Analysis of Grinding Rate Constant on a Stirred Ball Mill Using Discrete Element Method Simulation

H. Choi, H. Chung, S. Kim
Journal of the American Ceramic Society
Discrete element method, Grinding Experimental Results

The results of discrete element method simulation were compared with actual grinding experimental results. The grinding rate constant K can be expressed as K=a exp(bn), where n is the rotation speed. To investigate the correlation between K and the simulation results, a new factor, the calculated force, was defined as Fcal=average force acting on a ball coordination number. K could then be expressed as K=a′Fcal+b′ and is thus one-dimensionally proportional to FcalK was found to be correlated with the forces acting on a ball and its contact points. Experimental results confirmed that Fcal is suitable for use as a factor for expression of K.

Keywords: Discrete Element Method, Grinding Experimental Results

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