Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (4): 58 doi: 10.1007/s41365-019-0579-1

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Study on element detection and its correction in iron ore concentrate based on a prompt gamma neutron activation analysis system

Long Zhao1,2 • Xu Xu1 • Jing-Bin Lu1 • Ya-Lin Gong2 • Xiang-Lin Li3 • Wei Zhang2 • Qing-Min Shang2 • Qing-Feng Song2 • Yan-Feng Li2   

  1. 1 College of Physics, Jilin University, Changchun 130012, China
    2 Dandong Dongfang Measurement & Control Technology Co., Ltd, Dandong 118002, China
    3 Hunan First Normal University, Changsha 410205, China
  • Received:2018-05-19 Revised:2018-09-13 Accepted:2018-10-20
  • Contact: Jing-Bin Lu E-mail:ljb@jlu.edu.cn
  • Supported by:
    This work was supported by the National Key Scientific Instrument and Equipment Development Projects (No. 2012YQ240121), Liaoning science and technology project (No. 2017220010), and Changchun Science and Technology Bureau Local Company and College (University, Institution) Cooperation Projects (No. 17DY023).
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Long Zhao, Xu Xu, Jing-Bin Lu, Ya-Lin Gong, Xiang-Lin Li, Wei Zhang, Qing-Min Shang, Qing-Feng Song, Yan-Feng Li. Study on element detection and its correction in iron ore concentrate based on a prompt gamma neutron activation analysis system.Nuclear Science and Techniques, 2019, 30(4): 58     doi: 10.1007/s41365-019-0579-1
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Abstract: A prompt gamma-neutron activation analysis (PGNAA) system was developed to detect the iron content of iron ore concentrate. Because of the self-absorption effect of gamma-rays and neutrons, and the interference of chlorine in the neutron field, the linear relationship between the iron analytical coefficient and total iron content was poor, increasing the error in the quantitative analysis. To solve this problem, gamma-ray self-absorption compensation and a neutron field correction algorithm were proposed, and the experimental results have been corrected using this algorithm. The results show that the linear relationship between the iron analytical coefficient and total iron content was considerably improved after the correction. The linear correlation coefficients reached 0.99 or more.

Key words: Prompt gamma-neutron activation analysis, Self-absorption, Energy spectrum, Compensation, Correction, Iron ore concentrate