公开(公告)号：EP3620542A1

公开(公告)日：2020-03-11

申请号：EP18823747.3

申请日：2018-06-26

申请人： JFE Steel Corporation

发明人： TAKAHASHI Yukio ,  AMANO Shota ,  HAYASHI Ryoya ,  KIKUCHI Naoki ,  YOKOMORI Rei ,  KODAMA Toshifumi ,  KATO Kohei

IPC分类号： C21C5/46 ,  C21C5/30 ,  F27D21/00 ,  F27D21/02 ,  F27D19/00

摘要： In a converter in which hot metal in the converter is subjected to oxidation refining by blowing an oxidizing gas on the hot metal from a top blowing lance, a state in the converter is accurately grasped in real time to the productivity and the iron yield.
A method for monitoring the operation of the converter according to the present invention is a method for monitoring the operation of a converter 2 in which hot metal 5 is subjected to refining by blowing an oxidizing gas from a top blowing lance 3, the method including measuring the emission spectrum of a throat combustion flame 12 of the converter or the emission spectrum of a tap hole combustion flame observed through the tap hole of the converter with a spectroscopic camera 6, calculating a temporal change in emission intensity in a wavelength range of 580 to 620 nm of the emission spectrum measured, and presuming a change of a state in the converter in accordance with the calculated temporal change in emission intensity.