Measurement of composition variation of municipal solid waste incineration (MSWI) fly ash during thermal treatment

摘要

This study aims to develop a methodology for analysis of composition variation of MSWI fly ash during heating process. This work performed analysis of elementary and chemical component variation as a function of temperature, by means of XRF and ICP. It is found that fly ash registers a SiO_2-Al_2O_3-metal oxides system and its content of glass phases is around 57% which is conducive to reduction of energy consumption in its recycling process. Content of crystal phases first increases between room temperature and 800℃ and then decreases between 800°C and 1300℃, while that of glass phases registers a reverse trend.