Apparatus for the separation of fluid mixtures into components of different mass

An apparatus for the separation of fluid mixtures, I.E. Gases or vapor mixtures, especially for isotope separation or enrichment, whereby the gas mixture is subdivided into a heavy fraction or component, a light fraction or component and an intermediate fraction or component. A unitary, preferably cast, body forms passages for the gas mixture, which passages cooperate with outer and inner plates forming as separating elements and fitted against precision-machined surfaces of the cast body these elements defining nozzle edges, two oppositely directed flowguiding grooves, slots through which the light and medium fractions are withdrawn from the flow across these grooves, and peel-off or skimming members which separate the components of the stream