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SYSTEM AND METHOD FOR COOLING AND REMOVING IRON FROM A HEARTH

United States Patent Application

20110017016
A1
View the Complete Application at the US Patent & Trademark Office
A system and method for cooling and removing metallic iron and other aggregate from a moving hearth is provided. Cooling may be provided by a secondary cooling system and a spray cooling system in a cooling zone. The secondary cooling system may include an arrangement of coolant tubes for absorbing heat. A flow of nitrogen may be provided through the cooling zone. The spray cooling system may provide evaporative cooling. Aggregate removal may be provided by a magnetic removal system, a plow system, and a sweeper system. The magnetic removal system uses a magnetic device and a moving belt to remove iron materials. The plow system uses a plow to separate and remove aggregate from the moving hearth. The sweeper system may use a vacuum device to pull materials from the moving hearth.
Hendrickson, David W. (Coleraine, MN), Bleifuss, Rodney L. (Grand Rapids, MN), Mendrola, Raymond P. (Pittsburgh, PA), Van Scoy, Clayton A. (Butler, PA), Kaminski, Richard A. (Pittsburgh, PA), Bushman, James Donald (Pittsburgh, PA), Sutherland, Carl Emil (Baden, PA)
Nu-Iron Technology, LLC (Charlotte NC)
12/ 522,867
January 11, 2008
GOVERNMENT INTERESTS [0002] The present invention was made with support by the Economic Development Administration, Grant No. 06-69-04501, and the Department of Energy, Sponsor Award DE-FG36-05G015185. The United States government may have certain rights in the invention.