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:
Dec. 16, 2025
Filed:
Mar. 07, 2023
Applicants:
Midrex Technologies, Inc., Charlotte, NC (US);
Kobe Steel, Ltd., Kobe, JP;
Inventors:
Haruyasu Michishita, Charlotte, NC (US);
Koji Tokuda, Kobe, JP;
Tsuyoshi Mimura, Kobe, JP;
Katsuma Fujiwara, Kobe, JP;
Assignees:
Kobe Steel, Ltd., Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
C21B 13/12 (2006.01); C21B 13/00 (2006.01);
U.S. Cl.
CPC ...
C21B 13/12 (2013.01); C21B 13/002 (2013.01); C21B 2100/60 (2017.05); C21B 2300/02 (2013.01);
Abstract
According to embodiments, disclosed is a method and system to maintain the soft and sparse slag characteristic favorable for an electric arc to efficiently transfer the energy to molten iron with the power input per furnace area higher than 600 KW/m2 while keeping FeO amount less than 5% in the slag and carbon amount higher than 2.5% in the product hot metal at a DRI melting furnace.