The effect degree is different due to the flux optical basicity change at the different stage,but the theoretical rephosphorization quantity is coincidence with the chemical analysis result.

• 通过分析表明钢包渣光学碱度的变化在不同阶段对钢水回磷量的影响是不同的,利用光学碱度理论计算的回磷量与实际检验结果符合较好。