A Comparative Study on the Impact Crushing Characteristics of the Material Layer Between the Leroy Tetrahedron and the Traditional Grinding Medium

GUO Hongchen; ZHOU Qiang; XIAO Qingfei; HUANG Shouxiang; LIU Xiangyang; LI Yunxiao; WANG Qingkai; LUO Zhong

doi:10.13779/j.cnki.issn1001-0076.2023.05.012

2023 Vol. 43, No. 5

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Article navigation > Conservation and Utilization of Mineral Resources > 2023 > 43(5): 107-113

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GUO Hongchen, ZHOU Qiang, XIAO Qingfei, HUANG Shouxiang, LIU Xiangyang, LI Yunxiao, WANG Qingkai, LUO Zhong. A Comparative Study on the Impact Crushing Characteristics of the Material Layer Between the Leroy Tetrahedron and the Traditional Grinding Medium[J]. Conservation and Utilization of Mineral Resources, 2023, 43(5): 107-113. doi: 10.13779/j.cnki.issn1001-0076.2023.05.012

Citation:

GUO Hongchen, ZHOU Qiang, XIAO Qingfei, HUANG Shouxiang, LIU Xiangyang, LI Yunxiao, WANG Qingkai, LUO Zhong. A Comparative Study on the Impact Crushing Characteristics of the Material Layer Between the Leroy Tetrahedron and the Traditional Grinding Medium[J]. Conservation and Utilization of Mineral Resources, 2023, 43(5): 107-113. doi: 10.13779/j.cnki.issn1001-0076.2023.05.012

A Comparative Study on the Impact Crushing Characteristics of the Material Layer Between the Leroy Tetrahedron and the Traditional Grinding Medium

1.
School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
2.
State Key Laboratory of Intelligent Optimized Manufacturing in Mining and Metallurgical, Beijing 102628, China
3.
State Key Laboratory of Mineral Processing Science and Technology, Beijing 102628, China
4.
Yuxi Mining Co., Ltd., Yuxi 653100, Yunnan, China

More Information

Corresponding author: ZHOU Qiang, zq1246051563@163.com

Received Date: 24 August 2023

Publish Date: 25 October 2023

Abstract

Abstract

Aiming at the problem of poor particle size characteristics of traditional medium grinding products, the influence of different medium shapes (sphere, Leroy tetrahedron, and cylinder) on the crushing particle size characteristics of the material layer was studied. The impact effect of different medium shapes at different heights (0.5 m, 1.0 m, 1.5 m, and 2.0 m) on the material bed was simulated by using drop weight tester. The results showed that the fitting coefficients of the equation fitted by Weibull distribution were in the range of 0.96~0.99, which proved that Weibull distribution function was reliable and feasible to describe the particle size distribution law of impact crushing of copper ore. The results showed that it was reliable and feasible to use Weibull distribution function to describe the particle size distribution law of impact crushing of copper ore; the results showed that the impact velocity had little effect on the particle size distribution of impact crushing of copper ore, and the crushing characteristic index of 2 m height (6.29 m/s) Leroy tetrahedral medium was 0.22 and 0.18 higher than that of steel ball and steel segment, respectively. Compared with steel ball and steel segment, the yields of +0.15 mm, −0.074 +0.038 mm, −0.074 mm and−0.01 mm were decreased by 3.14 and 1.85 percentage points, 5.86 and 2.26 percentage points, 0.4 and 1.41 percentage points, 4.52 and 2.64 percentage points, respectively. It was verified that the shape of Leroy tetrahedron medium can effectively improve the particle size characteristics of the material layer.
- drop weight /
- ball mill /
- grinding media /
- Leroy tetrahedral media /
- particle size characteristics

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References

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