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Optimization of Particle Shape and Gradation of Machine-Made Sand
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Xinghua PENG1, 2, 3, Guodong LI1, 2, 3, Jin ZHANG1, 2, 3, Chaohong ZHANG1, 2, 3, Dahai YOU1, 2, 3, Mingsong PEI1, 2, 3, Li ZHANG1, 2, 3
Mining and Metallurgical Engineering | 2024, 44(4) : 207 - 211
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Mining and Metallurgical Engineering | 2024, 44(4): 207-211
• MINERAL PROCESSING •
Optimization of Particle Shape and Gradation of Machine-Made Sand
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Xinghua PENG1, 2, 3, Guodong LI1, 2, 3, Jin ZHANG1, 2, 3, Chaohong ZHANG1, 2, 3, Dahai YOU1, 2, 3, Mingsong PEI1, 2, 3, Li ZHANG1, 2, 3
Affiliations
  • 1.Hubei Institute of Metallurgical Geology (Central South Institute of Metallurgical Geology), Yichang 443000, Hubei, China
  • 2.Hubei Provincial Research Center of Mineral Materials and Applied Engineering Technologies, Yichang 443000, Hubei, China
  • 3.Yichang Key Laboratory of Comprehensive Utilization of Mineral Resources, Yichang 443000, Hubei, China
Published: 2024-08-01 doi: 10.3969/j.issn.0253-6099.2024.04.040
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In order to optimize the particle shape and gradation of machine-made sand, a vertical bar stirring mill was adopted for shaping tests. The effects of medium type, medium ratio, mill rotation speed and material/ball ratio on the particle shape of machine-made sand were investigated. The gradation and shape characteristics of unshaped and shaped sands were comparatively analyzed by using optical microscopy and image processing software. The results show that the shaping effect of zirconia medium is better than that of steel or alumina medium. With the zirconia balls with diameter of 6 mm and 8 mm in a mass ratio of 1∶1, rotation speed of 300 r/min, feed/ball mass ratio of 1∶3 and pulp volume fraction of 62.5%, the milling process results in the shaped sand with fineness of+0.15 mm 84.98% and flake granule accounting for 4.5%. The shaped machine-made sand has better compactness and angular characteristics, and it is qualified as the type I sand according to the standard GB/T 14684—2022, with better gradation and particle shape compared to the unshaped sand. The contour shape and angular characteristics of coarse granules can be greatly optimized than those of fine particles. It is concluded that under suitable conditions, a vertical bar stirring mill can obviously improve the shape of machine-made sand and optimize coarser grain composition.

machine-made sand  /  particle shape  /  gradation  /  vertical bar stirring mill  /  shaping
Xinghua PENG, Guodong LI, Jin ZHANG, Chaohong ZHANG, Dahai YOU, Mingsong PEI, Li ZHANG. Optimization of Particle Shape and Gradation of Machine-Made Sand[J]. Mining and Metallurgical Engineering, 2024 , 44 (4) : 207 -211 . DOI: 10.3969/j.issn.0253-6099.2024.04.040
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Year 2024 volume 44 Issue 4
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doi: 10.3969/j.issn.0253-6099.2024.04.040
  • Receive Date：2024-02-20
  • Online Date：2026-03-18
  • Published：2024-08-01
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  • Received：2024-02-20
Affiliations
    1.Hubei Institute of Metallurgical Geology (Central South Institute of Metallurgical Geology), Yichang 443000, Hubei, China
    2.Hubei Provincial Research Center of Mineral Materials and Applied Engineering Technologies, Yichang 443000, Hubei, China
    3.Yichang Key Laboratory of Comprehensive Utilization of Mineral Resources, Yichang 443000, Hubei, 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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