Design of trapezoidal liner of ball mill based on bonding theory
CHU Liang, DONG Weimin, GONG Meng
Institute of Mechanical and Electrical Equipment Integrated Development, Faculty of Mechanical & Electrical Engineering, Kunming University of Science & Technology, Kunming 650500, China
Abstract For the ball mill for grinding, the lifting bars with the same height (numbered 20-20) and 3 kinds of lifting bars with different heights (numbered 20-18, 20-16, and 20-14) were designed. A four-dimensional modeling software Solid Edge was used to model those different types of ball mill lifting bars, and then the model was imported into EDEM to calculate the number of fractures of the BPM bond in the ore model and the cumulative energy received by the lifting bar and the cylinder, to study the effect of liner design on ball mill grinding efficiency and the wear of ball mill. The results show that compared with the model equipped with contour lifting bars (20-20), the number of BPM bond fractures of the ore model in the models equipped with high-and-low lifting bars(20-18, 20-16, 20-14) is higher, that is, the grinding efficiency is higher. Among them, the number of BPM bond breaks of the ore in the model 20-14 is increased by 11.3%, and the crushing effect is the best. Compared with the model 20-20, the cumulative energy of the lift bar and the cylinder of the model 20-18 and the model 20-14 are reduced by 18.6% and 28.1%, respectively, and the wear of the lift bar and the cylinder is reduced. However, the cumulative energy of the model 20-16 and the wear of the ball mill increase.
CHU Liang,DONG Weimin,GONG Meng. Design of trapezoidal liner of ball mill based on bonding theory[J]. Materials Science and Engineering of Powder Metallurgy, 2020, 25(1): 86-90.
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2020, Vol. 25 
