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D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C11/00—Regeneration of pulp liquors or effluent waste waters
D21C11/0042—Fractionating or concentration of spent liquors by special methods
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P40/00—Technologies relating to the processing of minerals
Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
FR856991D1939-03-141939-03-14Perfectionnements apportés à la préparation de la pâte à papier ou analogue
ExpiredFR856991A
(fr)