Procédé de délignification et de blanchiment d'une pâte à papier chimique.

摘要

A delignification and bleaching method for chemical paper pulp wherein the pulp is processed in a series of steps including a step of forming a reaction medium in which the pulp is processed with hydrogen peroxide in the presence of an alkali metal silicate at a temperature (t) of over 100 DEG C and at a pressure of 5-200 bar.