Title:
METHOD FOR DETECTING HEIGHT OF MOLTEN MATERIAL AND METHOD FOR OPERATING BLAST FURNACE
Document Type and Number:
WIPO Patent Application WO/2022/168503
Kind Code:
A1
Abstract:
A method for detecting the height of a molten material in a blast furnace that comprises a furnace body having a bosh part and a plurality of tuyeres through which hot blast is blown into a furnace lower part of the furnace body, wherein the height of a molten material retained in a furnace bottom part of the blast furnace is detected using the correspondence relationship between the height of the molten material and the increase rate of the pressure loss within the bosh part with respect to the pressure at the front of the tuyeres.
Inventors:
MATSUNAGA RYOTARO (JP)
ICHIKAWA KAZUHIRA (JP)
TAKAHASHI KOICHI (JP)
ICHIKAWA KAZUHIRA (JP)
TAKAHASHI KOICHI (JP)
Application Number:
PCT/JP2021/048673
Publication Date:
August 11, 2022
Filing Date:
December 27, 2021
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21B7/24; C21B5/00; F27D21/00
Foreign References:
| JP2017160498A | 2017-09-14 | |||
| JP2010138437A | 2010-06-24 | |||
| JPS4983476A | 1974-08-10 | |||
| JP2011158206A | 2011-08-18 | |||
| JPS5127809A | 1976-03-09 |
Other References:
HATANO MICHIHARU: "Effect of Charging Methods, Furnace Design and Liquid Surface on Gas Flow in Blast Furnace", TETSU-TO-HAGANE, vol. 63, no. 2, 1977, pages 217 - 226
IIDA MASAKAZU: "Analysis of Drainage Rate Variation of Molten Iron and Slag from Blast Furnace during Tapping", TETSU-TO-HAGANE, vol. 95, no. 4, pages 331 - 339
KASHIHARA YUSUKE: "Effect of Unconsumed Mixed Small Coke on Permeability in Lower Part of Blast Furnace", TETSU-TO-HAGANE, vol. 102, no. 12, pages 661 - 668
IIDA MASAKAZU: "Analysis of Drainage Rate Variation of Molten Iron and Slag from Blast Furnace during Tapping", TETSU-TO-HAGANE, vol. 95, no. 4, pages 331 - 339
KASHIHARA YUSUKE: "Effect of Unconsumed Mixed Small Coke on Permeability in Lower Part of Blast Furnace", TETSU-TO-HAGANE, vol. 102, no. 12, pages 661 - 668
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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