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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 (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
AMANO Shota (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
HAYASHI Ryoya (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
KIKUCHI Naoki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
YOKOMORI Rei (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
KODAMA Toshifumi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
KATO Kohei (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2018/024089
Publication Date:
January 03, 2019
Filing Date:
June 26, 2018
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
International Classes:
C21C5/46; C21C5/30; F27D21/00
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JFE Techno-Research Corporation 7-1, Otemachi 2-chome, Chiyoda-k, Tokyo 04, 〒1000004, JP)
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