| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tool for calcining ferrite capable of attaining long service life for a shelf board and improving calcining characteristics of a product. <P>SOLUTION: This tool for calcining the ferrite contains a plurality of the shelf boards and a support member arranged between the shelf boards so as to form a space accommodating articles to be calcined. The support member is a square frame-shaped body having ZrO<SB>2</SB>coating inside, where the surrounding wall forming the square frame-shaped body has a thickness of 7-15 mm and a vent hole is formed at the upper center of each surrounding wall. The width of the vent hole is 1/4-1/2 of the width of the surrounding wall where the vent hole is provided and the height is 1/6-1/3 of the height of the surrounding wall. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
