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:
Jun. 16, 2020

Filed:

Apr. 26, 2016
Applicant:

Kobe Steel, Ltd., Kobe-shi, JP;

Inventors:

Yui Hosono, Kobe, JP;

Masaki Shimamoto, Kobe, JP;

Takao Harada, Kobe, JP;

Shingo Yoshida, Kobe, JP;

Shoichi Kikuchi, Kobe, JP;

Taiji Hatakeyama, Kobe, JP;

Assignee:

Kobe Steel, Ltd., Kobe-shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 1/24 (2006.01); C22B 1/245 (2006.01); C21B 13/00 (2006.01);
U.S. Cl.
CPC ...
C22B 1/24 (2013.01); C21B 13/00 (2013.01); C22B 1/245 (2013.01);
Abstract

The reduced iron manufacturing method of the present invention includes preparing an agglomerate by agglomerating a mixture containing an iron oxide-containing substance and a carbonaceous reducing agent, and preparing reduced iron by heating the agglomerate to reduce iron oxide in the agglomerate, characterized in that Expression (I) as follows is satisfied:≤51  (I)where Ois the mass percentage of oxygen contained in the iron oxide in the agglomerate, Cis the mass percentage of total fixed carbon contained in the agglomerate, and Xis the mass percentage of particles having a particle diameter of 105 μm or less with respect to the total mass of particles configuring the carbonaceous reducing agent.


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