The present invention adds the blast furnace slag to incineration fly ash containing dioxin and harmful substances generated during incineration of household waste, using the mechanochemistry method to decompose harmful components in the incineration ash, and to process the incineration ash using cement as a raw material. It is about. In particular, it is possible to stabilize incineration fly ash and use it as a cement raw material through the simple processing method of mechanical chemistry and the addition of blast furnace slag as a stabilizing agent without pyrolysis or expensive processing of melting.
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