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| Analysis of Binder Content in Sandstone Type Uranium Ore Sample Preparation by Powder Tablet X-ray Fluorescence Spectrometry |
| Received:July 10, 2023 Revised:January 03, 2024 |
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| DOI：10.3969/j.issn.2095-1035.2024.04.010 |
| KeyWord:sandstone type uranium deposit; powder tablet pressing method; binder; X-ray fluorescence spectrometer |
| Author | Institution |
| Fangpengda |
中国地质调查局廊坊自然资源综合调查中心 |
| Zhanglijuan |
中国地质调查局廊坊自然资源综合调查中心 |
| Chen Peng |
中国地质调查局廊坊自然资源综合调查中心 |
| MA Junchi |
中国地质调查局廊坊自然资源综合调查中心 |
| SUN Hao |
中国地质调查局廊坊自然资源综合调查中心 |
| DENG Hua |
中国地质调查局廊坊自然资源综合调查中心 |
| JIN Shuo |
中国地质调查局廊坊自然资源综合调查中心 |
| LYU Xuefeng |
中国地质调查局廊坊自然资源综合调查中心 |
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| Abstract: |
| ABSTRACT Due to the mineralization characteristics of sandstone type uranium deposits, the cohesive force of sample powder is small, and it is sometimes difficult to form using direct compression method. The surface of the sample is often cracked, and it is easy to break when measured on the machine. The mixed compression method has strong adaptability and a high success rate in sample preparation, but a common problem is that diluting the sample with adhesive can affect the detection limit of elements and the accuracy of the results. In this paper, the proportion of binder added in the early sample preparation for the determination of sandstone type uranium ore geological samples by powder tablet pressing X-ray fluorescence spectrometry is studied. In the test, binders were added to uranium ore reference materials GBW04101 and GBW04102 in different proportions.Under scanning electron microscope, it was observed that the smoothness and density of the sample surface increased with the increase of the amount of binder. After measuring the main elements on the X-ray fluorescence spectrometer, it was found that the X-ray intensity decreased significantly when the amount of binder was greater than 0.2 G After comparing the standard values of GBW04102, the optimal ratio of binder to sample is 1:20. The sample prepared under this ratio is smooth and flat and not easy to break. It is determined by powder tablet pressing X-ray fluorescence spectrometry. The relative error of the determination results of reference materials is 0.56% ~ 6.76%, and the relative standard deviation (RSD, n = 12) is 0.013% ~ 7.68%, All of them have met the requirements of quality management specification for laboratory testing of Geology and mineral resources (DZ / T 0130-2006). This paper provides a reliable experimental reference for the analysis of geological samples of sandstone type uranium deposits by powder tablet pressing X-ray fluorescence spectrometry.
KEY WORDS: sandstone type uranium deposit; powder tablet pressing method; binder; X-ray fluorescence spectrometer |
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