Abstract The effect of sectional internals on the solid bed cross section in rotary drums is investigated with a novel, fully optical accessible rotary drum apparatus for different internal configurations. The impact on mixing behavior is analyzed for different section numbers and filling degrees as well as material configurations. The mixing kinetics is affected positively by the sections, particularly for lower rotational speeds and filling degrees. The goodness of mixing in segregating particulate systems can be improved by sectional internals. Additionally to mixing effects, the impact of sectional internals on phase interfaces of the cross section is analyzed. A mathematical model description of the solid bed cross section is created and validated with the experimental data. The gas/solid interface is increasing logarithmically compared to the bare drum. The solid/inner wall interface is increasing linearly with the number of sections and the solid/outer wall interface is not affected significantly by sectional internals.

中文翻译：

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具有截面内件的转鼓中的截面现象

摘要 使用一种用于不同内部配置的新型、完全光学可访问的旋转滚筒装置，研究了截面内部构件对旋转滚筒中固体床横截面的影响。分析了不同截面数和填充度以及材料配置对混合行为的影响。混合动力学受到截面的积极影响，特别是对于较低的旋转速度和填充度。分离颗粒系统中的混合性能可以通过分段内件来提高。除了混合效应外，还分析了截面内部构件对截面相界面的影响。创建了固体床横截面的数学模型描述，并使用实验数据进行了验证。与裸鼓相比，气/固界面呈对数增加。实体/内壁界面随截面数量线性增加，实体/外壁界面不受截面内部结构的显着影响。