Practice of 150t BOF Dephosphorizing Slag Control Process

宋延成; 刘吉刚

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Practice of 150t BOF Dephosphorizing Slag Control Process

更新时间：2026-01-21

- Practice of 150t BOF Dephosphorizing Slag Control Process
- Special Steel Vol. 39, Issue 1, Pages: 44-47(2018)
- 作者机构：
  
  1. 江阴兴澄特种钢铁有限公司特板炼钢分厂，江阴,214400
  2. 北京科技大学冶金与生态工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：28 August 2017，
  
  Online First：01 July 2022，
  
  Published：01 July 2018
- 稿件说明：
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宋延成, 刘吉刚. Practice of 150t BOF Dephosphorizing Slag Control Process[J]. Special Steel, 2018, 39(1): 44-47.
DOI：

宋延成, 刘吉刚. Practice of 150t BOF Dephosphorizing Slag Control Process[J]. Special Steel, 2018, 39(1): 44-47. DOI：

摘要

通过对150t转炉3000炉次冶炼数据的分析

得出炉渣中FeO 10%~17%

炉渣熔点1450℃以下

粘度1.0~1.2P时转炉炉渣氧化性IOS和炉渣光学碱度Λ

对渣-钢磷分配比L

的影响。为提高炉渣的脱磷能力

在转炉冶炼模型中动态设定石灰加入量

促使终渣光学碱度接近目标范围Λ

=0.74±0.01

渣组成接近于2CaO·SiO

相;当前冶炼模型中优先选择铁水还原性指数RIi目标为5.8~6.6

吹氧指数OMI设置目标1.05~1.20

优化炉渣氧化性指数IOS在10~15

能减少钢铁料损失和保证炉渣良好的脱磷效果。

Abstract

By analysis on steelmaking data of 150t BOF 3000 heats with 10% 〜17% FeO in slag

slag melting point less than 1450°C and viscosity 1.0 ~1.2 P

it is obtained the effect of BOF index of oxidation of slag (IOS) and slag optical basicity Λ

on slag-steel phosphor partition ratio. In order to improve the dephosphorizing capacity

in BOF steelmaking model the dynamic amount of lime addition is set to promote the optical basicity Λ

of end slag near to aim Λ

=0. 7 ±0. 01 with slag ingredient near to 2CaO·SiO

phase； and in steelmaking model

by priority selecting the aim hot metal reduction index Rli 5. 8 ~ 6. 6

setting the aim oxygen blowing index OMI 1.05 ~ 1.20

and optimizing the index of oxidation of slag IOS bing 10 ~ 15

the iron loss decreases and the dephosphorization effect is ensured.

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