| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of continuously and efficiently crushing ceramic raw material with high hardness. SOLUTION: A crushing method of ceramic raw material is provided in which the ceramic raw material with a maximum particle diameter of 200μm or less is charged into a vibration mill with an inner wall and media composed of an iron-based material, crushed to obtain the particle content of 3μm or less of 10-40 mass% and classified, particles of 7μm or less are collected, while part of or all of the residual crushed particles over 7μm are returned to the ceramic raw material. In the classified and collected particles of 7μm or less, the ratio of particles of 3μm or less is 85-95 mass%. The ratio of the classified and collected particles of 7μm or less is 10-30 pts.mass to 100 pts.mass of the ceramic raw material, and the return ratio of part of or all particles over 7μm is set to 10-30 pts.mass to the 100 pts.mass of the ceramic raw material. COPYRIGHT: (C)2009,JPO&INPIT
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