PURPOSE:To provide an incinerator in which some large-size waster materials can uniformly be burnt in their normal state by a method wherein a rostol is installed within a deep incinerator device enclosed by a water jacket wall and a bogie having a water-jacket wall can be pulled out of a feeding inlet port. CONSTITUTION:An outer wall 2 is arranged on the outside of a water jacket furnace wall, outside air is fed through a lower inlet port 3, the air is subjected to natural convection in it, the hot air is discharged through an upper discharging port 4 to prevent an operator from accident as fire. The bogie 5 is pulled out at one side of the furnace body 20 by a motor. The bogie 5 has a water- cooled rostol 7. As the bogie 5 is moved, the water-jacket wall 1a of the bogie 5 and the fixed water jacket 1 are slid within the pipe 8 in such a way that a small-diameter pipe 8a in the pipe 8 is fixed to the wall 1a. the bogie supporting long materials and some large-sized waste materials thereon are drawn out of the incinerator body to facilitate a cleaning of residues, the ignited or burnt materials can be brought to the deep part of the incinerator and then the entire material are uniformly burned.
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