Abstract:For the analysis of complicated composition in stainless steel slag, the sample was prepared by fusion method under the following conditions: Li2B4O7-LiBO2 (m∶m=67∶33) was used as mixed flux, NH4NO3 was used as oxidizing agent, and LiBr solution (500g/L) was used as releasing agent. The extended fundamental parameter method in X-ray fluorescence spectrometry (XRF) analysis software UniQuant was adopted to establish and correct the background shape and impurity factor of stainless steel slag. The spectral interference and matrix effect were corrected using the spectral sensitivity coefficient and spectral overlapping coefficient. More than 20 components which possibly existed in stainless steel slag were analyzed. The quantitative analysis of 14 components (including CaO, MgO, SiO2, Al2O3, TiO2, MnO, Fe2O3, P2O5, SO3, F, Cr2O3, NiO, V2O5 and BaO) as well as qualitative and semi-quantitative analysis of other components in stainless steel slag were realized. The precision of sample preparation method was investigated, and the relative standard deviations (RSD, n=11) of determination results were between 0.15% and 11%. The precision test of standard sample JKS11 was conducted, and the RSD (n=11) were between 0.030% and 12%. The standard sample and actual sample of stainless steel slag were analyzed according to the experimental method. The found results of 14 main components were consistent with the certified values or those obtained by wet method.
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