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氮的溶解度及预处理过程脱氮的实验研究

吴宝国, 董元篪, 周云, 王海川, 王世俊

吴宝国, 董元篪, 周云, 王海川, 王世俊. 氮的溶解度及预处理过程脱氮的实验研究[J]. 工程科学学报, 2004, 26(2): 125-129. DOI: 10.13374/j.issn1001-053x.2004.02.004
引用本文: 吴宝国, 董元篪, 周云, 王海川, 王世俊. 氮的溶解度及预处理过程脱氮的实验研究[J]. 工程科学学报, 2004, 26(2): 125-129. DOI: 10.13374/j.issn1001-053x.2004.02.004
WU Baoguo, DONG Yuanchi, ZHOU Yun, WANG Haichuan, WANG Shijun. Experimental Study on Nitrogen Solubility in Molten Iron and Denitrification during Hot Metal Pretreatment[J]. Chinese Journal of Engineering, 2004, 26(2): 125-129. DOI: 10.13374/j.issn1001-053x.2004.02.004
Citation: WU Baoguo, DONG Yuanchi, ZHOU Yun, WANG Haichuan, WANG Shijun. Experimental Study on Nitrogen Solubility in Molten Iron and Denitrification during Hot Metal Pretreatment[J]. Chinese Journal of Engineering, 2004, 26(2): 125-129. DOI: 10.13374/j.issn1001-053x.2004.02.004

氮的溶解度及预处理过程脱氮的实验研究

基金项目: 

安徽省高等学校青年教师科研资助项目(No.2003jq135)

详细信息
    作者简介:

    吴宝国 男,32岁,讲师,博士

  • 分类号: TF111.18

Experimental Study on Nitrogen Solubility in Molten Iron and Denitrification during Hot Metal Pretreatment

  • 摘要: 在实验室1573~1673 K条件下对铁水预处理过程进行了脱氮研究.结果表明,铁液中氧、硫和碳含量都在不同程度上影响氮在铁水中的溶解度,并用线形回归方法得到了氮溶解度与碳含量的关系式.预处理过程中初始碳含量对脱氮影响较为明显,在供氧强度相同的条件下,脱氮量随着铁水中碳含量的增加而增加.同时研究发现过程脱碳的同时能有效地脱氮,且脱碳量越大脱氮率越高.终点最低氮含量可达13×10-6,脱氮率超过50%,可满足超低氮钢对铁水中氮含量的要求.
    Abstract: Denitrification during hot metal pretreatment is studied under laboratory conditions in the range of 1573-1673 K. The results show that the oxygen, sulphur and carbon contents can somewhat reduce the nitrogen solubility in molten iron, and the nitrogen solubility is in linear regression relation with the carbon content. The effects of the initial carbon content on denitrification is obvious. At the same intensity for offering oxygen, the amount of removing nitrogen increases with increasing the carbon content in the hot metal. It is also found that effective denitrification takes place during decarbonizing in the pretreatment. The denitrification ratio is improved with the amount of decarbonization increasing. The lowest nitrogen content at the end point reaches to 13×10-6, and the denitrification ratio exceeds about 50%, which can meet the demand of ultra-low nitrogen steels for nitrogen content in molten iron.
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出版历程
  • 收稿日期:  2003-02-19
  • 网络出版日期:  2021-08-15
  • 刊出日期:  2004-02-24

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