Title:
METHOD FOR DETECTING FLUCTUATION IN COAGULATION LAYER AND BLAST FURNACE OPERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/220751
Kind Code:
A1
Abstract:
Provided are: a method for detecting a fluctuation in a coagulation layer capable of detecting a fluctuation in a coagulation layer at an early stage; and a blast furnace operation method. In the method for detecting a fluctuation in a coagulation layer, the fluctuation in the coagulation layer at the bottom of a blast furnace is detected using the amount of heat supplied to a molten iron at the bottom of the blast furnace during a predetermined period and the amount of heat of the molten iron tapped off.
Inventors:
ICHIKAWA KAZUHIRA (JP)
SATO TAKESHI (JP)
YAMAMOTO TETSUYA (JP)
ITO TOMOHIKO (JP)
SATO TAKESHI (JP)
YAMAMOTO TETSUYA (JP)
ITO TOMOHIKO (JP)
Application Number:
PCT/JP2021/014778
Publication Date:
November 04, 2021
Filing Date:
April 07, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21B5/00; C21B7/24
Foreign References:
| JPS5732308A | 1982-02-22 | |||
| JP2007077440A | 2007-03-29 | |||
| JPH10273708A | 1998-10-13 | |||
| JPH07278627A | 1995-10-24 | |||
| JP2016006221A | 2016-01-14 | |||
| JPH02115311A | 1990-04-27 |
Other References:
YOSHIKAWA FUMIAKI: "Estimation of refractory wear and solidified layer distribution in the blast furnace hearth and its application to the operation", TETSU-TO-HAGANE, vol. 73, no. 15, 1987, pages 2068,2075
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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