The kinetic model of dephosphorization (De-P) based on the coupled reaction model by combination with the heat balance temperature model and the lime dissolution model was used for the De-P stage in the double slag converter steelmaking process. At the different De-P temperatures, 220-ton industrial experiments and 0.5-kg laboratorial experiments were conducted. The predicted results are consistent with both the industrial results and the laboratorial results. In industrial experiments, with increasing temperature, the P removal ratio increases first and then decrease with the highest P removal ratio at the temperature of 1664 K. The De-P rate increases rapidly at first, then decreases after reaching the peak. At the peak of the De-P rate, the value of interfacial oxygen activity also increases to the peak. The peak value of De-P rate decreases with the increase in temperature. The De-P is a first-order reaction with the activation energy of 241,992.3 J mol⁻¹. The value of the mass transfer coefficient increases with the increasing temperature.

双渣转炉炼钢脱磷阶段采用基于耦合反应模型、热平衡温度模型和石灰溶解模型的脱磷动力学模型。在不同的除磷温度下，进行了220吨工业试验和0.5公斤实验室试验。预测结果与工业结果和实验室结果一致。在工业实验中，随着温度的升高，P去除率先增大后减小，在1664 K的温度下P去除率最高。De-P速率先快速增加，达到峰值后减小。在De-P速率峰值时，界面氧活度值也升高至峰值。De-P速率的峰值随着温度的升高而降低。De-P 是一级反应，活化能为 241,992.3 J mol^-1。传质系数的值随着温度的升高而增加。