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Research on Copper Ore Sorting Using Dual-Energy X-Ray Technique Based on Curve Fitting of T-value by Segmented Straight Lines
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Jiangshan YU1, 2, Jianfeng HE1, 2, Wensong ZHU1, 2, Weidong LI1, 2, Shan WANG3, Xueyuan WANG1, 2, Guoyun ZHONG1, 2, Jinhui QU1
Mining and Metallurgical Engineering | 2024, 44(5) : 66 - 69
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Mining and Metallurgical Engineering | 2024, 44(5): 66-69
• MINERAL PROCESSING •
Research on Copper Ore Sorting Using Dual-Energy X-Ray Technique Based on Curve Fitting of T-value by Segmented Straight Lines
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Jiangshan YU1, 2, Jianfeng HE1, 2, Wensong ZHU1, 2, Weidong LI1, 2, Shan WANG3, Xueyuan WANG1, 2, Guoyun ZHONG1, 2, Jinhui QU1
Affiliations
  • 1.Jiangxi Engineering Technology Research Center of Nuclear Geoscience Data Science and System, East China University of Technology, Nanchang 330013, Jiangxi, China
  • 2.School of Information Engineering, East China University of Technology, Nanchang 330013, Jiangxi, China
  • 3.Ganzhou Good Friend Technology Co., Ltd., Ganzhou 341000, Jiangxi, China
Published: 2024-10-01 doi: 10.3969/j.issn.0253-6099.2024.05.013
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Copper ore sorting by dual-energy X-ray technique basded on traditional algorithms by curve fitting of T-value always results in great deviation. In view of this problem, a curve fitting of T-value by segmented straight lines was proposed. This method divides thickness into several segments, and performs a T-value curve fitting in each segment for copper ore sorting, which can more accurately reflect the changing trend of T-value with different thicknesses and also reduce impact of thickness on sorting. High-energy and low-energy rays are adopted to fit the T-value curve, and then the residual between the T-value and the curve-fitting mapping value is calculated in each segment, showing different residuals for different substances, which can be used to achieve copper ore sorting. In a verification experiment, two types of copper ores with different grades were sorted by this method. The ore images fitted with T-value curves by segmented straight lines were put into ResNet18 neural network for training, and the trained model was then used for testing. The test results show that an accuracy rate can reach 88.67%.

copper ore  /  dual-energy X-ray  /  T-value curve  /  X-ray sorting  /  segment division  /  residual
Jiangshan YU, Jianfeng HE, Wensong ZHU, Weidong LI, Shan WANG, Xueyuan WANG, Guoyun ZHONG, Jinhui QU. Research on Copper Ore Sorting Using Dual-Energy X-Ray Technique Based on Curve Fitting of T-value by Segmented Straight Lines[J]. Mining and Metallurgical Engineering, 2024 , 44 (5) : 66 -69 . DOI: 10.3969/j.issn.0253-6099.2024.05.013
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doi: 10.3969/j.issn.0253-6099.2024.05.013
  • Receive Date：2024-04-12
  • Online Date：2026-03-17
  • Published：2024-10-01
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  • Received：2024-04-12
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Affiliations
    1.Jiangxi Engineering Technology Research Center of Nuclear Geoscience Data Science and System, East China University of Technology, Nanchang 330013, Jiangxi, China
    2.School of Information Engineering, East China University of Technology, Nanchang 330013, Jiangxi, China
    3.Ganzhou Good Friend Technology Co., Ltd., Ganzhou 341000, Jiangxi, 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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