Centrifugal Filters Solids that form a porous cake can be separated from liquids in a centrifuge. Slurry is fed to a rotating basket having a slotted or perforated wall covered with a filter medium such as canvas or metal cloth. Pressure resulting from the ifugal action forces the liquor through the filter medium, leaving the solids behind. If the feed to the basket is then shut off and the cake of solid spun for a short time, much of the residual liquid in the cake drains off the particles leaving the solids much "drier" than those from a filter press or filter vacuum When the ered material must subsequently be dried by thermal means, consider able savings may result from the use of a centrifuge. The main types of filtering centrifuges are suspended batch machines, which are discontinuous in their operation; automatic short-cycle batch machines; and continuous conveyor centrifuges. In suspended centrufuges the filter media are canvas or other fabric or woven metal cloth. In automatic machines fine metal screens are used; in conveyor centrifuges the filter medium is usually the slotted wall of the basket itself