| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a crusher capable of simply crushing an object to be treated without applying any strong impact force to the object and also to provide a cemented wood board treatment process using the crusher, by which a cement mortar part of the board can easily be separated from the board without finely disintegrating a wood part of the board, to obtain the wood part and a cement mortar part in their respective recyclable states. SOLUTION: This crusher is provided with plural rotary shafts each of which has plural projecting blades and which are placed parallel to each other, and used for crushing an object to be treated, with mainly shear and bending stress, caused by reversely rotating every adjacent two of the plural parallel rotary shafts to each other. This treatment process using the crusher comprises: crushing a cemented wood board with the crusher to obtain a crushed material; grinding the crushed material to obtain a ground material; and classifying the ground material into a cement mortar part and a wood part at a <=2 mm particle size as the border size.</p> |
