COMPOSITION OF SOLIDIFYING MATERIAL FOR STABILIZATION AND SOLIDIFICATION OF INCINERATOR ASH

摘要

PURPOSE: A composition for stabilizing and solidifying metal ions contained in incinerator ash(fly ash, bottom ash) is provided, which is recycled to asphalt pavement, soil improver, brick, block, etc. CONSTITUTION: The solidifying material comprises 40-55wt.% of CaO, 7-10wt.% of CaSO4, 18-27wt.% of SiO2, 0.5-1.0wt.% of CaCl2, 2-5wt.% of Fe2O3, 3-11wt.% of Al2O3 and 1-3wt.% of Na2SiO3. The incinerator ash is solidified by mixing 150kg of cement and 1m¬3 of incinerator ash, and adding 1-10%(based on the amount of cement) of solidifying material. The leachate concentration of incinerator ash mixed with cement and solidifier is lower than that of incinerator ash.