| 超低碳钢的转炉终点控制 |
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| 引用本文： | 李朋欢,包燕平,岳峰,黄杰.超低碳钢的转炉终点控制[J].钢铁,2011,46(10):27-31. |
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| 作者姓名： | 李朋欢 包燕平 岳峰 黄杰 |
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| 作者单位： | 1. 北京科技大学冶金与生态工程学院， 北京 100083 2. 北京科技大学冶金工程研究院， 北京 100083 |
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| 摘 要： | 通过对国内某厂300t转炉终点相关数据的理论分析，发现影响转炉终点水平的有：转炉炉龄、转炉终点温度以及吹氧量等。转炉吹炼过程中存在一个临界碳含量。当转炉终点碳含量低于临界碳含量时，脱碳变得困难，钢水过氧化严重。采用规则溶液模型计算转炉渣中FeO的活度，据此计算的临界碳含量（质量分数）为0.02%~0.03%。根据理论分析和实际统计结果，300t转炉理想的终点碳质量分数为0.03%~0.05%。
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| 关 键 词： | 超低碳钢 转炉终点控制 碳氧积 |
| 收稿时间： | 2010-11-12 |
BOF End-Point Control of Ultra Low Carbon Steel |
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| LI Peng-huan,BAO Yan-ping,YUE Feng,HUANG Jie.BOF End-Point Control of Ultra Low Carbon Steel[J].Iron & Steel,2011,46(10):27-31. |
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| Authors: | LI Peng-huan BAO Yan-ping YUE Feng HUANG Jie |
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| Affiliation: | 1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | By analyzing the end-point data of a 300t-BOF in a domestic steelmaking company, it is founded that the factors of converter life, end-point temperature, oxygen consumption and so on have impacts on BOF end-point. A critical carbon content exists in the BOF blowing process. Below the critical carbon content, the decarburizing reaction gets harder and molten steel is greatly peroxided. The critical carbon content of 0.02%-0.03% is calculated corresponding to the ferrous oxide activity with regular solution model. The optimum end-point carbon content of 300t BOF is 0.03%-0.05% through the theory analysis and practice statistics. |
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| Keywords: | ultra low carbon steel BOF end-point control carbon-oxygen equilibrium |
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