Abstract
In the pyrolysis gasification and melting process of municipal solid waste (MSW), the ash is melted and the molten slag is produced in the high temperature combustion chamber by the calorific energy of the MSW. Utilization of the slag enables reduction of the amount of landfill in large quantity, and also contributes to the establishment of social recycle system. Aiming at the establishment of practical utilization method of the slag produced at Yame Seibu Clean Center, we conducted investigations listed below and confirmed that the slag can be utilized as civil construction materials such as fine aggregate for asphalt. Investigations were made upon (1) chemical properties of the slag, (2) leaching properties of heavy metals from the slag, (3) physical properties of milled-slag, and (4) environmental assessment of the slag utilization and follow-up survey on quality of asphalt pavement surface.
