Recovery of Incinerated Municipal Solid Wastes

Ash Melting and Utilization of Molten Slag for Road Construction as Aggregates

Abstract

This paper reported the recycling of incinerated municipal solid wastes in the form of molten slag obtained by melting ash. We stadied the fundamental characteristics of molten slag and examined the applicability to road construction aggregates.
Molten slag contained artificial minerals, mainly anorthite (CaAl₂Si₂O₈) and gehlenite (Ca₂Al₂SiO₇). The results of leaching tests satisfied the requirement stated in the Japanese regulatory leaching test (JLT-13) and assured stability and safety of the molten slag. From the results of CBR test, the modified CBR value of 98% was obtained.
We have concluded that it could be possible to utilize the molten slag as road construction material.