China Nonferrous Metallurgy

The standard curves with large gradient in content range are established with standard samples such as vanadium-titanium blast furnace slag, vanadium slag, high-titanium slag, and blast furnace slag. And Al, Si, Fe, Ca, Mg, P, Ti, Mn, K, Na, V and Cr in slag are determined at the same time. The sample was prepared by melting, and the mixed flux of lithium tetraborate and lithium metaborate(67∶33) was used as the melting system. The effects of the selection of melting flux, melting temperature, dilution ratio and the amount of release agent on the melting effect were discussed. The standard curve was corrected by using α coefficient correction of change theory and spectral line overlap correction, and the precision of the method was investigated, among which the relative standard deviation was 0.21%~4.20%(n=10). The analysis results are compared with those of volumetric method and inductively coupled plasma atomic emission spectrometry, and the results are satisfactory, which can be applied to the rapid analysis of various types of vanadium slag samples.