溜槽角度对混装布料过程的影响

分析了定点布料方式下溜槽角度对混装布料规律的影响.首先对混装布料方式进行了物理实验模拟,获得了不同溜槽角度下的料流轨迹、料堆结构等重要信息,分析了不同粒度的混装物料在下落过程中存在的偏析现象.其次利用离散单元法(DEM)数学模型对布料过程进行了模拟研究,并对模拟结果进行了详细分析.结果表明:模型结果与物理实验结果吻合较好.其中模型获得的料堆结构和径向空隙度分布的信息的结果可为现场调节煤气流分布提供一定的参考依据.

Effect of Chute Angle on Process of Mixing Charging

The effect of chute angle on mixing charging law was analyzed under the fixed-point burden distribution.First,an experiment was performed under mixing charging process,and the burden trajectory and the pile structure were obtained under different chute angles.The segregation of mixing materials with different sizes during the materials descending was also analyzed.Then the charging process was simulated by distinct element method(DEM),and the mathematical simulation results were analyzed in detail.The results showed that the mathematical simulation results are in good agreement with the experimental results.And the information of the pile structure and the radial porosity profile can provide some reference to adjust the gas flow distribution.