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METHOD FOR FRACTIONATION OF HIGHLY REFINED CELLULOSE
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Title:
METHOD FOR FRACTIONATION OF HIGHLY REFINED CELLULOSE
Author:
Kauppi, Anna
;
Backfolk, Kaj
;
Kankkunen, Jukka
;
Heiskanen, Isto
Subjects:
APPARATUS THEREFOR
;
PAPER-MAKING
;
PRODUCTION OF CELLULOSE
;
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
;
REGENERATION OF PULPING LIQUORS
;
TEXTILES
Description:
The present invention relates to a method for fractionation of a highly refined cellulose pulp into a fine fraction and coarse fraction, said method comprising: a) providing a highly refined cellulose pulp suspension comprising highly refined cellulose pulp having a Schopper-Riegler (SR) number in the range of 40-98 as determined by standard ISO 5267-1 and a content of fibers having a length >0.2 mm of at least 7 million fibers per gram based on dry weight; b) subjecting the highly refined cellulose pulp suspension to dewatering in a belt filter; c) collecting the dewatered retentate as the coarse fraction; and d) collecting the filtrate as the fine fraction; wherein the collected fine fraction contains 2-50 wt % of the solids of the highly refined cellulose pulp suspension provided in step a).
Creation Date:
2024
Language:
English
Source:
esp@cenet
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