Patents Assigned to Intermountain Research & Development
  • Method of operating a rotary calciner retrofitted to coal-firing
    Patent number: 4462794
    Abstract: Method of operating a rotary calciner retrofitted from oil- or natural gas-firing to coal-firing, in which coal is burned in a coal furnace and the coal combustion gases are then heated further in a booster burner utilizing oil or natural gas, to raise the combustion gas temperature to permit processing of calcine at up to a design capacity rate.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: July 31, 1984
    Assignee: Intermountain Research & Development
    Inventors: Henry A. Pfeffer, III, Judith N. Fradkin