Process for making refiner mechanical pulp

摘要: A process for making a refiner mechanical pulp from wood chips which comprises: (a) Comminuting the largely by splitting along grain; (b) Wetting said particles with solution of sulphite salt an alkali metal to add amount within range 1% 10% oven dry weight particles, having pH 7 12.5; (c) Steam heating bearing temperature between 80° C. and 165° holding them that period 0.5 80 minutes; (d) Passing after heating, through disc produce pulp.