron of small particle size.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: May 25, 1982
    Assignee: Ktrom Industries, Inc.
    Inventor: James R. King, Jr.
  • Silver removal apparatus and method
    Patent number: 4331473
    Abstract: Silver is recovered from solutions such as photographic fixer solutions by contacting the solution with a metallic exchange medium. The metallic exchange medium comprises a plurality of buoyant elements, each comprising a substrate coated with iron. The substrate can be expanded polystyrene beads and the iron can be sponge iron of small particle size.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: May 25, 1982
    Assignee: Ktrom Industries, Inc.
    Inventor: James R. King, Jr.