| 摘要 |
PROBLEM TO BE SOLVED: To provide a grinder capable of reducing a particle size that can be ground compared with conventional one while maintaining a quality of raw material. SOLUTION: The grinder comprises a casing 8 also serving as a grinding chamber for grinding a raw material M, and a first rotating body 9a and a second rotating body 9b provided in the state where they face to each other in the casing 8, wherein the raw material M fed from a feed port 8a provided in the casing 8 on the first rotating body 9a side is ground by an airflow C generated accompanying rotation of both rotating bodies 9a, 9b and ground material G is discharged from a discharge port 8b provided in the casing 8 on the second rotating body 9b side, the grinder further comprises a mixing chamber 2 provided in the upstream side of the feed port 8a for mixing the raw material M and a cooling fluid F, and a feed rate controlling means 1 for controlling either of or both of feed rates of the raw material M and the cooling fluid F so that a part of the cooling fluid F remaining in a liquid state enters in the casing 8 from the feed port 8a. COPYRIGHT: (C)2006,JPO&NCIPI
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