| 非脱磷铁水在210t转炉高拉碳法冶炼高碳钢的生产工艺研究及实践 |
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| 引用本文： | 田志红,李永东,王海宝,张小明,刘启江,李鹏程.非脱磷铁水在210t转炉高拉碳法冶炼高碳钢的生产工艺研究及实践[J].钢铁,2009,44(2). |
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| 作者姓名： | 田志红 李永东 王海宝 张小明 刘启江 李鹏程 |
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| 作者单位： | 1. 首钢技术研究院,北京,100041
2. 首钢第二炼钢厂,北京,100041 |
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| 摘 要： | 采用前期双渣法、高拉补吹法在210 t转炉上开展了高拉碳法冶炼高碳钢的大工业试验,出钢碳质量分数为0.04%~0.07%。对于非脱磷铁水冶炼高碳钢,脱磷是高碳出钢的关键环节。试验结果表明:前期双渣法5 min内可将铁水中磷的质量分数由0.078%~0.094%降至0.027%~0.038%;高拉补吹法在碳的质量分数为0.8%~1.1%时拉碳,钢水中磷的质量分数为0.014%~0.023%;这2种方法出钢钢水磷含量低,出钢后钢水回磷少,可以实现出钢时碳的质量分数为0.4%~0.7%,满足成品磷的质量分数小于0.015%。高碳条件下炉渣的高氧化性利于钢中磷的去除,实现高碳出钢。高拉碳法工业应用后,高碳钢平均出钢碳的质量分数由原来的0.22%提高到0.40%左右,钢中全氧的质量分数平均降低1.6×10-6,氮的质量分数平均降低5.1×10-6。
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| 关 键 词： | 高碳钢 高拉碳 脱磷 |
Study and Application of Catch Carbon to Produce High-Carbon Steel on 210 t BOF |
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| TIAN Zhi-hong,LI Yong-dong,WANG Hai-bao,ZHANG Xiao-ming,LIU Qi-jiang,LI Peng-cheng.Study and Application of Catch Carbon to Produce High-Carbon Steel on 210 t BOF[J].Iron & Steel,2009,44(2). |
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| Authors: | TIAN Zhi-hong LI Yong-dong WANG Hai-bao ZHANG Xiao-ming LIU Qi-jiang LI Peng-cheng |
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| Affiliation: | 1.Shougang Research Institute of Technology;Beijing 100041;China;2.No.2 Steelmaking Plant of Shougang;China |
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| Abstract: | Catch carbon is used to produce high carbon steel with double slag and catch carbon and re-blowing practice.Phosphorus removal is very crucial for refining non-dephosphorized hot metal to produce high carbon steel.The phosphorus content in hot metal was decreased from 0.078%-0.094% to 0.027%-0.038% in 5 minutes using double slag method.When the carbon content of 0.8%-1.1% in steel and phosphorus content could be reduced to 0.014%-0.023% using catch carbon and re-blowing method.Thus 0.4%-0.7% tapping carbon ... |
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| Keywords: | high carbon steel catch carbon dephosphorization |
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