ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,893, issued on July 21, was assigned to NUCOR Corp. (Charlotte, N.C.).
"Direct reduced iron system and method" was invented by Brad True (Rock Hill, S.C.), Lindsay Leveen (Sausalito, Calif.) and Mirmohammadyousef Motamedhashemi (Gonzales, La.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of direct reduction of iron (DRI) is disclosed, the method comprising generating metallic iron by removing oxygen from iron ore using a reducing gaseous mixture with excess carbon monoxide that produces an excess CO2 by-product is provided. CO2 by-product is optionally sequestered. A system for carrying out the method is also disclosed."
The patent was fi...