INTERSTAGE TREATMENT OF MECHANICAL PULP

摘要

INTERSTAGE TREATMENT OF MECHANICAL PULP A two-stage pulp refining system in which the fibrous material from the first stage refiner is in contact with an alkaline bleaching solution between refining stages at a temperature of 32-96.degree.C and at a consistency of 15-25% on an oven dry basis. The material is then diluted and then pressed to a consistency of at least 20% and passes through the second stage refiner.