“…Therefore, the depolymerization ability of CaO is an important factor affecting the slag viscosity and melting temperature. 9,10 All the above-mentioned studies have shown that the melting temperature of coal ash can be reduced when the content of MgO is within a certain range. However, although most studies examined the macroscopic influence of MgO on the melting characteristics of coal ash, there is still a lack of research analyzing its microscopic impact on the melting temperature of coal ash.…”