TY - JOUR
T1 - Effect of stirring force by bottom blown gas and partial pressure of CO in it on characteristics of metallurgical reaction in a converter
AU - Kishimoto, Yasuo
AU - Kato, Yoshiei
AU - Sakuraya, Toshikazu
AU - Fujii, Tetsuya
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1989
Y1 - 1989
N2 - Experiments were carried out in 5 t converter using five kinds of gases as a bottom blown gas. The results obtained are summarized as follows: Independently of the bottom blown gas, oxygen concentration dissolved in steel decreases with increasing gas flow rate of bottom blown gas. Taking into consideration oxygen transfer from metal to slag, the model can reasonably explain the phenomena that concentrations of carbon and oxygen reduce to those in equilibrium with less than 1.0 atm of CO. The amount of oxygen transfer from metal to slag increases with increasing the stirring force by bottom blown gas and decreasing carbon concentration in molten steel. The effect of dilution of PCO on behavior of oxygen concentration in steel and (%T.Fe) in slag is considered to be small. Hence, the decrease of oxygen and (%T.Fe) in IOD(Inert and Oxygen Gases Decarburization) mode result from the increase of stirring intensity by inert gas blown from bottom.
AB - Experiments were carried out in 5 t converter using five kinds of gases as a bottom blown gas. The results obtained are summarized as follows: Independently of the bottom blown gas, oxygen concentration dissolved in steel decreases with increasing gas flow rate of bottom blown gas. Taking into consideration oxygen transfer from metal to slag, the model can reasonably explain the phenomena that concentrations of carbon and oxygen reduce to those in equilibrium with less than 1.0 atm of CO. The amount of oxygen transfer from metal to slag increases with increasing the stirring force by bottom blown gas and decreasing carbon concentration in molten steel. The effect of dilution of PCO on behavior of oxygen concentration in steel and (%T.Fe) in slag is considered to be small. Hence, the decrease of oxygen and (%T.Fe) in IOD(Inert and Oxygen Gases Decarburization) mode result from the increase of stirring intensity by inert gas blown from bottom.
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U2 - 10.2355/tetsutohagane1955.75.8_1300
DO - 10.2355/tetsutohagane1955.75.8_1300
M3 - Article
AN - SCOPUS:0024714578
VL - 75
SP - 1300
EP - 1307
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 - 8
ER -