THERMAL DECOMPOSING APPARATUS

PURPOSE:To facilitate the production of a thermally decomposable container main body or a feed jig and to reduce an installation area by reducing the length of a high temp. holding part, by making the diameter of the temp. raising part of a thermal decomposing container main body on one end side thereof smaller than that of the high temp. holding part of said main body on the other end side thereof. CONSTITUTION:A fly ash supply part 6 is provided to one end surface of a container main body 1 and a fly ash discharge part 7 is provided to the other end surface thereof and the body diameter of the temp. raising part A on one end side of the main body 1 is made smaller than that of the high temp. holding part B on the other end side thereof. That is, the inner diameter d2 of the inside cylindrical body 2 in the high temp. holding part B is made larger than the inner diameter d1 of the inside cylindrical body 2 in the temp. raising part A. The inner diameter of an outer cylindrical body 3 is changed corresponding to a change in the inner diameter of the inside cylindrical body 2. When fly ash is supplied to the temp. raising part A, the fly ash is heated to predetermined temp. while moved from one end part of the container main body to the other end part thereof by small paddles 14A and subsequently moved to the high temp. holding part B having a large diameter to be held to high temp. for predetermined temp. while moved under stirring to be thermally decomposed.