• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Reaction Rates and Swelling Phenomenon of Fe-C Droplets in FeO bearing Slag
【24h】

Reaction Rates and Swelling Phenomenon of Fe-C Droplets in FeO bearing Slag

机译：FeO渣中Fe-C液滴的反应速率和溶胀现象

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The reduction of FeO in slag by an iron droplet, decarburisation of the droplet and the droplet swelling phenomenon during slag-metal droplet reaction were analyzed by a kinetic model. Diffusions in the slag phase, diffusions throughout the droplet, interfacial reactions, equilibrium relations and homogeneous nucleation of gas bubbles within the droplet were incorporated in the model. During an Fe-C droplet reaction with FeO bearing slag, decarburisation rate increases with increasing FeO in slag, carbon in the droplet and the droplet size, but the rate decreases with increasing silicon in metal and ambient pressure. The decarburisation rate in unit surface area of the droplet increases with increasing the droplet size. Slow decarburisation during the initial stage of the reaction was suggested by the model, and the desiliconisation and oxygen absorption of the droplet were found to be responsible for this initial slow decarburisation. The initial slow decarburisation is pronounced when the droplet contains higher carbon and silicon, or when the reaction occurs under higher pressure and with the slag containing lower FeO. CO bubble generation within the droplet was suggested to cause the swelling of the droplet. The occurrence of swelling is promoted when the droplet contains higher carbon and lower silicon, slag contains higher FeO, or when the droplet is small, and the reaction occurs under lower pressure.
机译：通过动力学模型分析了铁滴对炉渣中FeO的还原，炉渣的脱碳，炉渣与金属液滴反应过程中的液滴溶胀现象。渣相中的扩散，整个液滴中的扩散，界面反应，平衡关系以及液滴中气泡的均匀成核被纳入模型中。在Fe-C液滴与含FeO的炉渣反应过程中，脱碳速率随炉渣中FeO的增加，液滴中的碳和液滴尺寸的增加而增加，但随着金属中硅含量和环境压力的增加，脱碳速率会降低。液滴的单位表面积的脱碳率随着液滴尺寸的增加而增加。该模型建议在反应的初始阶段进行缓慢的脱碳，并且发现液滴的脱硅和氧吸收是造成该初始缓慢脱碳的原因。当液滴中含有较高的碳和硅时，或者当反应在较高压力下且炉渣中含有较低的FeO时，则开始缓慢的脱碳。建议在液滴内产生CO气泡导致液滴膨胀。当液滴含有较高的碳和较低的硅，熔渣含有较高的FeO时，或当液滴较小时，会促进溶胀的发生，并且反应在较低的压力下发生。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号