<報文>修正 DEM による転動ボールミル内媒体の運動とエネルギー分布

概要

論文の詳細を見る
The balls' motion in a tumbling ball mill was analyzed two dimensionally by a Distinct Element Method using an extended Kelvin model composed of a nonlinear-spring and a nonlinear-dashpot. The coefficient of viscosity in the model was determined from the data of imperfect restitution between a ball and a mill shell. The dynamic motion of individual balls was simulated on the basis of the nonlinear perfect elasticity, nonlinear viscosity and Newton's law of motion. The trajectories and dynamic motion of balls during mill rotation calculated were fairly consistent with the actual motion of balls in a mill. The model simulation proposed here could be a clue to the three dimensional solution of the actual motion of balls in a tumbling ball mill. The balls' motion and kinetic energy were significantly influenced by the mill speed and ball charge fraction.grindingsimulationtumbling ball millDEMball motionkinetic energy
東北大学の論文
1994-03-30