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Title:
METHOD FOR ESTIMATING DEPOSITIONAL SHAPE OF BLAST FURNACE FILLING AND METHOD FOR SUBSTITUTING BLAST FURNACE COKE
Document Type and Number:
WIPO Patent Application WO/2023/021870
Kind Code:
A1
Abstract:
The present invention provides a method for estimating the depositional shape of a furnace filling obtained after furnace coke has been consumed using a burner to activate a blast furnace in the blast furnace during blast stop with reduced burden level.　Provided is a method for estimating the depositional shape of a furnace filling obtained after furnace coke has been consumed using a burner inserted into a blast furnace via a tap hole of said blast furnace to activate the blast furnace in the blast furnace during blast stop with reduced burden level, said method comprising a step for estimating the depositional shape of the furnace filling during blast stop with reduced burden level; a step for estimating a furnace coke filling region from the depositional shape of the furnace filling estimated in said step and from the shape of a solidified layer in a furnace bottom part; a step for estimating the amount of the furnace coke consumed using the burner; and a step for estimating, from said amount of the furnace coke, the depositional shape of the furnace filling after the consumption of the furnace coke.

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Inventors:
MATSUNAGA RYOTARO (JP)
MORIYA KOTA (JP)
ICHIKAWA KAZUHIRA (JP)
YAMAMOTO TETSUYA (JP)
Application Number:
PCT/JP2022/026800
Publication Date:
February 23, 2023
Filing Date:
July 06, 2022
Export Citation:
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Assignee:
JFE STEEL CORP (JP)
International Classes:
C21B5/00; C21B7/24
Foreign References:
JP2014047397A2014-03-17
JPS6465211A1989-03-10
JP2018003044A2018-01-11
JP2016030833A2016-03-07
JPH05295415A1993-11-09
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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