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Investigation on Collision of Steel Balls in Ball Mills with Varied Filling Rates of Grinding Media
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Wenbin YUAN, Xin SUN, Kai JIN, Xiaolong WANG, Yansheng ZHANG
Mining and Metallurgical Engineering | 2023, 43(4) : 57 - 60
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Mining and Metallurgical Engineering | 2023, 43(4): 57-60
• MINERAL PROCESSING •
Investigation on Collision of Steel Balls in Ball Mills with Varied Filling Rates of Grinding Media
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Wenbin YUAN, Xin SUN, Kai JIN, Xiaolong WANG, Yansheng ZHANG
Affiliations
  • School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
Published: 2023-08-01 doi: 10.3969/j.issn.0253-6099.2023.04.012
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A commercially applied large ball mill with an effective internal diameter of 4.6 m is taken for study, and the discrete element method (DEM) was introduced to simulate and investigate the influence of filling rate of grinding media (steel balls) on the collision of particles inside the mill and energy consumption. It is found that when the filling rate of grinding media is 30% - 35%, the frequency of ball-ore collision increases gradually. However, the ratio of ore-ore collision frequency to the total collision frequency increases first and then decreases, and the energy loss for ball-ball and ball-liner collisions increases. It can be seen that increasing filling rate of grinding media may not only reduce grinding efficiency and increase energy loss, but also increase liner wear by steel ball, which is not conducive to sustainable usage of mill liner.

ball mill  /  steel ball  /  grinding media  /  filling rate  /  discrete element method (DEM)  /  energy loss  /  frequency of collision
Wenbin YUAN, Xin SUN, Kai JIN, Xiaolong WANG, Yansheng ZHANG. Investigation on Collision of Steel Balls in Ball Mills with Varied Filling Rates of Grinding Media[J]. Mining and Metallurgical Engineering, 2023 , 43 (4) : 57 -60 . DOI: 10.3969/j.issn.0253-6099.2023.04.012
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Year 2023 volume 43 Issue 4
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.04.012
  • Receive Date：2023-02-14
  • Online Date：2026-03-05
  • Published：2023-08-01
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  • Received：2023-02-14
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    School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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