| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus which can uniformly preheat the whole of sands by uniformly stirring the sands to be heated by turning a cylindrical casing. SOLUTION: A sand stirring section 12 is formed by providing the cylindrical casing, which receives the sands from its rear end part and discharges the sands from its front end part, on a frame 4 so as to be rotatably driven, a frame tilting means 7 for tilting the frame 4 such that the cylindrical casing 1 lowers its front end during the discharge of the sands, a sand feeding screw 10 provided at the rear end side in the cylindrical casing 1, and a plurality of protrusive sand stirring streaks 11 arranged on the inside peripheral surface of the cylindrical casing 1 at regular peripheral intervals so as to axially extend. A heater 13 for heating the sand stirring section 12 is provided. The charged sands S are fed into the sand stirring section 12 by means of the screw 10, and are fluidized and heated by turning the cylindrical casing 1, and then, are discharged by lowering the front part of the cylindrical casing 1. COPYRIGHT: (C)2004,JPO
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