Behandling av slutblekt massa med i ett milt alkaliskt syrgassteg för att reducera eftergulning: Method for treatment of bleached chemical pulp
2005 (Swedish)Patent (Other (popular science, discussion, etc.))
The invention concerns a treatment step for what is known as fully bleached cellulose pulp, which maintains a brightness that exceeds ISO 88. With the aim of reducing brightness reversion and also with the aim to a certain degree of achieving an increase in brightness, the fully bleached pulp is treated in a mild alkaline oxygen gas step. The tendency for brightness reversion expressed in PC number can be reduced by as much as 25-40%.
Place, publisher, year, edition, pages
IdentifiersURN: urn:nbn:se:kth:diva-49188OAI: oai:DiVA.org:kth-49188DiVA: diva2:459373
SE 528066 (2006-08-22)
QC 20111125. QC 201308072011-11-252011-11-252013-08-07Bibliographically approved