Optimization of Process for 180 t Top and Bottom Combined Blown Converter Steelmaking High-Phosphorus Steel with Low phosphorus and Low Silicon Metal

管挺; 邹长东; 程奎生; 王建华

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Optimization of Process for 180 t Top and Bottom Combined Blown Converter Steelmaking High-Phosphorus Steel with Low phosphorus and Low Silicon Metal

更新时间：2026-01-21

- Optimization of Process for 180 t Top and Bottom Combined Blown Converter Steelmaking High-Phosphorus Steel with Low phosphorus and Low Silicon Metal
- Special Steel Vol. 35, Issue 6, Pages: 24-27(2014)
- 作者机构：
  
  1. 江苏省(沙钢)钢铁研究院,张家港,215625
  2. 沙钢集团有限公司宏发炼钢厂,张家港,215625
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 June 2014，
  
  Online First：19 August 2022，
  
  Published：19 August 2014
- 稿件说明：
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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：

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：

摘要

在统计分析了转炉前期炉渣碱度和钢水温度

终点炉渣碱度、终渣全铁含量和终点钢水温度对脱磷率影响的基础上

优化了0.29%Si

0.085%P铁水180t复吹转炉的高磷钢冶炼工艺。200炉冶炼结果表明

通过使用低枪位使钢水快速脱碳升温

控制前期炉渣碱度≥2.2、终点炉渣碱度2.8~3.2

终点炉渣全铁含量≤17%

转炉出钢温度1 650~1 680℃

可控制脱磷率≤60%

终点钢水磷含量均值为0.035%。

Abstract

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%.

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