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