T/HNNMIA 1-2024 Active

Scope: This document describes the determination of the contents of silicon, magnesium, iron, aluminum, chromium, zirconium, potassium, and sodium in ladle drainage sand by wavelength-dispersive X-ray fluorescence spectrometry. This document is applicable to the determination of the contents of silicon, magnesium, iron, aluminum, chromium, zirconium, potassium, and sodium in ladle drainage sand. Main technical content: Samples prepared by the melting method are irradiated with primary X-rays generated by an X-ray tube on the surface of the samples. The fluorescence X-ray intensities of the characteristic spectral lines of the components to be determined in the samples are measured. According to the calibration curve and the measured X-ray fluorescence intensities, the mass fractions of the oxides of each element in the samples are calculated. Table 1 Determination range Composition Determination range (mass fraction) % SiO2 5.0–85.00 MgO 0.50–15.00 Fe2O3 1.00–28.00 Al2O3 4.00–20.00 Cr2O3 1.00–46.00 ZrO2 1.00–42.00 K2O 0.10–2.50 Na2O 0.10–2.50