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:
Nov. 03, 2026

Filed:

Nov. 17, 2021
Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Kazuhira Ichikawa, Tokyo, JP;

Tetsuya Yamamoto, Tokyo, JP;

Takeshi Sato, Tokyo, JP;

Yuki Kawashiri, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B 5/00 (2006.01); F27D 19/00 (2006.01);
U.S. Cl.
CPC ...
C21B 5/006 (2013.01); F27D 19/00 (2013.01); F27D 2019/0021 (2013.01);
Abstract

A supply heat amount estimating method for estimating an amount of heat supplied to pig iron in a blast furnace from an amount of heat supplied into the blast furnace and a rate of production of molten pig iron in the blast furnace, the supply heat amount estimating method includes: estimating a change in carried-out sensible heat by an in-furnace passing gas and a change in carried-in sensible heat supplied by a raw material preheated by the in-furnace passing gas and estimating the amount of heat supplied to the pig iron in the blast furnace in consideration of the estimated changes in the carried-out sensible heat and the carried-in sensible heat.


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Ichikawa, Kazuhira. (2026). Supply heat amount estimating method, supply heat amount estimating device, and blast furnace operating method (U.S. Patent No. 12781293). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12781293

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