Method for recovering fiber from printed wastepaper

Details Method for recovering fiber from printed wastepaper Method for recovering fiber from printed wastepaper

D - Textiles, Paper

21

C

D21C 5/02 (2006.01) D21B 1/30 (2006.01) D21B 1/32 (2006.01)

Patent

CA 2246507

There is disclosed a method for recovering fiber from printed wastepaper by loading the wastepaper and water into a continuous batch fiber recovery apparatus. The wastepaper and water are agitated within the apparatus to form a pulp fiber slurry while introducing a deinking/agglomerating composition at predetermined time intervals to cause the ink particles associated with the printed wastepaper to separate from the paper and agglomerate to form large ink particles. The agglomerated ink particles are then removed from the pulp fiber slurry using separation techniques.

Ce procédé permet de récupérer des fibres à partir de déchets de papier imprimé, en chargeant ces déchets de papier et de l'eau dans une installation de récupération de fibres en continu. Les déchets de papier et l'eau sont agités dans cette installation de façon à former une pâte de fibres tandis qu'on introduit une composition de désencrage/agglomération à des intervalles déterminés pour que les particules d'encre présentes sur ces déchets de papier imprimé se séparent du papier et s'agglomèrent pour former de grosses particules d'encre qui sont ensuite retirées de cette pâte de fibres par des techniques de séparation.

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