FI884807A0 - Peroxidblekning av mekaniska massor. - Google Patents

Peroxidblekning av mekaniska massor.

Info

Publication number
FI884807A0
FI884807A0 FI884807A FI884807A FI884807A0 FI 884807 A0 FI884807 A0 FI 884807A0 FI 884807 A FI884807 A FI 884807A FI 884807 A FI884807 A FI 884807A FI 884807 A0 FI884807 A0 FI 884807A0
Authority
FI
Finland
Prior art keywords
peroxidblekning
massor
mechanical
mechanical massor
Prior art date
Application number
FI884807A
Other languages
English (en)
Other versions
FI884807A (fi
Inventor
Peter Joyce
David Morson Mackie
Original Assignee
Mac Millan Bloedel Ltd
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
Application filed by Mac Millan Bloedel Ltd filed Critical Mac Millan Bloedel Ltd
Publication of FI884807A0 publication Critical patent/FI884807A0/fi
Publication of FI884807A publication Critical patent/FI884807A/fi

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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
FI884807A 1987-10-19 1988-10-18 Peroxidblekning av mekaniska massor. FI884807A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/110,179 US4798652A (en) 1987-10-19 1987-10-19 Peroxide bleaching of mechanical pulps

Publications (2)

Publication Number Publication Date
FI884807A0 true FI884807A0 (fi) 1988-10-18
FI884807A FI884807A (fi) 1989-04-20

Family

ID=22331631

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884807A FI884807A (fi) 1987-10-19 1988-10-18 Peroxidblekning av mekaniska massor.

Country Status (3)

Country Link
US (1) US4798652A (fi)
FI (1) FI884807A (fi)
SE (1) SE8803707L (fi)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4842877A (en) * 1988-04-05 1989-06-27 Xylan, Inc. Delignification of non-woody biomass
US4946556A (en) * 1989-04-25 1990-08-07 Kamyr, Inc. Method of oxygen delignifying wood pulp with between stage washing
US5118389A (en) * 1990-07-06 1992-06-02 Ici Canada Inc. Two-stage peroxide bleaching process using different amounts of peroxide on different portions of mechanical pulp
US5205907A (en) * 1991-11-25 1993-04-27 Macmillan Bloedel Limited Removal of manganese from pulp using a chelating agent and magnesium sulphate
US5223091A (en) * 1991-11-25 1993-06-29 Macmillan Bloedel Limited Method of brightening mechanical pulp using silicate-free peroxide bleaching
ES2118445T3 (es) * 1993-10-26 1998-09-16 Akzo Nobel Nv Acidos aminoalcano-difosfonicos en blanqueo de pasta papelera.
DE69620608T2 (de) * 1995-06-20 2002-10-31 Andritz Oy Helsinki Verfahren und vorrichtung zur behandlung eines schlecht wärmeableitenden materials
US7052578B2 (en) * 2000-01-28 2006-05-30 Martin Marietta Magnesia Specialties, Inc. Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp
FI122238B (fi) * 2006-02-09 2011-10-31 Metso Automation Oy Menetelmä ja laitteisto massasuspension kokonaisperoksidipitoisuuden määrittämiseksi

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA686115A (en) * 1964-05-12 J. Gard Andrew Bleaching of wood pulp
SE420329C (sv) * 1978-02-16 1984-07-10 Mo Och Domsjoe Ab Forfarande for framstellning av slipmassa vid overtryck

Also Published As

Publication number Publication date
US4798652A (en) 1989-01-17
SE8803707D0 (sv) 1988-10-18
SE8803707L (sv) 1989-04-20
FI884807A (fi) 1989-04-20

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Legal Events

Date Code Title Description
FA Application withdrawn

Owner name: MACMILLAN BLOEDEL LIMITED