关键词: 干法造粒制粉;欧拉-欧拉双流体模型;分散性;团聚现象

Abstract: In order to study the relationship between the granule formation and the content of atomized liquid in dry granulation process.Based on Eulerian-Eulerian two-fluid model to simulated the mixing process of blank particles and atomized liquid in dry granulation process.The fluidity index, particle gradation and roughness of the blank particles were analyzed in experiment.Verified the correctness of numerical simulation results.Simulation results express when the atomized liquid content is 100 mL, 200 mL and 300 mL, there is no significant difference in the particles' dispersion in granulation chamber, agglomerate phenomenon is not obvious.When the atomized liquid content is 400 mL, 500 mL, there has significant difference in the particles' dispersion in granulation chamber.Agglomerate phenomenon is obvious.Experimental results show when the atomized liquid content is 100 mL, 200 mL, 300 mL, 400 mL and 500 mL.The fluidity index of the billet particles is 63.5;, 83.0;, 90.0;, 77.0;, 61.0;.Percentage of effective particles is 72;, 83;, 90;, 82;, 65;.Average roughness coefficient is 1.38, 1.43, 1.26, 1.49, 1.57.Comprehensive analysis show the result of numerical simulation is agreement with the experiment, when the atomized liquid content is 300 mL in granulation process, the particles' dispersion in granulation chamber is good and there has no agglomeration.The fluidity of particles is optimal, particle gradation is the most uniform, roughness is the optimal.Which means granulation effect is the best.

Key words: In order to study the relationship between the granule formation and the content of atomized liquid in dry granulation process.Based on Eulerian-Eulerian two-fluid model to simulated the mixing process of blank particles and atomized liquid in dry granulation process.The fluidity index, particle gradation and roughness of the blank particles were analyzed in experiment.Verified the correctness of numerical simulation results.Simulation results express when the atomized liquid content is 100 mL, 200 mL and 300 mL, there is no significant difference in the particles' dispersion in granulation chamber, agglomerate phenomenon is not obvious.When the atomized liquid content is 400 mL, 500 mL, there has significant difference in the particles' dispersion in granulation chamber.Agglomerate phenomenon is obvious.Experimental results show when the atomized liquid content is 100 mL, 200 mL, 300 mL, 400 mL and 500 mL.The fluidity index of the billet particles is 63.5;, 83.0;, 90.0;, 77.0;, 61.0;.Percentage of effective particles is 72;, 83;, 90;, 82;, 65;.Average roughness coefficient is 1.38, 1.43, 1.26, 1.49, 1.57.Comprehensive analysis show the result of numerical simulation is agreement with the experiment, when the atomized liquid content is 300 mL in granulation process, the particles' dispersion in granulation chamber is good and there has no agglomeration.The fluidity of particles is optimal, particle gradation is the most uniform, roughness is the optimal.Which means granulation effect is the best.