| 摘要 |
PROBLEM TO BE SOLVED: To provide a calcination unit showing a higher durability than that of the prior art.SOLUTION: Since an in-groove clearance 20 allowing relative motion between a first graphite plate 11 and a second graphite plate 12 is formed between a slide engaging protrusion 15 and the inner surface of a slide engaging groove 14 in a calcination unit 10 of this invention, the slide engaging protrusion 15 does not accept a large shearing force from the first graphite plate 11 and the second graphite plate 12 due to vibration and the like, damage of the slide engaging protrusion 15 can be prevented and damage of the plate-like main body portions of the first graphite plate 11 and the second graphite plate 12 is also prevented. In addition, since an in-hole clearance 19 allowing a relative motion between the first graphite plate 11 and the second graphite plate 12 is formed between a pin 18 and inner surfaces of pin storing holes 16B, 17, the pin 18 is also prevented from being damaged.SELECTED DRAWING: Figure 3 |
