| 钢液真空脱氮动力学研究 |
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| 引用本文： | 傅杰,唱鹤鸣,迪林,朱剑,陈伯平. 钢液真空脱氮动力学研究[J]. 钢铁, 2000, 35(10): 24-26,47 |
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| 作者姓名： | 傅杰 唱鹤鸣 迪林 朱剑 陈伯平 |
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| 作者单位： | 北京科技大学 |
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| 基金项目： | 国家 973项目“新一代钢铁材料的重大基础研究” |
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| 摘 要： | 研究了真空度对钢液脱氮动力学的影响。结果表明，真空度为６７Ｐａ及１１０Ｐａ进，脱氮的限制性环节为氮在钢液液相边界层中的传质，真空度为２０００Ｐａ时，脱氮的限制性环节为氮在气液界面的化学反应。真空下的碳氧反应对脱氧效果有明显的影响，当有碳氧反应时，钢液脱氮速度常数增大，同时钢液内生或外来固态粒会作为气泡形核核心，加速脱氮过程。
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| 关 键 词： | 碳氧反应 动力学 钢液真空脱氮 研究方法 |
STUDY ON KINETICS OF NITROGEN REMOVAL FROM LIQUID STEEL UNDER VACUUM |
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| FU Jie,CHANG Heming,DI Lin,ZHU Jian,CHEN Boping. STUDY ON KINETICS OF NITROGEN REMOVAL FROM LIQUID STEEL UNDER VACUUM[J]. Iron & Steel, 2000, 35(10): 24-26,47 |
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| Authors: | FU Jie CHANG Heming DI Lin ZHU Jian CHEN Boping |
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| Affiliation: | University of Science and Technology Beijing |
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| Abstract: | The kinetics of nitrogen removal from liquid steel under vacuum is studied in this paper. The following conclusions have been obtained by experiments. The nitrogen removal is controlled by the nitrogen transfer through duffusion layer in liquid steel at 67 Pa and 110 Pa, and by the chemical reaction in gas liquid interface at 2000 Pa. The reaction between carbon and oxygen under vacuum has a great effect on nitrogen removal, increasing the rate of nitrogen removal, and it is proved that the internal and external solid particles can be the nuclei of CO and N 2 bubbles, so as to increase the rate of nitrogen removal. |
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| Keywords: | vacuum nitrogen removal reaction between carbon and oxygen kinetics |
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