TY - JOUR
T1 - Optimization of the blowing sequence in a top and bottom blowing converter containing pretreated hot metal
AU - Kato, Yoshiei
AU - Takahashi, Yukio
AU - Sakuraya, Toshikazu
AU - Fujii, Tetsuya
AU - Omiya, Shigeru
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1990
Y1 - 1990
N2 - Experimental and theoretical studies have been carried out to clarify metallurgical reactions in combined blowing converters affected by the oxygen flow rates from the top and the bottom of the furnace. The 5t combined blowing converter showed a decrease in oxygen content in the bath with in increase in the oxygen flow rate from the bottom, while the 5t bottom blowing converter showed a decrease in oxygen content with a decrease in the oxygen flow rate. These experimental results are interpreted in terms of an index, I, related to the inverse of the oxygen efficiency used for decarburization. Oxygen content in the steel melt and (T.Fe) in slag decrease with the decrease in the I value from LD to Q-BOP, which indicates that I is suitable for characterizing metallurgical reactions. The metallurgical reactions at blow end can be controlled by changing the oxygen flow rates of top and bottom blowing, based on the aimed I value.
AB - Experimental and theoretical studies have been carried out to clarify metallurgical reactions in combined blowing converters affected by the oxygen flow rates from the top and the bottom of the furnace. The 5t combined blowing converter showed a decrease in oxygen content in the bath with in increase in the oxygen flow rate from the bottom, while the 5t bottom blowing converter showed a decrease in oxygen content with a decrease in the oxygen flow rate. These experimental results are interpreted in terms of an index, I, related to the inverse of the oxygen efficiency used for decarburization. Oxygen content in the steel melt and (T.Fe) in slag decrease with the decrease in the I value from LD to Q-BOP, which indicates that I is suitable for characterizing metallurgical reactions. The metallurgical reactions at blow end can be controlled by changing the oxygen flow rates of top and bottom blowing, based on the aimed I value.
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U2 - 10.2355/tetsutohagane1955.76.4_560
DO - 10.2355/tetsutohagane1955.76.4_560
M3 - Article
AN - SCOPUS:0025417637
VL - 76
SP - 560
EP - 567
JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
SN - 0021-1575
IS - 4
ER -