LF炉底吹CO<sub>2</sub>气体对钢液质量影响及透气砖侵蚀的研究

董凯; 朱荣; 刘润藻; 王欢; 周春芳

doi:10.13374/j.issn1001-053x.2014.s1.042

LF炉底吹CO₂气体对钢液质量影响及透气砖侵蚀的研究

董凯^1, ,,
朱荣²,
刘润藻²,
王欢²,
周春芳³

1. 北京科技大学机械工程学院, 北京 100083;
2. 北京科技大学冶金与生态工程学院, 北京 100083;
3. 北京中冶设备研究设计总院有限公司, 北京 100029

详细信息

通信作者:
董凯,E-mail:dongkaismanker@163.com

分类号: TF769.2
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出版历程
- 收稿日期: 2013-11-17
- 网络出版日期: 2021-07-18

Influence of bottom blowing CO₂ in LF on molten steel quality and erosion of ventilated bricks

1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
3. Beijing Metallurgical Equipment Research & Design Corporation Ltd., China Metallurgical Group Corporation, Beijing 100029, China

摘要

摘要: 为探索LF炉底吹CO₂气体的冶金行为，将CO₂气体用于LF炉精炼过程中，对LF炉底吹CO₂气体工艺进行热力学分析，并利用75 t LF炉进行底吹不同比例CO₂与Ar混合气体的实验．研究发现：底吹CO₂气体精炼过程中不会造成钢液大量脱碳，平均每炉碳氧化量在0.3 ～ 0.8 kg，钢液中夹杂物的种类、形貌和组成变化较小，夹杂物当量密度减小，提高了钢液洁净度，底吹CO₂气体不会加重钢包透气砖的侵蚀，实验表明LF炉可使用CO₂气体进行精炼．
- LF /
- 二氧化碳 /
- 洁净度 /
- 侵蚀
Abstract: In order to explore the metallurgical behavior of bottom blowing CO₂ in ladle furnace, CO₂ was used during the LF refining process, some thermodynamics calculation of bottom blowing CO₂ was studied, and some exploratory experiments were conducted with different proportions of CO₂ to Ar during the LF refining process in industry. The results show that it can cause the little oxidation of C in molten steel with the process of bottom blowing CO₂, the average oxidation of C is from 0.3 to 0.8 kg. Compared with bottom blowing Ar, the types and composition of inclusions have less change and the equal yield density of inclusions decreases and the cleanness of steel is improved, it will not aggravate the erosion of ventilated bricks of LF. So it is possible to use CO₂ in LF for refining.
- ladle furnace /
- CO₂ /
- cleanness /
- erosion

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