METHOD OF PRODUCING CONIFEROUS WOOD CELLULOSES BY THE SULPHITE PROCESS ON A MAGNESIUM BASIS

摘要

Method of producing spruce wood celluloses by the sulphite process on a magnesium basis, in which spruce wood hogged chips are pretreated with milk of magnesium hydroxide or with magnesium sulphate solution at room temperature in a pretreatment stage and, after intermediate storage, are decomposed with a magnesium bisulphite solution at pH values of around 4.