In order to investigate the melting property of fly ash from municipal solid waste （MSW） incineration power plants

two types of fly ash from MSW incineration were selected for carrying out melting test. The chemical composition

surface morphology

and heavy metalls distribution of said ash samples have been tested before and after melting at 1400°C in 90 minutes

the apparent structure of molten samples became flat and smooth

having much hardness

and the cross-section of molten sample being in lustrious colours

and without obvious blowhoes. The ash sample had been completely molten. the heavy metalls

such as Ni

Cr

etc.

have above 80% to be solidified in the molten body; however

heavy metalls

like Pb

Cd

Hg

and Zn

have been almost fully volatilized

the volatilized sequence of them to be Pb>Cd>Hg>Zn>As.