Effects of amplitude on grinding efficiency of flutter ball will

LIU Wuhui, SHAN Jihong, QUE Zijun

(Key Laboratory of E&M, Ministry of Education & Zhejiang Province,
 Zhejiang University of Technology, Hangzhou 310032,China)

Abstract: Aiming at the problem that the grinding ability of flutter ball mill was enhanced via coupling movement , the movement of medium under different amplitude in the shell was simulated via EDEM, the impact energy distribution of medium in the ball mill under different amplitude was obtained, and the comparison of grinding capacity of the ball mill under different amplitude was given based on it. then, the amplitude of the flutter ball mill can be changed via adjusting the angle between eccentric blocks in vibratory motor ,and the results of simulation and analysis was verified by the investigation of grinding experiments under different amplitude .The results of simulation and grinding experiment indicate that: the impact energy distribution of the medium in the shell of the flutter ball mill can be changed via adjusting the amplitude. Using large amplitude is in favor of crushing larger particles, and using small amplitude is in favor of crushing smaller particles. During the grinding process, selecting the appropriate amplitude to adapt to the change in particle size of material is an effective way to improve the grinding efficiency.

Key words: amplitude; grinding medium; grinding efficiency