The characteristics of heavy metals (Cd, Pb, Zn, Cu, Cr and Ni) were studied during pilot melting process of waste incineration fly ash, and it mainly focused on the solidification of those heavy metals in molten slag. The experiment factors include temperature (1290 degrees C, 1320 degrees C and 1360 degrees C), additive (10% glass powder), slag cooling mode(water or air cooling), whose influence on the heavy metals' solidification in the molten slag was studied. The result shows: the solidification of the heavy metals (Pb, Zn, Cu, Cr and Ni) increase on certain degree with temperature's increasing; Adding 10% glass powder makes the solidification of heavy metals increase greatly except Zn; For Zn, Cu, Cr and Ni, the solidification using air cooling mode is higher than that using water cooling mode.
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