Abstract：The vanadium-titanium slag contains rich beneficial elements including vanadium and titanium, and it has high comprehensive utilization value. The determination of composition in vanadium-titanium slag usually adopts chemical analysis method, which has some disadvantages such as complicated operation procedures, large consumption of chemical reagents and long analysis period. The transparent fuse piece of sample was prepared under the following conditions: the flux was lithium tetraborate-lithium carbonate, the dilution ratio was 1∶20, the release agent was potassium iodide, and the sample was pre-oxidized at 700℃ for 20min followed by fusion at 1100℃ for 22min. The standard samples (vanadium slag, vanadium-titanium blast furnace slag, converter slag, etc) and production samples (vanadium tailings, ferrovanadium slag and iron ore, which had been determined by wet method) were used to prepare series calibration samples with matched concentration and gradient to the test samples. The content range of calibration curve was expanded. The rapid determination method of TFe, SiO2, Al2O3, CaO, MgO, MnO, V2O5, TiO2, Cr2O3 and P in vanadium slag, vanadium-titanium blast furnace slag, ferrovanadium slag and vanadium tailings by X-ray fluorescence spectrometry (XRF) with fusion sample preparation was established. The problem that one set of analysis method should be established for each type of vanadium-titanium slag and it could not be used for the simultaneous determination of several types of vanadium-titanium slag was solved. The precision test of vanadium-titanium slag sample was conducted. The relative standard deviations (RSD, n=10) of determination results were less than 7%. The experimental method was applied for the analysis of vanadium-titanium slag standard sample, and the found results were consistent with the certified values. The detection requirements of each component in vanadium-titanium slag could be satisfied.
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