PROCESS FOR PRODUCING CHEMICALLY UNBLEACHED SULPHATE PULP FROM CONIFEROUS TREE WOOD

摘要

the invention relates to a process for obtaining technical neînălbite cells sulphate there is redwood, in paper and paperboard, for use in the manufacture of paper used in electrotechnical purpose (telephonepower capacitors, composite electrotechnical). in the process according to the invention, the stage of demineralisation consists of treating cellulose fibres, for 50...60 min with sulfuric acid having concentration of 96%, added in amount of 35 50 kg hsopentru a ton of dry fiber.