Patent ID: 7431143

Claim:
A method for controlling feeding of solid matter in a process which comprises at least one unloading point for the solid matter, at least one belt conveyor and at least one feeding point for the solid matter, the solid matter being unloaded in the unloading point from solid matter storage to a belt conveyor, which is arranged to convey said solid matter either directly or via at least one other belt conveyor to the feeding point, comprising determining a set value for a thickness of a material bed formed of the solid matter to be unloaded to the belt conveyor; controlling the unloading of the solid matter to the belt conveyor in the unloading point in such a way that the thickness of the material bed follows said set value; determining a material bed profile expressing variation in the thickness of the material bed in a longitudinal direction of the belt conveyor; determining a material flow travelling on the belt conveyor on the basis of said profile; and controlling in the feeding point an amount of the solid matter to be fed by controlling a speed of the belt conveyor.