摘要
针对颤振球磨机通过运动耦合增强粉磨能力的问题,基于EDEM仿真分析了不同振幅下筒体内介质运动形态,获得了不同振幅下磨机内介质碰撞能量分布,据此得出了各振幅下磨机粉磨能力的对比,然后通过调整振动电机内偏心块夹角改变了颤振球磨机的振幅,进行了不同振幅下的粉磨实验,验证了仿真分析得到的结果。仿真与粉磨实验研究结果表明:通过调整振幅可以改变磨机筒体内研磨介质的碰撞能量分布,采用大振幅有利于粉碎较粗物料,采用小振幅有利于粉碎较细物料,在粉磨过程中调整振幅以适应物料粒度的不断变化是提高磨机粉磨效率的有效途径。
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.
出处
《机电工程》
CAS
2016年第7期857-861,共5页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51275474)
浙江省自然科学基金资助项目(LZ12E05002)
关键词
振幅
研磨介质
粉磨效率
amplitude
grinding medium
grinding efficiency
