Patents Assigned to ESM, Inc.
  • Composition for a fluidizing flux in the production of iron and steel
    Patent number: 4126453
    Abstract: A composition for use as a basic flux to aid in obtaining slag fluidity in the production of iron and steel that includes a mixture, as expressed by percentage weight, of iron oxide in the range of 20 to 80%, aluminum in the range of 2 to 80%, and silica in the range of 5 to 60%. A composition for use as an acid flux to aid in obtaining slag fluidity in the production of iron and steel that includes a mixture, as expressed by percentage weight, of sodium oxide in the range of 5 to 50%, aluminum in the range of 2 to 60%, and silica in the range of 20 to 80%. The slag fluidizing ingredients are prereacted forming shaped bodies or powders which are then added as acid and basic fluxes to the steel making furnaces for the purpose of fluidizing the slag thus formed in order to separate and remove the slag from molten metal.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: November 21, 1978
    Assignee: ESM, Inc.
    Inventors: Willis A. Heck, Roy E. Ferree
  • Screw feeder for granular material
    Patent number: 4057225
    Abstract: A screw feeder comprising a pair of augers of different diameters, coaxially and co-extensively arranged, which are driven by separate motors, one of which drives a mixing drum and auger of larger diameter, and the other drives the auger of smaller diameter. By rotating the outer auger at the slower speed of the drum and the inner auger at a higher speed, the particles or granular material fed to the augers will be thoroughly and uniformly mixed as well as propelled outwardly of the feed bin by screw feed action.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: November 8, 1977
    Assignee: ESM Inc.
    Inventor: Roy E. Ferree
  • Composition for a fluidizing flux in the production of iron and steel
    Patent number: 3982929
    Abstract: A composition for use as a basic flux to aid in obtaining slag fluidity in the production of iron and steel that includes a mixture, as expressed by percentage weight, of iron oxide in the range of 20 to 80%, aluminum in the range of 2 to 80%, and silica in the range of 5 to 60%. A composition for use as an acid flux to aid in obtaining slag fluidity in the production of iron and steel that includes a mixture, as expressed by percentage weight, of sodium oxide in the range of 5 to 50%, aluminum in the range of 2 to 60%, and silica in the range of 20 to 80%. The slag fluidizing ingredients are prereacted forming shaped bodies or powders which are then added as acid and basic fluxes to the steel making furnaces for the purpose of fluidizing the slag thus formed in order to separate and remove the slag from molten metal.
    Type: Grant
    Filed: February 9, 1973
    Date of Patent: September 28, 1976
    Assignee: ESM, Inc.
    Inventors: Willis A. Heck, Roy E. Ferre