Ash melting behavior by Fourier transform infrared spectroscopy

Abstract

A Fourier Transform Infrared Spectroscopic (FTIR) method involving a Fe₂O₃ flux was used to learn how China's coal ash melts. The relationship between ash fusion temperature and chemical composition, as well as the effects of Fe₂O₃ flux on the ash fusion temperature were studied. The relationship between ash fusion temperature and chemical composition, mineralogical phases and functional groups was analyzed with the FTIR method. The results show that the ash fusion temperature is related to the location and transmittance of certain absorption peaks, which is of great significance for the study of ash behavior.