The Simulation and Analysis on Medium Motion in Ball Mill by Discrete Element Method
Abstract: Based on the discrete element method, we carry out the research of the motion of single diameter of steel balls and mixed steel balls by the simulation test. Simulation results show that the motion form of steel balls in the above two kinds of movement is basically consistent, which mainly includes cascading movement, cataracting movement and eccentric exercise. Steel balls generally generate cascading movement and move slowly, and it is difficult to form a larger impact force under the low rate of speed; With the rate of speed increasing, steel balls generate obvious cataracting movement, and drop points of steel balls are generally near the bottom of the cylinder; With the rate of speed continuing to increase, cataracting movement is more obvious, and drop points of steel balls moved up and the impact velocity of steel balls is also faster.
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