ABSTRACT

The kinetic models of hot-metal dephosphorization and rephosphorization have been widely used in the analysis of phosphorus mass transfer, but most of the existing models deviate greatly from the experimental results. Therefore, to reduce the deviation of traditional models in data fitting, according to the change in hot-metal phosphorus content during dephosphorization or slag phosphorus content during rephosphorization, a new dephosphorization model and rephosphatization model were established by introducing a concept of ‘dynamic relative area’, and their rationality and universality were proved. The results showed that the new dephosphorization model presents obvious advantages in the fitting accuracy of [%P]-time data, but no significant difference is observed between the new and old rephosphorization models. Besides, the RHS-time curve stability of the new dephosphorization model is much higher than that of the old model, while the RHS-time curves of the new and old rephosphorization models show little difference and remain relatively stable.

摘要

铁水脱磷和再磷的动力学模型已广泛应用于磷的传质分析，但现有模型大多与实验结果存在较大偏差。因此，为减少传统模型在数据拟合中的偏差，根据脱磷过程中铁水磷含量或再磷化过程中渣磷含量的变化，引入“动态相对面积”概念，建立了新的脱磷模型和再磷化模型。 '，并证明了它们的合理性和普遍性。结果表明，新的脱磷模型在[%P]-时间数据的拟合精度上具有明显优势，但新旧复磷模型之间没有明显差异。除了，