<p>Combustible is crushed and dried, and metal and non-combustible are removed from the crushed coarse combustible. Then the crushed coarse combustible is subjected to secondary crushing to be separated into a coarse particle combustible and fluff which is a fine particle combustible. The coarse particle combustible thus separated is charged onto a fire grate (2) of an incinerator (1) to be subjected to plane combustion in a primary chamber (4). On the other hand, fluff is subjected to space combustion in a secondary chamber (7) by a fluff burner (5) for combustion, so that the combustible is incinerated. Accordingly, refuse containing a great deal of plastics which is almost formed into fluff is efficiently treated to increase an amount of refuse incinerated as a whole. <IMAGE></p>
