Abstract：The sample was prepared by powder press method. A rapid determination method of three elements (Mo, Cu and S) in raw ore, tailings and fast flotation tailings in molybdenum beneficiation process of Lu-ming Mining by X-ray fluorescence spectrometry was established. Since there were few certified reference material for molybdenum ore, several samples with content gradient (the contents had been accurately determined by wet method) in different stages of molybdenum beneficiation process were used as calibration samples to establish the calibration curve. The samples were ground to below 0.074mm. The empirical coefficient method was employed to correct the influence among elements, eliminate the matrix effect and granularity effect, and reduce the overlapping interference of spectral lines. The detection limits of elements were in range of 3-10μg/g. The relative standard deviations (RSD) of determination results were between 0 and 5.1%. The accuracy tests were conducted with raw ore, tailings and fast flotation tailings in molybdenum beneficiation process, and the results were consistent with those obtained by wet method. The samples of raw ore, tailings and fast flotation tailings in molybdenum beneficiation process were used for long-term stability investigation. It was found that the RSDs of determination results for the three elements were between 0.18% and 7.9%.
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