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.

Date of Patent:
Aug. 30, 2022

Filed:

Sep. 21, 2018
Applicant:

Nucor Corporation, Charlotte, NC (US);

Inventors:

Bradford Granger True, Rock Hill, SC (US);

David William Hendrickson, Hibbing, MN (US);

Assignee:

NUCOR CORPORATION, Charlotte, NC (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B22F 1/02 (2006.01); C21B 13/00 (2006.01); C22B 1/24 (2006.01); C21B 13/12 (2006.01); C21B 13/14 (2006.01);
U.S. Cl.
CPC ...
C21B 13/0046 (2013.01); C21B 13/0086 (2013.01); C21B 13/0093 (2013.01); C22B 1/2406 (2013.01); C21B 13/12 (2013.01); C21B 13/143 (2013.01);
Abstract

A DRI product and method of forming the DRI product. DRI is formed from a reducing process, and thereafter the DRI is subjected to another heat treatment that produces a DRI product. The DRI product formed has a metallic shell around at least a portion of a DRI core. The heat treatment may be delivered through the use of a plasma torch, a gas burner, an oven, or any other like heat source. The heat treatment may heat the DRI for a fraction of a second and quickly cool the DRI in order to melt the surface and form the metallic shell without vaporizing a significant portion of the DRI and without losing a significant amount of the latent energy in the DRI.


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