| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a refractory structure of a rotary hearth type furnace attaining easy removal and repair even if powder foreign matter such as material powder or refractory powder gets into a clearance serving as an expansion allowance provided at a refractory of the rotary hearth type furnace. <P>SOLUTION: The refractory structure of the rotary hearth type furnace 1 has corner refractories 8, 9 disposed on the inner peripheral side and outer peripheral side of a hearth 10, and forms the surface of the hearth 10 held by the corner refractories 8, 9, of a castable refractory 7. A surface layer part of the castable refractory 7 is provided with at least a set of first expansion allowance block 11 formed between two groove-like clearance circumferentially provided in proximity. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
