| 摘要 |
PROBLEM TO BE SOLVED: To provide lithium ion secondary battery production equipment, capable of preventing mixing of metal impurities into a raw material. SOLUTION: A crusher 100 has a crushing chamber 104, a hammer 112, a guide ring 114, and a classifying separator 116. The hammer 112 rotates at a high speed within the crushing chamber 104 to crush a raw material 118. The guide ring 114 sends the crushed raw material to the classifying separator 116 by the flow of dry air. The classifying separator 116 selects the specified particles or lower from the particles of the crushed raw material sent with the guide ring 114 and allows only the selected particles to pass through. The surface of the hammer 112, the surface of the guide ring 114, the surface of the classifying separator, and an inner wall surface 104A of the crushing chamber 104, which comes in contact with the raw material 118, are coated with a non-metallic material such as ceramic or Teflon (registered trademark) as shown by hatched sections. |
