Under the normal pressure, the stock flows into rejects separator.Affected by the centrifugal force from high-speed rotating rotor,accepts are separated from the rejects by passing through the screen plate. At the same time, with the rotating effect of the rotor, the accepts will flow into the next process and the rejects will be defibrized again. Furthermore, the rejects will be flushed continuously with water in order to recycle the stock in the rejects.Low consumption in energy and cost reduction.After processed, the rejects are with less fiber and less water.