WU Nanxing, ZHAO Zengyi, HUA Yongbin, YU Donglin, FANG Changfu, LIAO Dahai
(School of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)

Abstract: This study aimed to solve the water content inhomogeneity of the ceramic body in the dry granulation of building ceramics. First,the CFD method was used to analyze the water content distribution of the ceramic body particles in the process and a simulation model was established to improve the water content uniformity. The reliability of the simulation results was verified by the experiment. The numerical simulation showed that when the dry granulation time was 5.5min, 6min, and 6.5min, the maximum atomized water mass percentages in the granulation chamber were about 9%, 11%, and 12%, with their averages at about 6%, 8%, and 9%. The mass percentage nephogram of the atomized water had three sections, and the water content distribution of the ceramic body particles had a poor uniformity. Meanwhile, the experiment data was much the same as that of the numerical simulation, verifying the correctness of the numerical simulation model. The study provides a new method to research the water content of ceramic body particles in dry granulation process.

Key words: CFD model; dry granulation; water content; uniformity