摘要：基于铰刀厚度对陶瓷干法造粒混料过程的影响, 采用计算流体动力学方法建立干法造粒混料过程欧拉-欧拉双流体模型, 数值模拟分析混料过程粉体颗粒的体积分布、合成速度大小和运动轨迹, 同时实验分析验证数值模拟的正确性。结果表明:当铰刀厚度分别为16、14、12、10、8 mm时, 有效颗粒占比依次为82%、84%、90%、83%、81%;铰刀厚度对陶瓷干法造粒混料过程具有一定的影响, 厚度为12 mm时, 混料过程粉体堆积现象不明显, 速度相对较均匀, 分散性及流动性较好, 有效颗粒占比最大, 造粒效果最佳。

关键词：干法造粒;铰刀厚度;混料过程;数值分析;计算流动体力学

Abstract：Based on the effect of reamer thickness on the dry granulation process of ceramic, the Euler-Eulerian two-fluid model was established by CFD method. The volume distribution, resultant velocity and trajectory of particles in the mixing process were analyzed by numerical simulation, and the correctness of numerical simulation was verified by experimental analysis. The results show that when the thickness of the reamer are 16, 14, 12, 10 and 8 mm, the effective particle ratio are 82%, 84%, 90%, 83% and 81% respectively. The thickness of reamer has certain influence on the mixing process of ceramic dry granulation, when the thickness is 12 mm, the powder accumulation phenomenon is not obvious in the mixing process, the velocity is relatively uniform, the dispersion and flowability are better, the effective particle ratio is the biggest, and the granulation effect is the best.

Keyword：dry granulation; reamer thickness; mixing process;numerical analysis；computational fluid dynamics