| 钢液中气泡和夹杂物的去除 |
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| 引用本文： | 赵晶晶,程树森,陶涛.钢液中气泡和夹杂物的去除[J].北京科技大学学报,2009(Z1). |
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| 作者姓名： | 赵晶晶 程树森 陶涛 |
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| 作者单位： | 北京科技大学冶金与生态工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(No.60672145) |
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| 摘 要： | 熔池中钢液的流动、气泡以及夹杂物的大小都影响着钢液中夹杂物的去除率.研究表明,向上流动的钢液有利于夹杂物的上浮,几乎所有的夹杂物都能在钢液上升流中上浮.向下流动的钢液对夹杂物和气泡的上浮有阻碍作用,当气泡的直径小于1mm时其在钢液中将无法上浮.在钢包精炼吹氩过程中,应使用较小的吹氩量,一方面避免产生过大的气泡而降低底吹气体的利用效率,另一方面减小熔池内的钢液流速,促进气泡和夹杂物的上浮.但吹氩量也不宜过小,必须使气泡保持一定的尺寸来保证其充分上浮.在钢包精炼过程中选择吹氩量时,应综合考虑钢液流速和气泡大小的影响.
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| 关 键 词： | 洁净钢 钢包精炼 吹氩 气泡 夹杂物 |
Bubble and inclusion removal in molten steel |
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| ZHAO Jing-jing,CHENG Shu-sen,TAO TaoSchool of Metallurgical , Ecological Engineering,University of Science , Technology Beijing,Beijing ,China.Bubble and inclusion removal in molten steel[J].Journal of University of Science and Technology Beijing,2009(Z1). |
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| Authors: | ZHAO Jing-jing CHENG Shu-sen TAO TaoSchool of Metallurgical Ecological Engineering University of Science Technology Beijing Beijing China |
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| Institution: | ZHAO Jing-jing,CHENG Shu-sen,TAO TaoSchool of Metallurgical , Ecological Engineering,University of Science , Technology Beijing,Beijing 100083,China |
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| Abstract: | The inclusion removal rate in molten steel is influenced by molten steel flow and the bubble/inclusion size. As the research results shown,the upward movement of molten steel is in favor of the inclusion floatation,and almost all of the inclusions can float up. Inclusion and bubble flotation is hindered by the downward molten steel flow. Bubbles whose diameters are smaller than 1 mm can not float up when the molten steel flows downward. In the ladle refining process,small gas injection rate should be used t... |
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| Keywords: | clean steel ladle refining argon gas injection bubble inclusion |
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