To provide a pulverizer pulverizing relatively large polymer components taken out by the disassembly of recovered products and reducing volume.

This pulverizer is composed of a chain conveyor 20 and an opposing wall 50. On the chain conveyor 20, a plurality of crushing blades 22 are erected to the outer side of the conveyor. On the opposing wall 50, a plurality of the crushing blades 52 are erected near a part to be closest to the chain conveyor 20. Polymer molded articles carried by the chain conveyor 20 are sheared and pulverized while being compressed by being pushed in between the chain conveyor 20 and the opposing wall 50.