管挺, 邹长东, 程奎生, et al. Optimization of Process for 180 t Top and Bottom Combined Blown Converter Steelmaking High-Phosphorus Steel with Low phosphorus and Low Silicon Metal[J]. Special Steel, 2014, 35(6): 24-27.
管挺, 邹长东, 程奎生, et al. Optimization of Process for 180 t Top and Bottom Combined Blown Converter Steelmaking High-Phosphorus Steel with Low phosphorus and Low Silicon Metal[J]. Special Steel, 2014, 35(6): 24-27.DOI:
Based on statistic-analyzing the effect of converter earlier stage slag basicity and liquid temperature
end slag basicity
total iron content in end slag and end liquid temperature on dephosphorization rate
the process for 180 t top and bottom combined blown converter steelmaking high-phosphorus steel with 0. 29% Si and 0. 085% P metal has been optimized. The 200 heats steelmaking results show that with the measures including using low lance level blowing to quickly decarbonize and raise the temperature of liquid in bath
controlling earlier stage slag basicity ≥2. 2
end slag basicity 2. 8 ~ 3. 2
end total iron content in end slag ≤17% and converter tapping temperature of liquid 1 650 ~ 1 680 °C
it is available to control the dephosphorization rate ≤60% and the average phosphorus content in end liquid is 0. 035%.