EP 1766130 A1 20070328 - TREATMENT OF PULP
Title (en)
TREATMENT OF PULP
Title (de)
ZELLSTOFFBEHANDLUNG
Title (fr)
TRAITEMENT DE LA PATE A PAPIER
Publication
Application
Priority
- GB 2005002303 W 20050610
- GB 0413068 A 20040611
Abstract (en)
[origin: WO2005121447A1] A method of treating a fibre pulp mixture comprises: (a) separating the fibre pulp mixture into at least two fractions to form a coarse fraction and a fine fraction; (b) bleaching the coarse fraction from (a); and (c) precipitating an alkakine earth metal carbonate in the fine fraction from (a). The products from steps (b) and (c) may combined in an integrated paper making process.
IPC 8 full level
D21H 17/00 (2006.01); D21C 9/10 (2006.01); D21H 15/02 (2006.01); D21H 17/64 (2006.01); D21H 17/67 (2006.01); D21H 17/70 (2006.01); D21H 25/14 (2006.01)
CPC (source: EP US)
D21C 9/10 (2013.01 - EP US); D21H 15/02 (2013.01 - EP US); D21H 17/70 (2013.01 - EP US); D21H 17/675 (2013.01 - EP US); D21H 25/14 (2013.01 - EP US)
Citation (search report)
See references of WO 2005121447A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005121447 A1 20051222; EP 1766130 A1 20070328; GB 0413068 D0 20040714; US 2008264586 A1 20081030
DOCDB simple family (application)
GB 2005002303 W 20050610; EP 05751798 A 20050610; GB 0413068 A 20040611; US 62875605 A 20050610