The Kanbara reactor (KR) process is a mechanical stirring method that reacts hot metal with desulfurization flux; it is a widely implemented desulfurization method in contemporary steel production. This study aimed to develop a new impeller profile for improving the desulfurization efficiency of the KR process. We implemented operational data analysis, a computational fluid dynamics simulation based on the operational data and performed testing and analysis with impeller models on-site a production facility. Operational data from the production facility was gathered over a 3-year period. Seven impeller models with varying impeller blade width (top and bottom), height, inclination, and curvature (curved, straight, and combination) were simulated. The results were analyzed to determine the optimal conditions. A new impeller design was selected for on-site operational testing to investigate the in situ desulfurization efficiency over 350 charges, and the results corroborated the predictions by the numerical simulations. It is expected that the proposed process modification can be successfully used for improving industrial desulfurization efficiency.

Graphic Abstract

中文翻译：

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Kanbara反应器过程传递现象的数值模拟分析提高脱硫效率

Kanbara反应器（KR）工艺是铁水与脱硫熔剂反应的机械搅拌方法；它是当代钢铁生产中广泛采用的脱硫方法。本研究旨在开发一种新的叶轮轮廓，以提高 KR 工艺的脱硫效率。我们实施了运行数据分析，即基于运行数据的计算流体动力学模拟，并在生产设施现场使用叶轮模型进行了测试和分析。来自生产设施的运营数据是在 3 年期间收集的。模拟了具有不同叶轮叶片宽度（顶部和底部）、高度、倾角和曲率（弯曲、直线和组合）的七个叶轮模型。分析结果以确定最佳条件。选择了一种新的叶轮设计进行现场运行测试，以研究超过 350 次装料的原位脱硫效率，结果证实了数值模拟的预测。预计所提出的工艺改进可成功用于提高工业脱硫效率。

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