Method of detecting abnormality at blast furnace and method of operating blast furnace

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United States of America Patent

PATENT NO 10151006
APP PUB NO 20160153062A1
SERIAL NO

14896805

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Abstract

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A method of detecting an abnormality in a blast furnace, wherein the abnormality causes clogging of a tuyere unit of the blast furnace, the method including capturing an image of a raceway unit through an in-furnace monitor window disposed at the tuyere unit; and determining that the abnormality has occurred when a brightness of the captured image is lower than or equal to a predetermined brightness threshold and a rate of decrease in the brightness is lower than or equal to a predetermined brightness-decrease-rate threshold.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATION2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 1000011 JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kodama, Toshifumi Kawasaki, JP 14 110
Morikawa, Yasuyuki Chiba, JP 5 6
Tanaka, Yusuke Tokyo, JP 410 2974
Yamahira, Naoshi Fukuyama, JP 9 11

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