Research On Charge Collision Energy And Crushing Performance Of Flutter Ball Mill

The research mechanism of traditional ball mill can’t complete breakthrough results which improve the crushing efficiency, so seeking new motion mode of barrel become a better breakthrough point. Flutter test ball mill which is studied can enhances the effect of impact and abrasive and extends powder grinding work time in unit cycle through the multiple coupled motion of barrel in paper.Firstly, the material layer impact crushing experiment is improved and is proved rationally based on the theoretical research of the flutter ball mill medium impact crushing principle and particle crushing mechanism in this paper. Then through the theoretical research of the optimum charge collision energy range and crushing rate, the feasibility of studying the ball mill crushing performance is demonstrated by the optimum collision energy (normal) range which is achieved through falling ball crushing experiment and energy dissipation rate curve which is achieved by discrete element method. The experimental device of material layer impact and collision is designed and made. And the optimum charge collision energy range can be analytically obtain by doing the experiment of falling ball impacting experiment for a particular granularity building sand. Finally, taking the (p600x900mm test ball mill as the prototype, flutter ball mill discrete element method model is established. All of the collision energy of the collision is got by the charge motion simulation under the different vibration amplitude and vibration frequency.The statistical analysis results shows that the bigger vibration amplitude, the larger normal collision energy. This is to say, the more suitable for crushing the material of big best charge collision energy. Vibration frequency has relatively small effect on crushing performance, and the collision energy scarce changes when frequency is more than1OHz. The optimal vibration parameters of crushing the material whose optimum charge collision energy range is between0.01-0.1J can be achieved.This research has a certain reference value to explore the crushing mechanism of flutter ball mill under different motion drive, and provides a new method to select the vibration parameters.