The amount o£ molten iron for high carbon liquid tapping is 2.9% higher than the conventional process by theoretical calculation. The dephosphorization law at initial smelting period of BOF is studied

The results show that at the first stage with control of ( FeO) 15%

slag basicity 1.8 to 2. 2 and bath temperature 1400 ~ 1450 t

then the average dephosphorization rate up to 75% at initial smelting period of BOF. The oxygen blowing system

feeding system and bottom blowing system of smelting process are optimized

that the end-point carbon content can be increased from original 0. 07 % to 0.21%

and the end-point phosphorus content can be reduced from original 0.016% to 0.011%.