Patent ID: 7044998

Claim:
A method of separating steam and gas from a steam containing, possibly glue-coated, fiber pulp produced by a refiner, the method comprising: placing a conical separation cyclone in a drying channel for drying the fiber pulp, directly feeding the produced hot fiber pulp from the refiner to the separation cyclone, separating the fiber pulp by the cyclone into a heavy fraction containing fibers and a light fraction containing steam and gas, blowing a hot drying air flow of substantially higher temperature than the fiber pulp entering the separation cyclone through the drying channel so that the separation cyclone is surrounded by the hot drying air flow, conducting the light steam and gas containing fraction out of the separation cyclone via an outlet conduit away from the hot drying air flow, and conducting the heavy fiber fraction out of the separation cyclone directly into the hot drying air flow, whereby the hot drying air flow entrains the heavy fiber fraction.