Abstract: In an apparatus for separating off the liquid portion from the solid portion of two-phase systems, in particular ceramic slips, having a screw and having filter surrounding the screw, a two-stage construction of the apparatus is realized by a first filter and a second filter section.

Abstract: An apparatus is described for separating the liquid portion from the solid portion of a liquid, finely disperse system, for example ceramic slip, having a worm (12) provided in a cylindrical housing (14), driven and surrounded by a filter aid (13), means for supplying slip at one end of the housing and a narrow solid discharge located on the worm axis at the other end of the housing, in which apparatus the filter aid (13) is inserted (at 21) so as to be secured against rotation in a massive casing forming the cylindrical housing (14), this casing being provided on its surface facing the filter aid (13) with a plurality of spaced peripheral grooves (15) which open out into a filtrate outflow (5), and the surface of the filter aid (13) facing the worm (12) being covered with an abrasion-proof, sufficiently wide-meshed screen (17), thereby creating a worm channel with a flat design, in which the slip is circulated so strongly by the relative movement between the worm and the worm cylinder that the liquid concent