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首页> 外文期刊>ISIJ international >Comprehensive Model of Oxygen Steelmaking Part 2: Application of Bloated Droplet Theory for Decarburization in Emulsion Zone
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Comprehensive Model of Oxygen Steelmaking Part 2: Application of Bloated Droplet Theory for Decarburization in Emulsion Zone

机译：氧气炼钢综合模型第2部分：膨胀滴理论在乳化区脱碳中的应用

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摘要

The development of a global model for oxygen steelmaking and its validation against industrial data was reported in Part 1 of this paper. This paper focused on the development of one sub-model on the decarburization reaction in the emulsion zone incorporating the bloated droplet theory. This paper also critically evaluated the current knowledge on the kinetics of decarburization reaction in the emulsion phase and discussed the repercussions of the new model for industrial practices. The decarburization model, in conjunction with the industrial data, indicates that the decarburization rates in the emulsion phase reaches up to approximately 60% of the overall decarburization rate during the main blow. It was found that the residence time of droplets as well as decarburization reaction rate via emulsified droplets was strong function of bloating behavior of metal droplets in the emulsion phase. The estimated residence times of the metal droplets in the emulsion were between 0.4 to 45 s throughout the blow. The influence of variations in droplet size and ejection angle on residence time and decarburization rates via emulsified droplets was also investigated. It was shown in this study that the decarburization rates in the emulsion were accelerated if droplet size was decreased or if the ejection angle was decreased.
机译：本文第1部分报告了氧气炼钢全球模型的开发及其针对工业数据的验证。本文着重研究了一种结合droplet肿液滴理论的乳化区脱碳反应的子模型。本文还对乳液相中脱碳反应动力学的现有知识进行了严格的评估，并讨论了新模型对工业实践的影响。脱碳模型结合工业数据表明，在一次吹炼过程中，乳液相中的脱碳率达到了总脱碳率的约60％。发现液滴的停留时间以及通过乳化液滴的脱碳反应速率是乳液相中金属液滴的气胀行为的强函数。在整个吹塑过程中，金属滴在乳液中的估计停留时间为0.4至45 s。还研究了液滴尺寸和喷射角度的变化对通过乳化液滴的停留时间和脱碳速率的影响。该研究表明，如果液滴尺寸减小或喷射角度减小，则乳液中的脱碳速率会加快。

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