Method for bleaching chemical paper pulps by final ozone...

D - Textiles – Paper – 21 – C

Patent

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D21C 9/153 (2006.01)

Patent

CA 2670697

Method for treating a prebleached chemical pulp comprising a step of ozone treatment of the said pulp, carried out at a temperature above 60°C, advantageously above 65°C and even more advantageously above or equal to 70°C.

Procédé de traitement d'une pâte à papier pré-blanchie comprenant un traitement à l'ozone de ladite pâte effectué à une température supérieure à 60°C, de préférence à plus de 65 °C et idéalement à 70 °C ou plus.

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