Investigation of the Influence of Slag Basicity on Metal Droplet Dephosphorization

Biswas, Jayasree; Drain, Phillip Brian; Gu, Kezhuan; Longbottom, Raymond J.; Chapman, Michael W.; Monaghan, Brian J; Coley, Kenneth S.

doi:10.1007/s11663-021-02350-z

Cited by 4 publications

(2 citation statements)

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“…However, under industrial practical experiments, the dephosphorization reaction could not achieve equilibrium. The dephosphorization rate was proposed to present the dephosphorization ability of slag under industrial practical experiments [24][25][26] . Thus, the dephosphorization rate is used to evaluated the effects of basicity, T.Fe content in slag and tapping temperature on dephosphorization in the present work.…”

Section: Effect Of Temperature and Slag Compositions On Dephosphoriza...mentioning

confidence: 99%

“…Yan et al 22) and Hoe et al 23) evaluated the effect of slag composition on dephosphorization based on high temperature laboratory experiments and thermodynamics calculations. To know the dephosphorization process clearly, Dogan et al [24][25][26] investigated the dephosphorization process by employing time-lapse sampling while monitoring simultaneous decarburization using a constant volume pressure increase technique (CVPI) with X-ray fluoroscopy. However, the above research work mainly focused on the formation mechanism of P-containing solid solution and its influence on dephosphorization by theoretical calculation or laboratory research, the effect of the slag phase on dephosphorization in the industrial steelmaking process has not been investigated specifically.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Slag Phase on Dephosphorization in BOF

Xia,

Wang,

et al. 2023

ISIJ Int.

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In this work, the effect of the slag phase on dephosphorization in BOF (basic oxygen furnace) is explored by industrial practical experiments. The research results show that the final dephosphorization rate is related to the phase of slag rather than basicity and T.Fe content in slag. The correlation between the dephosphorization ability of slag and the proportion of liquid phase (phase B) and phosphorus-containing solid solution phase (phase A) in the slag is much higher than that of RO (MgO•FeO, MnO•FeO) phase (phase C). The phosphorous partition fitting by using the minimum second-order multiplication proposed in this work is compared with the equations suggested by Healy and Ogawa. The comparison result shows that the dephosphorization ability of slag can be well predicted by analyzing the proportion of liquid phase and phosphorus-containing solid solution phase in slag, and the mechanism of the influence of the slag phase on dephosphorization is discussed.

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Section: Effect Of Temperature and Slag Compositions On Dephosphoriza...mentioning

confidence: 99%