Abstract：The acid-soluble titanium slag is a high-quality raw material for the production of titanium dioxide. The content of major and minor components in acid-soluble titanium slag will directly affect the quality of subsequent titanium dioxide products. According to the characteristic that the acid-soluble titanium slag contained low-valence substances, the sample was prepared by pressed powder pellet for the analysis by X-ray fluorescence spectrometry (XRF). The preparation method of fusion glass pellet was also established as below: Li2B4O7 and Li2CO3 were selected as the flux, and NH4NO3 was selected as the oxidizer; the acid-soluble titanium slag was pre-oxidized in porcelain crucible with graphite on the bottom; then the melt pellet was transferred into platinum-gold crucible, solving the corrosion problems by low-valence substances in sample. In experiments, the theoretical α coefficient method was used to correct matrix effect and spectral overlapping interference. The melting conditions of sample and determination conditions of testing elements were optimized. The calibration curves were plotted using the standard samples of rutile, titanium slag and titanium concentrate as well as some artificially synthesized samples. The method for the simultaneous determination of major and minor components in acid-soluble titanium slag (including TiO2, SiO2, Al2O3, MnO, CaO, MgO, TFe, V2O5 and ZrO2) by X-ray fluorescence spectrometry (XRF) was established. The experimental method was applied for the analysis of actual sample of acid-soluble titanium slag. The relative standard deviations (RSD, n=11) of found results were all less than 1.5%. The contents of major and minor components in acid-soluble titanium slag were determined according to the experimental method, and the analytical results were consistent with those obtained by the wet chemical method.
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