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D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C1/00—Pretreatment of the finely-divided materials before digesting
FR420640A1909-12-131910-09-22Procédé pour la fabrication du papier à l'aide de sciure de bois ou de bois déchiqueté
ExpiredFR420640A
(fr)
Procédé pour la production d'alcool au moyen des lessives de déchet provenant de la fabrication de la pâte de bois à l'aide de sulfites solubles