Device and method for the wet-wash concentration of solids

摘要

In wet-wash separation of solids according to the their density in a separating device by sink-float separation in a centrifugal zone of a rotating container with a transport device for the discharge of the separated solids, difficulties can arise during the discharge of the floating material which can be caused by unfavourable friction ratios of the floating material relative to the transport device and, for example, extremely low density of the floating material relative to the separating liquid. By the injection of a gas flow according to the invention through nozzles (25) arranged in the container (1) onto the layer (17) of floating material, a force assisting the transport is exerted on this layer (17) of floating material, as a result of which the discharge of floating material is ensured even in the case of floating solids which are otherwise very difficult to transport. <IMAGE>