Apparatus and method for continuous removal of oxides from metal
AssigneeDanieli Technology, Inc.
InventorStephen L. Feldbauer
Life of this patent
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Abstract
Oxides on the surfaces of metal are reduced by directing reducing gases at them in a forceful and turbulent manner in an enclosure. The oxide-bearing surface is heated to at least 900 degrees F.
Claims34
Method of continuously reducing oxides on the surface of metal comprising continuously moving said metal through an enclosure having an entrance and an exit for said metal, heating at least the surface of said metal in a heating zone near said entrance of said enclosure, introducing reducing gas to a cooling zone near said exit of said enclosure, directing said reducing gas toward said surface of said metal in a vigorous and turbulent manner in a reducing zone in said enclosure, and burning unreacted reducing gas below a flue near said entrance for said metal to create a draft of said reducing gas in said enclosure countercurrent to the movement of said metal.
Method of continuously reducing oxides on the surface of metal comprising continuously moving said metal through an enclosure having an entrance and an exit for said metal, heating at least the surface of said metal in a heating zone near said entrance of said enclosure, introducing reducing gas to a cooling zone near said exit of said enclosure, directing said reducing gas toward said surface of said metal in a vigorous and turbulent manner in a reducing zone in said enclosure, and burning unreacted reducing gas.
Method of continuously reducing oxides in mill scale on the surface of hot rolled steel strip comprising continuously moving said hot rolled steel strip through an enclosure having an entrance and an exit for said hot rolled steel strip, heating at least the surface of said hot rolled steel strip in a heating zone near said entrance of said enclosure, introducing reducing gas to a cooling zone near said exit of said enclosure, directing said reducing gas toward said surface of said hot rolled steel strip in a vigorous and turbulent manner in a reducing zone in said enclosure, and burning unreacted reducing gas.
Dependencies are inferred from the claim text.