Zhou Chaogang, Li Jing, Wu He, Yang Kezhi, Cai Kesen, Wu Guoping, Cao Yuliang. Study of Factors Affecting Liquid Steel Rephosphorization[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(3): 116-122. doi: 10.7513/j.issn.1004-7638.2014.03.024
Citation:
Zhou Chaogang, Li Jing, Wu He, Yang Kezhi, Cai Kesen, Wu Guoping, Cao Yuliang. Study of Factors Affecting Liquid Steel Rephosphorization[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(3): 116-122. doi: 10.7513/j.issn.1004-7638.2014.03.024
Zhou Chaogang, Li Jing, Wu He, Yang Kezhi, Cai Kesen, Wu Guoping, Cao Yuliang. Study of Factors Affecting Liquid Steel Rephosphorization[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(3): 116-122. doi: 10.7513/j.issn.1004-7638.2014.03.024
Citation:
Zhou Chaogang, Li Jing, Wu He, Yang Kezhi, Cai Kesen, Wu Guoping, Cao Yuliang. Study of Factors Affecting Liquid Steel Rephosphorization[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(3): 116-122. doi: 10.7513/j.issn.1004-7638.2014.03.024
1. School of Metallurgy and Ecologic Engineering, University of Science and Technology Beijing, State Key Laboratory of Advanced Metallurgy, Beijing 100083, China;
2. Nanjing Iron and Steel Co. Ltd., Nanjing 210035, Jiangsu, China
In order to effectively control liquid steel rephosphorization,the total rephosphorization quantity in liquid steel,by slag tapping,alloy additions、smelting fluxes had been calculated,and effect of tapping conditions on total rephosphorization and rephosphorization by slag was investigated in this paper.The calculation results showed that total rephosphorization originated from slag tapping,alloying addition and fluxes,where alloy made biggest contribution to total rephosphorization and fluxes the less effect.Besides,the combination of tapping control at 1 620~1 640℃,slag basicity at 5,0.028%~0.035% carbon and more than 17% FeO effectively controlled the total rephosphorization quantity.When controlling slag basicity at 5,tapping temperature of 1 620~1 627℃,and~23% FeO,the rephosphorization by slag trapping could be effectively reduced.
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