| 摘要 |
PURPOSE:To permit an efficient crushing and/or coating to be performed by providing a return particle amount adjusting means on a passageway through which the particles no recovered by a classifying part at the time of the classifying operation are sent back to a crushing part. CONSTITUTION:The subject apparatus is composed of a crushing part A for crushing materials by an air blast or stream, a classifying part B for classifying the particles of the materials crushed by the crushing part A, a passageway 6 for supplying the particles from the crushing part A to the classifying part B and a return passageway 7 for returning to the crushing part A the particles not recovered by the classifying part B at the time of the classifying operation. This return passageway 7 is provided with a return particle amount adjusting means 15 (e.g., jet nozzle). As a result, an efficient crushing and/or coating can be performed. |
