Behavior of phosphorus enrichment in dephosphorization slag at low temperature and low basicity
来源期刊：International Journal of Minerals Metallurgy and Materials2021年第1期
论文作者：Ge-fan Ye Jian Yang Run-hao Zhang Wen-kui Yang Han Sun
文章页码：66 - 75
摘 要：At low basicity and low temperature, the dephosphorization behavior and phosphorus distribution ratio（LP） between slag and molten steel in the double slag and remaining slag process were studied with a 180 t basic oxygen furnace industrial experiment.The dephosphorization slags with different basicities were quantitatively analyzed.At the lower basicity range of 0.9–2.59, both LP and dephosphorization ratio were increased as the basicity of dephosphorization slag increased.Dephosphorization slag consisted of dark gray P-rich, light gray liquid slag,and white Fe-rich phases.With increasing basicity, not only did the morphologies of different phases in the dephosphorization slag change greatly, but the area fractions and P2O5 content of the P-rich phase also increased.The transfer route of P during dephosphorization can be deduced as hot metal → liquid slag phase + Fe-rich phase → P-rich phase.
Ge-fan Ye，Jian Yang，Run-hao Zhang，Wen-kui Yang，Han Sun
State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University
摘 要：At low basicity and low temperature, the dephosphorization behavior and phosphorus distribution ratio（LP） between slag and molten steel in the double slag and remaining slag process were studied with a 180 t basic oxygen furnace industrial experiment.The dephosphorization slags with different basicities were quantitatively analyzed.At the lower basicity range of 0.9–2.59, both LP and dephosphorization ratio were increased as the basicity of dephosphorization slag increased.Dephosphorization slag consisted of dark gray P-rich, light gray liquid slag,and white Fe-rich phases.With increasing basicity, not only did the morphologies of different phases in the dephosphorization slag change greatly, but the area fractions and P2O5 content of the P-rich phase also increased.The transfer route of P during dephosphorization can be deduced as hot metal → liquid slag phase + Fe-rich phase → P-rich phase.
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