Abstract: A kind of solidified glass is prepared with simulated incineration ash and additives in certain proportion based on research and analysis of domestic and foreign vitrification formulas which combines our specific processing objects and processing requirements. The solidified glass is apparently hard, smooth, dense with a density of higher than 2.6 g/cm³ and shows a uniform glassy substance in XRD tests, and thus proves a feasible melting process of incineration ash treatment. Experimental results show that the melting temperature of incineration ash decreases with the increase of borax content of additive and the fluidity and molding effect are also significantly improved. Experimental conditions for the initial incineration ash melting treatment are as follows: the treatment temperature should be higher than 1 100 ℃ when the addition amount of B₂O₃ and Na₂O was 30%-35%; the treatment temperature can be lowered to 1 000 ℃ when the addition amount of B₂O₃ and Na₂O reaches 40%. Experiments of real incineration ash under the above mentioned same processing conditions obtained same results.

Key words: incineration ash, vitrification, process condition