Patents Assigned to Ogden Metals, Inc.
  • Passivating metallic cuttings and turnings
    Patent number: 4075370
    Abstract: A method of passivating iron-containing cuttings and turnings to prevent overheating thereof during storage and transportation, wherein the cuttings and turnings are fed through a rotating tumbler drum while being mixed with an aqueous slurry of calcium oxide or hydroxide, the tumbling being continued until the cuttings or turnings are thoroughly coated with the slurry. In a preferred embodiment, the cuttings and turnings are passed through a tumbling drum continuously, with the slurry being sprayed onto them as they enter the drum.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: February 21, 1978
    Assignees: Ogden Metals, Inc., Versar, Inc.
    Inventors: Richard D. Burlingame, Michael Markels, Jr.