A process for the production of cellulose fiber pulp

Details A process for the production of cellulose fiber pulp A process for the production of cellulose fiber pulp

D - Textiles, Paper

21

C

D21C 5/00 (2006.01) D21B 1/30 (2006.01) D21D 5/02 (2006.01)

Patent

CA 2491111

The invention provides a process for producing mechanical pulp from vegetative matter. The process comprises using high pressure fluid jets to break apart the vegetative matter into small particles and to further reduce the size of the particles by causing them to pass through one or a series of screens or gratings. Each screen or grating in the series comprising successively smaller openings than those of the previous one. The process produces pulp that is suitable for many applications. The pulp attained may be delignified by the addition of further mechanical and/or biological steps.

L'invention porte sur un procédé de production de pâte mécanique à partir de matière végétale recourant à des jets de fluide à haute pression pour fragmenter la matière végétale en petites particules, dont la taille est encore réduite par passage à travers un ou plusieurs cribles ou tamis, les cribles ou tamis d'une série présentant successivement des trous plus petits que ceux des cribles ou tamis précédents. La pâte ainsi produite, qui a de nombreuses applications, peut être délignifiée lors d'étapes mécaniques ou biologiques supplémentaires.

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