Mechanochemically induced synthesis of anorthite in MSWI fly ash with kaolin

► The composition of the MSWI fly ash is stoichiometrically adjusted by the addition of kaolin. ► This study uses a suitable temperature program for sintering and the synthesis anorthite. ► Wet milling processes destructs the crystalline structure, forms the amorphous phase, and decrease the leaching of the heavy metals for the ash. ► The milling process would allow the synthesization temperature to be reduced from 1300 °C to 950 °C.