Skip to Content
Find More Like This
Return to Search

SYSTEM AND METHOD FOR PRODUCING METALLIC IRON

United States Patent Application

20120279353
A1
View the Complete Application at the US Patent & Trademark Office
A method for producing metallic iron including providing a hearth furnace having an entry end and a discharge end, a moveable hearth, and an exhaust stack positioned toward the entry end of the furnace, providing a carbonaceous hearth layer above the hearth, providing a layer of reducible material comprising reducing material and iron bearing material, delivering a flow of gases into the hearth furnace through burners, gas injection ports, or a combination thereof directing a flow of gases toward the entry end selected from combustible fuel, oxygen and carbon dioxide, oxygen and flue gas, oxygen and air, or a combination thereof to heat the furnace to a temperature sufficient to at least partially reduce the reducible material, increasing the velocity of the flow of gas to greater than 4 feet per second along the furnace, and heating the layer of reducible material to at least partially reduce the reducible material.
Englund, David J. (Bovey, MN), Schlichting, Mark (Crawfordsville, IN), Meehan, John (Conway, AR), Crouch, Jeremiah (Conway, AR), Wilson, Logan (Hot Springs, AR)
NU-IRON TECHNOLOGY, LLC (Charlotte NC)
13/ 498,806
September 29, 2010
GOVERNMENT INTERESTS [0002] The present invention was made with support by the Department of Energy, Sponsor Award DE-FG36-05GO15185. The United States government may have certain rights in the invention.