陶瓷墙地砖干法制粉造粒立柱与颗粒均匀度的影响

发布时间：2018-05-05 08:30

本文选题：陶瓷墙地砖 + 干法制粉　；参考：《硅酸盐通报》2017年11期

【摘要】：针对陶瓷墙地砖干法制粉造粒立柱对颗粒均匀度的影响。基于不同的造粒立柱几何参数,采用干法制粉制备颗粒,分析造粒立柱对颗粒均匀度的影响;同时基于CFD方法构建陶瓷墙地砖干法制粉混料过程欧拉-欧拉双流体模型,数值模拟验证实验的正确性。实验检测表明:当造粒立柱几何参数依次为6 mm、7 mm、8 mm、9 mm、10 mm时,对应制备颗粒最大均匀度为4.81、4.97、5.23、5.17、4.99,颗粒平均均匀度为4.71、4.85、4.98、4.87、4.83。数值模拟表明:当造粒立柱几何参数依次为6 mm、7 mm、8 mm时,粉体的分散性逐渐变好,团聚现象逐渐消失;当造粒立柱几何参数依次为9 mm、10 mm时,粉体的分散性逐渐变差,团聚现象逐渐明显。综合分析说明:造粒立柱几何参数为8 mm时,颗粒均匀度最大,粉体分散性最好,团聚现象不明显,且实验检测与数值模拟基本相吻合。
[Abstract]:The effect of dry powder granulation column on grain evenness of ceramic wall and floor tile is discussed. Based on different geometric parameters of granulation column, the effect of granulation column on particle evenness was analyzed by dry powder preparation, and Euler-Euler two-fluid model was constructed based on CFD method in dry powder mixing process of ceramic wall and floor tile. Numerical simulation verifies the correctness of the experiment. The experimental results show that when the geometric parameters of the granulation column are 6 mm / 7 mm / 8 mm / 9 mm / 10 mm in turn, the maximum homogeneity of the corresponding prepared particles is 4.81 ~ 4.97 ~ 5.23 ~ 5.174.99, and the average particle uniformity is 4.71 ~ 4.855 ~ 4.985 ~ 4.84.83. The numerical simulation results show that when the geometric parameters of the granulating column are 6 mm / 7 mm / 8 mm, the dispersity of the powder becomes better and the agglomeration gradually disappears, and when the geometric parameter of the granulating column is 9 mm ~ 10 mm in turn, the dispersity of the powder becomes worse. The phenomenon of reunion gradually became apparent. The comprehensive analysis shows that when the geometric parameter of granulating column is 8 mm, the particle uniformity is the largest, the dispersion of powder is the best, the agglomeration is not obvious, and the experimental results are in good agreement with the numerical simulation.
【作者单位】：景德镇陶瓷大学机械电子工程学院;
【基金】：国家自然科学基金(51365018) 江西省高等学校科技落地计划(KJLD14074) 江西省科技支撑计划(20151BBE50041)
【分类号】：TQ174.76

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