| CO气氛下CaO对铁晶须生长影响的原位观察和机理研究 |
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| 引用本文： | 赵志龙,唐惠庆,郭占成. CO气氛下CaO对铁晶须生长影响的原位观察和机理研究[J]. 北京科技大学学报, 2011, 0(7): 817-822 |
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| 作者姓名： | 赵志龙 唐惠庆 郭占成 |
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| 作者单位： | 北京科技大学高效钢铁冶金国家重点实验室; |
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| 基金项目： | 国家自然科学基金委员会与上海宝钢集团公司联合基金重点资助项目(No.50834007) |
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| 摘 要： | 利用光学体视显微镜和高温热台对CO气体还原Fe2O3过程进行原位观察,并结合扫描电镜、能谱和红外光谱分析,研究掺入CaO对还原过程中铁晶须生成和生长机理的影响.实验结果表明:铁晶须是在实现FeO→Fe转变时形成和不断生长的;CaO对氧化铁的还原有抑制作用,当掺入CaO质量分数≥8%时,没有铁晶须生成和生长.因此,可以通过控制CaO掺入量的方式抑制铁晶须的生成和生长,进而减少矿粉颗粒团聚的发生.
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| 关 键 词： | 炼铁 铁晶须 原位观察 气体还原 团聚 |
In situ observation and mechanism research of the influence of CaO on the growth of iron whiskers under CO atmosphere |
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| ZHAO Zhi-long,TANG Hui-qing,GUO Zhan-cheng State Key Laboratory of Advanced Metallurgy,University of Science , Technology Beijing,Beijing ,China. In situ observation and mechanism research of the influence of CaO on the growth of iron whiskers under CO atmosphere[J]. Journal of University of Science and Technology Beijing, 2011, 0(7): 817-822 |
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| Authors: | ZHAO Zhi-long TANG Hui-qing GUO Zhan-cheng State Key Laboratory of Advanced Metallurgy University of Science Technology Beijing Beijing China |
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| Affiliation: | ZHAO Zhi-long,TANG Hui-qing,GUO Zhan-cheng State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China |
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| Abstract: | The influences of CaO on the formation and growth of iron whiskers and their mechanism in the reduction of iron oxide under CO atmosphere were studied.In situ observations on the development of iron whiskers were carried out using a stereo optical microscope and a hot stage under CO atmosphere.The reduced samples were analyzed by scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS) and Fourier transform infrared spectroscopy(FTIR).It is indicated that the formation and growth of iron whiske... |
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| Keywords: | ironmaking iron whiskers in situ observation gas reduction agglomeration |
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