To deal with the issue of municipal solid waste incineration fly ash

are melting treatment technology was developed in combination with electric arc furnace metallurgical processes. Glass-ceramics was made of arc-melting slag from waste incineration fly ash and additional glass cullet through crushing

pressing and sintering at temperature between 750 ℃ and 1050 ℃. The crystallization behaviours of the glass-ceramics were examined by differential thermal analysis (DTA)

X-ray diffractometry (XRD) and scanning electron microscopy (SEM). It is shown that main crystalline phase of the glass-ceramics are wollastonite (CaSiO3) and diopside (Ca(Mg

Al)(Si

Al)2O6)

and the diffraction peaks become more intensive at higher temperature. It is found that the glass-ceramics sintered at 850 ℃ has the optimal physical

mechanical and chemical characteristics

and it has density of 262 g/cm 3

bending strength of 5496 MPa

chemical resistance of 27% and 0.9% in acid and alkali solution respectively. Furthermore

the leaching concentration of heavy metals is very low.