Optimization and Production Practice of Top Slag Modifier for IF Steel DC06 with 260 t BOF-RH Flowsheet

胡巍; 徐斌; 黄嘉琦; 朱文睿; 黎季; 李任春; 刘俊山; 成日金

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Optimization and Production Practice of Top Slag Modifier for IF Steel DC06 with 260 t BOF-RH Flowsheet

更新时间：2026-01-21

- Optimization and Production Practice of Top Slag Modifier for IF Steel DC06 with 260 t BOF-RH Flowsheet
- Special Steel Vol. 42, Issue 3, Pages: 27-30(2021)
- 作者机构：
  
  1. 武汉科技大学省部共建耐火材料与冶金国家重点实验室
  2. 河北钢铁集团邯钢分公司邯宝炼钢厂
  3. 河北钢铁集团邯钢分公司技术中心
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：02 November 2020，
  
  Online First：11 November 2022，
  
  Published：11 November 2021
- 稿件说明：
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胡巍, 徐斌, 黄嘉琦, et al. Optimization and Production Practice of Top Slag Modifier for IF Steel DC06 with 260 t BOF-RH Flowsheet[J]. Special Steel, 2021, 42(3): 27-30.
DOI：

胡巍, 徐斌, 黄嘉琦, et al. Optimization and Production Practice of Top Slag Modifier for IF Steel DC06 with 260 t BOF-RH Flowsheet[J]. Special Steel, 2021, 42(3): 27-30. DOI：

摘要

为保证精炼渣有较好的脱氧与吸附夹杂物的能力

采取5种顶渣改质剂对无间隙原子钢（IF钢）转炉出钢钢包顶渣进行改质工业试验。并采用电感耦合等离子体原子发射光谱法（ICP-AES）对渣成分进行检测

运用FactSage软件对精炼渣粘度进行计算。研究结果表明

5种改质剂改质后

真空循环脱气（RH）出站时

5炉精炼渣中TFe含量控制在6.46%~7.76%

钙铝比（CaO）/（Al

）控制在1.60~1.86

1 600 ℃时精炼渣粘度在0.057~0.068 Pa·s

导致夹杂降级比为 2.10%~12.86%

3号改质剂（48.5% Al-10.2% Al

-18.1%CaO-6.0%SiO2-8.0% CaF

）综合性能最合适。采取转炉出钢碳由改进前的0.032%增大至0.045%

优化改质剂用于生产后

RH进站精炼渣中全铁（TFe）控制在7.13%

RH出站渣中FeO控制在5.52%

热轧时因顶渣改质造成的废次比为0.071%

降低了20.2%。

Abstract

In order to ensure that the refining slag has better deoxidation and absorption ability of inclusions

the five top slag modifiers are used to carry out industrial tests on the top slag of the converter tapping ladle of IF steel. ICP-AES (Induction Coupling Plasma-Atomic Emission Spectroscopy) is used to detect the slag composition and FactSage software is used to calculate the viscosity of refining slag. The results show the vacuum circulation degassing (RH) is out the station

after 5 kinds of madifiers are used

that the content of TFe in the refining slag of 5 heats is controlled at 6. 46% ~7. 76%

the ( CaO)/(Al

) ratio is 1

. 60 ~ 1. 86 at 1 600 ℃

the viscosity of refining slag is 0. 057 ~ 0. 068 Pa ·s

the degradation ratio of degradation caused by inclusions is 2. 10% ~ 12. 86%

and No. 3 modifier (48. 5% Al-10. 2% Al

-18. 1% CaO-6. 0% SiO2-8- 0% CaF

) has the best comprehensive performance. After the carbon content in the steel increases to 0. 045% from 0. 032% during converter tapping

and the optimized modifier is used in production

the TFe content in slag before RH is controlled at 7. 13%

and the FeO content in slag after RH is controlled at 5. 52% and during hot rolling

the ratio of off-and sub-quality products with top slag modification is 0. 071%

which is reduced by 20. 2%.

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