Practice of Process to Prevent Nozzle Clogging During Bloom Concasting of Ultra-Low-Carbon Aluminium-Killed Steel

马富平; 董志强

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Practice of Process to Prevent Nozzle Clogging During Bloom Concasting of Ultra-Low-Carbon Aluminium-Killed Steel

更新时间：2026-01-21

- Practice of Process to Prevent Nozzle Clogging During Bloom Concasting of Ultra-Low-Carbon Aluminium-Killed Steel
- Special Steel Vol. 35, Issue 1, Pages: 23-25(2014)
- 作者机构：
  
  1. 北京科技大学冶金与生态工程学院,北京,100083
  2. 邢台钢铁有限责任公司,邢台,054027
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：20 August 2013，
  
  Online First：05 September 2022，
  
  Published：05 September 2014
- 稿件说明：
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马富平, 董志强. Practice of Process to Prevent Nozzle Clogging During Bloom Concasting of Ultra-Low-Carbon Aluminium-Killed Steel[J]. Special Steel, 2014, 35(1): 23-25.
DOI：

马富平, 董志强. Practice of Process to Prevent Nozzle Clogging During Bloom Concasting of Ultra-Low-Carbon Aluminium-Killed Steel[J]. Special Steel, 2014, 35(1): 23-25. DOI：

摘要

研究了铁水脱硫预处理-80 t顶底复吹转炉-LF-RH-280 mm×325 mm方坯连铸流程生产XGM6钢(/%:0.012C

≤0.012Si

≤0.08Mn

≤0.015P

≤0.010S)等超低碳铝镇静钢时水口堵塞的原因和防止措施。通过控制转炉终点[O

]

≤600×10

-6

LF顶渣为高铝渣+电石

RH-OB脱碳后加铝粒脱氧

控制RH终点氧含量20×10

-6

~30×10

-6

RH终点[Al

]

≤0.009%

中间包钢水过热度25~40℃

[Al

]

≤0.004%等工艺措施

基本避免超低碳铝镇静钢水口堵塞

连浇炉数由不足2炉提高到8炉以上。

Abstract

The cause and preventing measures for nozzle clogging during steelmaking process of ultra-low-carbon aluminium-killed steel such as XGM6 steel (/%: 0. 012C

≤0. 012Si

≤0. 08Mn

≤0. 015P

≤0.010S) produced by hot metal pre-desulphurization process-80 t top and bottom combined blown converter-LF-RH-280 mm x325 mm bloom concasting flow sheet have been studied. With using the process measures including controlling converter end [ O

]

≤600 x 10

-6

LF top slag- high alumina slag + carbide

deoxidizing by adding aluminium shot after RH-OB decarburisation

controlling RH end [O

]

20 x 10

-6

~30 x 10

-6

RH end [Al

]

≤ 0. 009%

tundish liquid superheating extent 25 ~40 °C and [Al

]

≤0. 004%

the nozzle clogging of liquid of ultra-low-carbon aluminium-killed steel has basically be

en avoided

continuous- continuous casting heats increase from less than 2 heats to more than 8 heats.

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