METHOD AND APPARATUS FOR RECOVERING FIBRES FROM WHITE WATER OF PAPER MILL

摘要

A method and an apparatus for recovering fibres from white water of a paper mill. In the method, filtering is carried out by conveying the white water through auxiliary pulp produced from a long-fibred fraction of the fibre material removed from a filter (2). The apparatus comprises a screen to fractionate the fibre material removed from the filter (2) into a short-fibr ed and a long-fibred fractions, and means for returning the long-fibred fractio n to the filtering surface of the filter (2).