The VortexCone is a hydrocyclone specially designed for waste paper processing with a backwash insert. It is used for continuous heavy dirt removal with a material density of 2-4%. By using a VortexCone correctly placed, wear on downstream machines can be significantly reduced. A VortexCone is suitable for separating contaminants such as sand, glass chips, stones, pieces of metal and wire that are smaller than the hole diameter of the powder persimmon.