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<p>PGNAA online analyzers are extensively used in the proportioning processes of cement raw meals. In this study, we optimized and improved a device with a built-in structure developed in our previous work for the measurement of cement raw meal samples. Based on the original design, we incorporated an internal moderator and an external reflector to enhance the average thermal neutron flux within the sample. The optimized device was utilized to measure cement raw meal samples, and the results were compared to those obtained from cross-belt structural measurements. The energy spectra obtained were analyzed using the weighted library least squares (WLLS) method with leave-one-out cross-validation. The Mean Absolute Percentage Error (MAPE) and Relative Standard Deviation (RSD) values for the analytical results of key elements such as Ca, Si, Al, and Fe demonstrated significant improvements. These results indicate that the built-in structure substantially enhanced the measurement performance of cement raw materials.</p>

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Determining the elemental composition of cement raw materials using a new PGNAA device with a built-in structure

  • 期刊论文

  • 发表日期：

    2026年1月2日

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  • Pingkun Cai,
  • Jiatong Li,
  • Daqian Hei,
  • Wenbao Jia,
  • Dehui Zhang,
  • Lian Chen,
  • Can Cheng

摘要

PGNAA online analyzers are extensively used in the proportioning processes of cement raw meals. In this study, we optimized and improved a device with a built-in structure developed in our previous work for the measurement of cement raw meal samples. Based on the original design, we incorporated an internal moderator and an external reflector to enhance the average thermal neutron flux within the sample. The optimized device was utilized to measure cement raw meal samples, and the results were compared to those obtained from cross-belt structural measurements. The energy spectra obtained were analyzed using the weighted library least squares (WLLS) method with leave-one-out cross-validation. The Mean Absolute Percentage Error (MAPE) and Relative Standard Deviation (RSD) values for the analytical results of key elements such as Ca, Si, Al, and Fe demonstrated significant improvements. These results indicate that the built-in structure substantially enhanced the measurement performance of cement raw materials.