Title:
CONVERTER OPERATION MONITORING METHOD AND CONVERTER OPERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/004157
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve the productivity and iron yield of a converter through accurate monitoring of in-furnace conditions in real time, said converter being used for oxidative refining of molten iron contained within the converter by blowing oxidizing gas thereto from a top-blowing lance. A converter operation monitoring method according to the present invention is a monitoring method for monitoring operations of a converter 2 used for refining molten iron 5 by blowing oxidizing gas thereto from a top-blowing lance 3, wherein the emission spectrum of a furnace-mouth combustion flame 12 of the converter or the emission spectrum of a tapping-hole combustion flame observed through a tapping-hole of the converter is measured using a spectroscopic camera 6, the temporal change in emission intensity in the 580-620 nm wavelength range of the measured emission spectrum is calculated, and changes in the in-furnace conditions are estimated on the basis of the calculated temporal change in the emission intensity.
Inventors:
TAKAHASHI YUKIO (JP)
AMANO SHOTA (JP)
HAYASHI RYOYA (JP)
KIKUCHI NAOKI (JP)
YOKOMORI REI (JP)
KODAMA TOSHIFUMI (JP)
KATO KOHEI (JP)
AMANO SHOTA (JP)
HAYASHI RYOYA (JP)
KIKUCHI NAOKI (JP)
YOKOMORI REI (JP)
KODAMA TOSHIFUMI (JP)
KATO KOHEI (JP)
Application Number:
PCT/JP2018/024089
Publication Date:
January 03, 2019
Filing Date:
June 26, 2018
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21C5/46; C21C5/30; F27D21/00
Domestic Patent References:
| WO2011151143A2 | 2011-12-08 |
Foreign References:
| JPH02500672A | 1990-03-08 | |||
| JPH0211097B2 | 1990-03-12 | |||
| JPS49113713A | 1974-10-30 | |||
| JPS60165313A | 1985-08-28 | |||
| JP2002285224A | 2002-10-03 | |||
| JP2014028992A | 2014-02-13 |
Other References:
CHIBA, KOICHI ET AL.: "The Mechanism of Atomic Emission at a Hotspot and Its Application to the On-line Analysis of Molten Iron", TETSU-TO-HAGANE, vol. 77, no. 11, November 1991 (1991-11-01), pages 1874 - 1880, XP055569335
WEN, HONGYUAN ET AL.: "Converter end-point prediction model using spectrum analysis and improved neural network algorithm", OPTICA APPLICATA, vol. 38, no. 4, 2008, pages 693 - 704, XP055569340, Retrieved from the Internet
WEN, HONGYUAN ET AL.: "Converter end-point prediction model using spectrum analysis and improved neural network algorithm", OPTICA APPLICATA, vol. 38, no. 4, 2008, pages 693 - 704, XP055569340, Retrieved from the Internet
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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