<p>Disclosed is a device for controlling a coal mill capable of estimating the amount of coal outputted with a desired accuracy. The device estimates the amount of coal pulverized by the coal mill and outputted to a boiler. The device includes a main computing circuit for computing a command signal relating to the amount of coal supplied from detected data sent from the boiler or a generator connected to the boiler and an additional control unit for computing the difference between a normal amount-of-coal-outputted pattern predetermined for the coal mill and the current amount-of-coal-outputted pattern. The result of the computation by the additional control unit is applied to the main computing circuit as a correction signal.</p>
