Rope-on-spool uncoiler and comminuter system

B - Operations – Transporting – 02 – C

Patent

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B02C 18/22 (2006.01)

Patent

CA 2553462

Rope made of cellulose fibers, the polymeric chemical structure of which fibers has not been modified (referred to as "raw" cellulose fibers), are subjected to intense electron beam irradiation insufficient to degrade their chemical structure but sufficient to modify their physical structure so as to allow them to be comminuted into fragments having a length no more than 6.35 mm (0.25"), preferably less than 3.175 mm (0.125"), and preferably 50% by weight of the fibers have a length less than 70~m. Such fragments of fibers are found to be particularly susceptible to being micronized in a micronizer into elongated granular fragments smaller than about 20~m at an economical production rate in excess of 22.7 Kg/hr (50 lb/hr) which was not possible when the micronizer was fed with naturally occurring fibers.

Un câble fait de fibres de cellulose dont les fibres n'ont pas subi de modification de leur structure chimique polymère (ci-après fibres de cellulose "brutes") est soumis à une irradiation intense avec des faisceaux d'électrons, qui sont insuffisants pour dégrader la structure chimique des fibres mais sont suffisants pour modifier leur structure physique de manière à leur permettre d'être dilacérées en plusieurs fragments ayant une longueur inférieure ou égale à 6,35 mm (0,25"), de préférence moins de 3,175 mm (0,125"), avec si possible 50 % en poids des fibres ayant une longueur inférieure à 70?m. Ces fragments de fibres se prêtent particulièrement bien à une micronisation dans un micronisateur pour donner des fragments granulaires allongés inférieurs à 20?m avec une productivité supérieure à 22,7 Kg/h (50 lb/h), qui n'a pas été possible lorsque le micronisateur a été alimenté avec des fibres naturelles.

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