A 1:10.3 water model was constructed by geometrically scaling down an industrial bottom-blown furnace (BBF) used in the Shuikoushan (SKS) lead reduction process. An innovative method was devised, which combines a chemical decolorization technique with an image analysis method rooted in the RGB colour model, to visualize the mixing characteristics of gas–liquid two-phase flow and quantitatively assess fluid mixing time. The effects of various process parameters (the level height , gas flow rate , feeding port , vertical angle of the lance , and deflection angle of the lance relative to the wall normal ) on the mixing time were studied via dimensional analysis. Furthermore, a mathematical correlation was developed for as a function of ’, / (aspect ratio), /, , and . Research findings can serve as a reference for the efficient smelting and optimal design of the SKS lead reduction process in a BBF.

中文翻译：

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底吹炉SKS铅还原工艺气液两相流混合行为的水模型研究


通过按几何比例缩小水口山 (SKS) 铅还原工艺中使用的工业底吹炉 (BBF) 构建了 1:10.3 水模型。设计了一种创新方法，将化学脱色技术与基于RGB颜色模型的图像分析方法相结合，可视化气液两相流的混合特性并定量评估流体混合时间。通过量纲分析研究了各种工艺参数（液面高度、气体流量、进料口、喷枪的垂直角度以及喷枪相对于壁法线的偏转角度）对混合时间的影响。此外，还开发了作为 '、/（纵横比）、/、 和 的函数的数学相关性。研究结果可为BBF中SKS铅还原工艺的高效冶炼和优化设计提供参考。