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首页> 外文期刊>ISIJ international >Numerical Simulation of Particle Mixing Behavior in High Speed Shear Mixer and Cylinder Mixer
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Numerical Simulation of Particle Mixing Behavior in High Speed Shear Mixer and Cylinder Mixer

机译：高速剪切搅拌机和气缸混合器中颗粒混合行为的数值模拟

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摘要

The mixing effect of powder materials is crucial in the iron ore granulation process, which determines the composition and particle size distribution, thereby affecting the quality of the sinter. To study the mixing effect of powder particles in a high speed shear mixer (HSSM) and cylinder mixer (CM), numerical simulation based on discrete element method was adopted in this work. For the CM, the particle movement consists of slipping and slumping. For the HSSM, the particle movement consists of rolling and cascading. The particle movement intensity coefficient of the HSSM is larger than that of CM, indicating that the movement of the particles in HSSM is more intensive. For HSSM case with four blades, the variation coefficient of homogeneity increases as rotational speed increases. The number of blades has little effect on the particle movement intensity coefficient and variation coefficient of homogeneity. In comparison to the CM, the variation coefficient of the HSSM reduce the most. It means that the mixing effect of HSSM is better than the CM. These findings are helpful for the improvement of the mixing and granulation efficiency in the iron ore sintering process.
机译：粉末材料的混合效果在铁矿石造粒过程中至关重要，这决定了组合物和粒度分布，从而影响了烧结的质量。为了研究粉末颗粒在高速剪切混合器（HSSM）和圆柱混合器（CM）中的混合效果，在这项工作中采用了基于离散元件的数值模拟。对于厘米，颗粒运动包括滑动和坍塌。对于HSSM，颗粒运动包括滚动和级联。 HSSM的颗粒运动强度系数大于CM的粒度，表明粒子在HSSM中的运动更加密集。对于具有四个刀片的HSSM壳，随着转速的增加，均匀性的变化系数增加。叶片的数量对颗粒运动强度系数和变异系数影响几乎没有影响均匀性。与CM相比，HSSM的变化系数最大限度地减少。这意味着HSSM的混合效果优于CM。这些发现有助于改善铁矿石烧结过程中的混合和造粒效率。

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  • 来源
    《ISIJ international》 |2021年第7期|2059-2065|共7页
  • 作者

    Yang YOU; Jiabao GUO; Xuewei LV; Shanshan WU; Yong LI; Kai TANG; Yaowei YU;

  • 作者单位

    Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China College of materials Science and Engineering Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China;

    Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China College of materials Science and Engineering Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China;

    Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China College of materials Science and Engineering Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China;

    Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China College of materials Science and Engineering Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China;

    Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China College of materials Science and Engineering Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China;

    Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China College of materials Science and Engineering Chongqing University No. 174 Shazheng Street Shapingba District Chongqing 400044 PR China;

    State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced Ferrometallurgy School of Materials Science and Engineering Shanghai University No. 99 Shangda Road Baoshan District Shanghai 2000444 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    DEM simulation; high speed shear mixer; cylinder mixer; particle mixing efficiency; variation coefficient of homogeneity;

    机译：DEM仿真;高速剪切搅拌机;气缸混合器;颗粒混合效率;变异系数均匀性;

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