Abstract: The invention relates to a filter device with a base frame, a substantially horizontal, disk-shaped filter pan, which is supported on the base frame such that it can be driven in a rotating manner, has a plurality of disk-segment-shaped filter cells and a pan hub, on which the filter cells are connected to inlet openings of the pan hub in order to drain off filtrate, and a control head which is provided with channels for discharging filtrate from the pan hub, wherein the control head is arranged in a torque-proof and axially movable manner below the pan hub and rests in a sealed manner against an underside of the pan hub. To implement an efficient filtration a pressure housing is provided, which encloses the filter pan and the control head in a pressure-sealed manner. Furthermore, a pressure unit is provided, with which an overpressure can be set in the pressure housing.

Abstract: Apparatus and a method are presented for the mechanical removal of moisture from a filter cake. Differential pressure causes the flow of a treatment fluid through the filter cake. The treatment fluid displaces liquid originally present in the filter cake to prevent cracking of the filter cake.