73. Measurement of particle size distribution of coal ash

Abstract

Laser diffraction and scattering method is the popular method in particle size analysis. However this method is good for operation, the refractive (or relative-refractive) index is necessary to analyze the size distribution. In this study, the optimum relative-refractive index in measuring coal ash was determined. If particles less than 1μm are included in coal ash, there is a possibility that the size distribution of the particles can't be evaluated accurately.