To prevent abnormal vibration that is caused in finely crushing a raw material by a vertical crusher.

In the vertical crusher of a type that crushes by a crushing roller while performing deairing by an auxiliary roller, the size of the center diameter of the auxiliary roller is configured to be larger than the size of the center diameter of the crushing roller. With this configuration, a raw material can be bitten at a wider part of the auxiliary roller, which enables the raw material layer to be gently compacted. As a result, in the raw material layer on a rotary table, can be reduced in void volume can be reduced while a rapid volume change is suppressed. Accordingly, since the raw material layer on the rotary table doe not cause a rapid volume change like the prior art even when the material layer on the rotary table is compacted by the auxiliary roller, abnormal vibration can be suppressed. Further, the surface pressure of the auxiliary roller is set to the range of 0.3-0.5 MPa, thereby suppressing waste of motive power and enabling the raw material layer to be effectively compacted.