To allow each individual, each factory, each hospital or the like to take the furnace in a facility as a melting furnace for incineration or ash, and to provide a waste resource by taking in hot water and generating steam to allow steam power production because of a maximum problem of industrial waste wherein transport, incineration, reclamation or the like is simplified by local production for local consumption in the hospital or the small-scale factory, or disposal in several.

This compact versatile melting furnace is normally used as an incinerator, and uses a burner 6 for 3-5 minutes. After ceramics inside the furnace are scorchingly heated, the compact versatile melting furnace is used as a melting furnace wherein the incineration is performed by only air 5, and thereafter, the ash or needle accumulated on the bottom of the furnace is liquefied at a temperature of 1,500°C or above.