COAL ASH ESTIMATING METHOD BY FLUORESCENT X-RAY ANALYSIS

摘要

PURPOSE: To lower the error of coal ash estimation by fluorescent x-ray analysis by computing the coal ash quantity from content of each component obtained by fluorescent x-ray analysis based on a specified equation. ;CONSTITUTION: Coal is pulverized and a binder is added thereto and press- forming is carried out to give a briquette specimen. X-ray intensity for Si, AQ, P, Ti, Ca, Mg, Fe, Mn, and S is measured by carrying out fluorescent x-ray analysis for the specimen. Based on the working curve at zero intensity of fluorescent x-ray at the time when no element exists, said working curve is set previously based on the x-ray intensity for each element, the content of each component of SiO₂, Al₂O₃, P₂O₅, TiO₂, CaO, MgO, Fe₂O₃, MnO, and total S is obtained by conversion. The coal ash quantity is computed from the content of each component based on the equation wherein A₄=1.116, B₄=0.945, C₃=1.819, D₃= 0.791, E₃=0.944, F₁=0.546, J₄=0.141. Consequently, the number of analysis processes is lessened and labour is saved as compared with chemical analysis by JIS method.;COPYRIGHT: (C)1995,JPO