Yang Kang, Rui Wu, Peizheng Li, Qingpei Li, Sen Wu, Tingting Tan, Yingrui Li, Gangqiang Zha
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引用次数: 0
Abstract
Background: The gangue content in coal seriously affects the calorific value produced by its combustion. In practical applications, gangue in coal needs to be completely separated. The pseudo-dual-energy X-ray method does not have high sorting accuracy.
Objective: This study aims to propose a novel multi-dimensional coal and gangue X-ray sorting algorithm based on CdZnTe photon counting detectors to solve the problem of coal and gangue sorting by X-ray.
Methods: This complete algorithm includes five steps: (1) Preferred energy bins, (2) transmittance sorting, (3) one-dimensional R-value sorting, (4) two-dimensional R-value sorting, and (5) three-dimensional R-value sorting. The output range of each step is determined by prior information from 65 groups of coal and gangue. An additional 110 groups of coal and gangue are employed experimentally to validate the algorithm's accuracy.
Results: Compared with the 60% sorting accuracy of the Pseudo-dual-energy method, the new algorithm reached a sorting accuracy of 99%.
Conclusions: Study results demonstrate the superiority of this novel algorithm and its feasibility in practical applications. This novel algorithm can guide other two-substance X-ray sorting applications based on photon counting detectors.
背景：煤炭中的矸石含量严重影响其燃烧产生的热值。在实际应用中，煤中的矸石需要完全分离。伪双能 X 射线法的分选精度不高：本研究旨在提出一种基于 CdZnTe 光子计数探测器的新型多维煤和矸石 X 射线分选算法，以解决用 X 射线分选煤和矸石的问题：该完整算法包括五个步骤：方法：该完整算法包括五个步骤：(1) 优选能量仓；(2) 透射率分选；(3) 一维 R 值分选；(4) 二维 R 值分选；(5) 三维 R 值分选。每个步骤的输出范围由 65 组煤炭和矸石的先验信息决定。为了验证该算法的准确性，还对另外 110 组煤炭和矸石进行了实验：结果：与伪双能法 60% 的分选精度相比，新算法的分选精度达到了 99%：研究结果证明了这种新算法的优越性及其在实际应用中的可行性。这种新算法可以指导其他基于光子计数探测器的双物质 X 射线分拣应用。
期刊介绍：
Research areas within the scope of the journal include:
Interaction of x-rays with matter: x-ray phenomena, biological effects of radiation, radiation safety and optical constants
X-ray sources: x-rays from synchrotrons, x-ray lasers, plasmas, and other sources, conventional or unconventional
Optical elements: grazing incidence optics, multilayer mirrors, zone plates, gratings, other diffraction optics
Optical instruments: interferometers, spectrometers, microscopes, telescopes, microprobes
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