JIANG Zhuting, JIANG Yi, LI Guanbiao, XU Zhenyu, FANG Changfu, LIAO Dahai

(School of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)

Abstract: In order to investigate the mixing effect of granulation columns, the influence of granulation column numbers on the accumulation degree was analyzed by experiment and numerical simulation. The mathematical and physical models of the granulation columns were established based on CFD to simulate the change of the granulation column numbers in the mixing process. The accumulation degree that varied with the granulation column number was measured. The simulation results and experimental data showed: when the number of granulation columns were 6, the simulated accumulation volume accounted for 20-23% of the total of all particles while the tested made up 19-24%; when the number of granulation columns were 8, the simulated accumulation volume accounted for 5%-7% of the total of all particles while the tested made up 6-9%; when the number of granulation columns were 10, the simulated accumulation volume accounted for 11-14% of the total of all particles while the tested made up 13-15%; The comparison between the simulation results and the experimental data indicated that when the number of granulation columns was 8, the mixing effect was the best.

Key words: ceramic dry granulator; granulation effect; CFD method; experiment analysis; number of columns