Treatment of chemical pulp

D - Textiles – Paper – 21 – C

Patent

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D21C 9/16 (2006.01) D21C 9/10 (2006.01)

Patent

CA 1206704

PRECIS DE LA DIVULGATION: La présente invention concerne un procédé pour le traitement de pâtes papetières chimiques, du type dans lequel on effectue un premier traitement au moyen d'une solution acide; un deuxième traitement au moyen d'une solu- tion alcaline de peroxyde, caractérisé en ce que le premier traitement acide s'effectue à une température comprise entre 50 et 80°C. Ce nouveau procédé est employé pour le blanchiment des pâtes chimiques.

420203

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