conventional manner fig1 illustrates schematically the operations in a typical plant for producing pulp from wastepaper the term 34 wastepaper 34 as used herein includes newsprint paperboard old corrugated containers mixed office waste etc it includes any recyclable wastepaper for which stickies removal and or deinking would be desirable one example of a wastepaper pulping process is carried out at a consistency of about 4 to 16 the pulp from the pulper is diluted screened and then dewatered to a consistency of about 8 to 10 pulp from the thickener is first sent to a screw press and then to a disperser pulp accepts from the disperser are conveyed to the feed chest of the flotation unit where they are diluted with water to a consistency of about 1 the pulp is fed to the flotation cell where air is added ink containing foam on top of the pulp is then removed either mechanically or drawn off by vacuum the deinked pulp is cleaned with light cleaners such as tangential flow centrifugal cleaners lighter weight rejects are removed separately from the bottom of the conical part of the cleaners while the accepts stock is discharged tangentially heavier contaminants can be removed in heavy cleaners such as posiflow centrifugal cleaners the cleaned pulp is screened to provide the finished product in accordance with the invention the cationic kaolin can be added to.