Abstract:In chemical wet analysis, titanium in titanium concentrate was easily hydrolyzed to form insoluble metatitanic acid precipitation, which brought greatly hinderance to the analysis. Meanwhile, the analysis period was long and the process was complex. The sample was prepared by pressed powder pellet. The contents of sulfur, phosphorus, manganese oxide, vanadium pentoxide, calcium oxide and magnesium oxide in titanium concentrate were simultaneously determined by energy dispersive X-ray fluorescence spectrometry. The particle size of titanium concentrate sample in experiments was 40μm. The boric acid was selected as the adhesive. The pressure for pressed powder pellet was 25MPa and the holding time was 60 seconds. The prepared sample was smooth without cracking. 4-5 certified reference materials were used to prepare the calibration curves. The matrix effect was corrected with the fundamental parameter (FP) method. The linear correlation coefficients of calibration curves for all components were not less than 0.997. The detection limits were between 0.00049% and 0.076%. The contents of sulfur, phosphorus, manganese oxide, vanadium pentoxide, calcium oxide and magnesium oxide in titanium concentrate sample were determined according to the experimental method. The relative standard deviations (RSDs, n=8) of the results were between 0.71% and 7.9%. The proposed method was applied for the determination of sulfur, phosphorus, manganese oxide, vanadium pentoxide, calcium oxide and magnesium oxide in two titanium concentrate certified reference materials, and the results were consistent with the certified values.
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