Modification and Industrial Application of Liners of Semi−autogenous Grinding Mill Based on Orthogonal Design and Discrete Element Method

XIAO Qingfei; SHAO Yunfeng; ZHOU Qiang; LIU Xiangyang; WANG Qingkai; ZHANG Qian

doi:10.13779/j.cnki.issn1001-0076.2023.04.005

2023 Vol. 43, No. 4

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Article navigation > Conservation and Utilization of Mineral Resources > 2023 > 43(4): 50-59

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XIAO Qingfei, SHAO Yunfeng, ZHOU Qiang, LIU Xiangyang, WANG Qingkai, ZHANG Qian. Modification and Industrial Application of Liners of Semi−autogenous Grinding Mill Based on Orthogonal Design and Discrete Element Method[J]. Conservation and Utilization of Mineral Resources, 2023, 43(4): 50-59. doi: 10.13779/j.cnki.issn1001-0076.2023.04.005

Citation:

XIAO Qingfei, SHAO Yunfeng, ZHOU Qiang, LIU Xiangyang, WANG Qingkai, ZHANG Qian. Modification and Industrial Application of Liners of Semi−autogenous Grinding Mill Based on Orthogonal Design and Discrete Element Method[J]. Conservation and Utilization of Mineral Resources, 2023, 43(4): 50-59. doi: 10.13779/j.cnki.issn1001-0076.2023.04.005

Modification and Industrial Application of Liners of Semi−autogenous Grinding Mill Based on Orthogonal Design and Discrete Element Method

1.
Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
2.
State Key Laboratory of Process Automation in Mining & Metallurgy, Beijing 100083, China
3.
Beijing Key Laboratory of Process Automation in Mining & Metallurgy, Beijing 100083, China
4.
State Key Laboratory of Mineral Processing, Beijing 100083, China
5.
State Key Laboratory of Clean Utilization of Complex Nonferrous Metal Resources, jointly established by the Ministry and the Province, Kunming 650093, China

More Information

Corresponding author: ZHOU Qiang, zq1246051563@163.com

Received Date: 18 May 2023

Publish Date: 25 August 2023

Abstract

Abstract

In order to solve the problem that the liners of Φ5.5 m×1.8 m SAG mill were easy to wear and fracture in a concentrator in Xinjiang. Firstly, the optimum structural parameters of cylinder liners were determined by the orthogonal test. Secondly, The discrete element method (DEM) was used to simulate the real operation of SAG mills. Based on the different structural parameters of cylinder liners (height, width and angle of lifter bars), the motion of particles and the change of collision energy in SAG mills were studied. Finally, the feasibility of the optimization scheme was verified by industrial tests. The results showed that a suitable parameters of the liners can effectively optimize the motion of particles in the mill, increase the effective collision of ball to ore and ore to ore, reduce the wear of liners or grinding media caused by invalid collision, and thus improve the operating parameters of the semi-autogenous mill. The optimum parameters of the lifter bars were determined by orthogonal experiment to be 190 mm in height, 140 mm in width and 60 ° in angle. The optimum parameters of liners were used to carry out industrial tests. The results showed that the optimized liner service life, mill operation rate and efficiency were increased by 51 days, 16.36% and 15.55 t/h, and the mill power consumption decreased by 6.07 kW·h/t. The results verified the reliability and superiority of the discrete element method and the orthogonal design method in the modification of the cylinder liners.
- semi−autogenous grinding /
- liner modification /
- orthogonal design /
- discrete element method

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References

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