AQUEOUS SUSPENSION OF MINERALS, AND/OR FILLERS, AND/OR DYES, METHOD OF PREPARATION THEREOF, AND MEANS FOR MANUFACTURING AND TREATING PAPER AND CLEANING WASTE WATER AND PULP FROM NOXIOUS SUBSTANCES Russian patent published in 1997 - IPC

FIELD: pulp-and-paper industry. SUBSTANCE: suspension contains at least 60 wt % of solids, whereas mineral or filler or dye is dispersed with one or several dispersing means. The latter contains one or several amphoteric an/or cationic and/or amphoteric cationic and/or amphoteric anionic and/or partly neutralized anionic and/or partly neutralized amphoteric anionic polyelectrolytes, particles of filler and/or dye and/or mineral outside bearing no or positive charge. When preparing suspension, a part of polyelectrolytes are added before disintegration process, a part during disintegration, and a part afterwards. Disintegration and dispersing may be carried out separately. EFFECT: improved procedure. 6 cl