METHOD OF DRY SEPARATION OF PAPER WASTES WITH LASER AND XEROGRAPHIC PRINTING FROM OTHER PAPER WASTES, METHOD OF REMOVING MAGNETIC PRINTING INK FROM PAPER PULP, METHOD OF PROCESSING PAPER WASTES, METHOD OF REMOVING ADHESIVE MATERIAL FROM PAPER PULP

摘要

FIELD: method of dry separation and/or classification of paper wastes with laser and xerographic printing containing printing ink with magnetic component, removal of magnetic printing ink from paper pulp; processing of paper wastes containing printing ink; removal of adhesive material from paper pulp. SUBSTANCE: method of dry separation and/or classification of paper waste with laser and xerographic printing containing printing ink with magnetic component from other paper wastes is realized with the help of at least one magnet with application of corresponding magnetic force. The method of removal of magnetic printing ink from paper pump of paper wastes with laser and xerographic printing is realized by supplying of paper wastes pulp to bypass at least one magnet. The method of processing of paper wastes containing printing ink not containing magnetic component is realized with use of one or several magnetic carriers in composition of printing ink to remove this ink with the help of at least one magnet. The method of removal of adhesive material is realized with the help of magnetic filed by introduction into adhesive material of magnetic filler or carrier. EFFECT: production of high-quality glossy paper without spots due to exclusion of effect of darkening, higher economic efficiency and ecological safety of the processes. 13 cl