Determination of sixteen components in copper concentrate by high sensitivity monochromatic excitation energy dispersive X-ray fluorescence spectrometry
FENG Xianjin1, HAN Weidan2, TENG Fei2, LIU Xiaodong2, HU Junkai3
1. BGRIMM MTC Technology Co.,Ltd., Beijing 102628, China; 2. Beijing Ancoren Science & Technology Co., Ltd., Beijing 101102, China; 3. Daye Nonferrous Design and Research Institute Co.,Ltd.,Huangshi 435005, China
Abstract：The coverage of the components required in the technical conditions of copper concentrate ranges from main, macro, micro to trace. Therefore, it is difficult to determine these components in copper concentrate simultaneously using one instrument technology. The monochromatic excitation energy dispersive X-ray fluorescence spectrometer uses hyperboloid bent crystal confocal technique for the monochromatization of X-ray continuous spectrum, thus reducing the interference of continuum background, decreasing the limit of detection, and enhancing the sensitivity. The detection range of the components can cover the main to trace. In experiments, a method for the analysis of 16 components including main components (Cu, S, Fe, SiO2), macro-components (CaO, MgO, Al2O3), micro and trace components (Zn, Ni, Cr, Pb, Sb, Cl, Ag, As, Bi) in copper concentrate was established based on high sensitivity monochromatic excitation energy dispersive X-ray fluorescence spectrometer (HS-EDXRF) and fast fundamental parameter (FP) method. The copper concentrate samples were determined according to the experimental method. The found results were compared with those obtained by the standard methods or classical analysis methods, and there was no significant difference (All t0.05,82 values were less than 1.98). In addition, the relative standard deviations (RSD, n=7) of determination results for main components (Cu, S, Fe, SiO2), macro-components (CaO, MgO, Al2O3), micro components (Zn, Ni, Cr, Pb, Sb, Cl), and trace components (Ag, As, Bi) were not more than 0.70%, 1.6%, 3.3% and 10%, respectively. The proposed method could meet the detection requirements of 16 elements in copper concentrate in copper smelting process.
冯先进, 韩伟丹, 滕飞, 刘小东, 胡军凯. 高灵敏度单波长激发能量色散X射线荧光光谱法测定铜精矿中16种组分[J]. 冶金分析, 2022, 42(7): 1-9.
FENG Xianjin, HAN Weidan, TENG Fei, LIU Xiaodong, HU Junkai. Determination of sixteen components in copper concentrate by high sensitivity monochromatic excitation energy dispersive X-ray fluorescence spectrometry. , 2022, 42(7): 1-9.
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