The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 2021
Filed:
Nov. 03, 2017
Applicants:
Haruyasu Michishita, Charlotte, NC (US);
John Winter, Charlotte, NC (US);
Inventors:
Haruyasu Michishita, Charlotte, NC (US);
John Winter, Charlotte, NC (US);
Assignee:
Midrex Technologies, Inc., Charlotte, NC (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21B 13/00 (2006.01); C21B 13/02 (2006.01); C10J 3/02 (2006.01); C10J 3/48 (2006.01);
U.S. Cl.
CPC ...
C21B 13/0086 (2013.01); C10J 3/02 (2013.01); C10J 3/485 (2013.01); C21B 13/0073 (2013.01); C21B 13/02 (2013.01); C21B 13/029 (2017.05); C10J 2300/093 (2013.01); C10J 2300/0943 (2013.01); C10J 2300/0959 (2013.01); C10J 2300/0976 (2013.01); C10J 2300/12 (2013.01); C21B 2100/24 (2017.05); C21B 2100/282 (2017.05); C21B 2100/42 (2017.05); C21B 2100/80 (2017.05);
Abstract
A method and apparatus for producing direct reduced iron (DRI), including: generating a reducing gas in a coal gasifier using coal, oxygen, steam, and a first coke oven gas (COG) stream as inputs to the coal gasifier; and delivering the reducing gas to a shaft furnace and exposing iron ore agglomerates to the reducing gas to form metallic iron agglomerates. The method further includes delivering a second COG stream directly to the shaft furnace.