Influence of nozzle outlet diameter on the atomization process of zirconia dry granulation

In order to predict the atomization characteristics of process zirconia dry granulation accurately, influence nozzle outlet diameter on is analyzed. The VOF method and RNG k-ε turbulence model are applied numerically analyze flow field pressure-swirl nozzles with different diameters granulation, effects spray cone angle, liquid film thickness, pressure distribution velocity result shows that when increased from 3 4 mm, air core atomized increased, angle 30.5° 59.7° while thickness decreased, but 5 decreased 27.6°, decreased. moisture content particles corresponding measured by design experiment platform microstructure observed, which verifies correctness numerical analysis. Taking performance into consideration, mm better suitable for granulation.