Patent ID: 7461744
Filing Date: 2008-12-09
Classification: D21B,D21F,Y02W

Abstract:
1. An apparatus for separating fibers from reject material produced in the manufacture of recycled pulp, the apparatus comprising: a reject cylinder configured to rotate about a rotational axis, the cylinder defining opposed axial openings, the reject material being fed into one of the openings and being discharged from the other of the openings along a feed direction; water nozzles for feeding water to the reject material in the cylinder to separate fibers therefrom; and a collecting basin extending in the feed direction from the one of the openings to the other of the openings, for recovering a suspension, comprising water and the fibers separated therewith, from the reject cylinder, the collecting basin further including two fluidly-connected basin structures with one of the basin structures being at least partially disposed within the other of the basin structures, the one basin structure being configured to collect the suspension from the reject cylinder and to direct the suspension perpendicularly to the rotational axis, through the fluid connection, to the other basin structure so as to separate heavy particles therefrom, the collecting basin being further configured to have a separating mechanism disposed downstream in the feed direction so as to separate light particles from the suspension, as the suspension is directed parallel to the rotational axis in the feed direction.