The centrifuge is equipped with a slightly conical screen basket which is open at the larger diameter. The basket rotates around its horizontal axis and is simultaneously rapidly vibrated in the direction of this axis.The feed is pressed to the basket by centrifugal force and by vibration; it is conveyed along the inner side of the conical screen basket. During this process, surface water is removed from the particles and forced through the apertures of the basket. The dewatered solids are discharged at the front part of the water housing.