FI990531A0 - Manufacture of pulp - Google Patents

Manufacture of pulp

Info

Publication number
FI990531A0
FI990531A0 FI990531A FI990531A FI990531A0 FI 990531 A0 FI990531 A0 FI 990531A0 FI 990531 A FI990531 A FI 990531A FI 990531 A FI990531 A FI 990531A FI 990531 A0 FI990531 A0 FI 990531A0
Authority
FI
Finland
Prior art keywords
pulp
manufacture
Prior art date
Application number
FI990531A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI990531A (en
FI122773B (en
Inventor
Klas Erik Norborg
Ingrid Maria Helena Sandberg
Original Assignee
Stora Kopparbergs Bergslags Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20410503&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI990531(A0) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stora Kopparbergs Bergslags Ab filed Critical Stora Kopparbergs Bergslags Ab
Publication of FI990531A0 publication Critical patent/FI990531A0/en
Publication of FI990531A publication Critical patent/FI990531A/en
Application granted granted Critical
Publication of FI122773B publication Critical patent/FI122773B/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI990531A 1998-03-12 1999-03-11 Preparation of pulp FI122773B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9800797 1998-03-12
SE9800797A SE523084E (en) 1998-03-12 1998-03-12 Ways to continuously produce pulp and to increase the degree of closure in a bleachery

Publications (3)

Publication Number Publication Date
FI990531A0 true FI990531A0 (en) 1999-03-11
FI990531A FI990531A (en) 1999-09-13
FI122773B FI122773B (en) 2012-06-29

Family

ID=20410503

Family Applications (1)

Application Number Title Priority Date Filing Date
FI990531A FI122773B (en) 1998-03-12 1999-03-11 Preparation of pulp

Country Status (2)

Country Link
FI (1) FI122773B (en)
SE (1) SE523084E (en)

Also Published As

Publication number Publication date
SE9800797L (en) 1999-09-13
SE9800797D0 (en) 1998-03-12
SE523084E (en) 2011-02-15
FI990531A (en) 1999-09-13
FI122773B (en) 2012-06-29
SE523084C2 (en) 2004-03-23

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