ZA948015B - Method of pulp treatment - Google Patents

Method of pulp treatment

Info

Publication number
ZA948015B
ZA948015B ZA948015A ZA948015A ZA948015B ZA 948015 B ZA948015 B ZA 948015B ZA 948015 A ZA948015 A ZA 948015A ZA 948015 A ZA948015 A ZA 948015A ZA 948015 B ZA948015 B ZA 948015B
Authority
ZA
South Africa
Prior art keywords
flow
metal ions
pulp
pct
washing
Prior art date
Application number
ZA948015A
Other languages
English (en)
Inventor
Ulf Germgard
Original Assignee
Sunds Defibrator Ind 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
Application filed by Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Publication of ZA948015B publication Critical patent/ZA948015B/xx

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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Disintegrating Or Milling (AREA)
ZA948015A 1993-11-05 1994-10-13 Method of pulp treatment ZA948015B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9303644A SE501985C2 (sv) 1993-11-05 1993-11-05 Förfarande för avskiljning av metalljoner från massa i samband med blekning av massan

Publications (1)

Publication Number Publication Date
ZA948015B true ZA948015B (en) 1995-05-31

Family

ID=20391642

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA948015A ZA948015B (en) 1993-11-05 1994-10-13 Method of pulp treatment

Country Status (13)

Country Link
US (1) US5980689A (no)
EP (1) EP0726980B1 (no)
JP (1) JPH09504582A (no)
AT (1) ATE175737T1 (no)
AU (1) AU1036595A (no)
BR (1) BR9407975A (no)
CA (1) CA2173735A1 (no)
DE (1) DE69415997T2 (no)
FI (1) FI961882A0 (no)
NO (1) NO961815D0 (no)
SE (1) SE501985C2 (no)
WO (1) WO1995012710A1 (no)
ZA (1) ZA948015B (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7297225B2 (en) * 2004-06-22 2007-11-20 Georgia-Pacific Consumer Products Lp Process for high temperature peroxide bleaching of pulp with cool discharge
FI128968B (en) * 2020-03-31 2021-04-15 Chempolis Oy Peroxide bleaching of cellulose pulp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE97179T1 (de) * 1989-06-06 1993-11-15 Eka Nobel Ab Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon
EP0564443A1 (en) * 1992-03-15 1993-10-06 Kamyr, Inc. Treatment of bleach plant filtrates
CA2090396A1 (en) * 1992-04-03 1993-10-04 Josef Theurer Tamping machine with a two-sleeper tamping unit
SE9201477L (sv) * 1992-05-11 1993-06-28 Kamyr Ab Saett vid blekning av massa utan anvaendning av klorkemikalier
SE500113C2 (sv) * 1992-07-09 1994-04-18 Kamyr Ab Sätt vid blekning av massa för omhändertagande av utlösta metaller
SE9301160L (sv) * 1992-08-28 1994-03-01 Sunds Defibrator Ind Ab Förfarande för behandling av processvatten

Also Published As

Publication number Publication date
FI961882A (fi) 1996-05-03
US5980689A (en) 1999-11-09
BR9407975A (pt) 1996-12-03
SE9303644L (sv) 1995-05-06
WO1995012710A1 (en) 1995-05-11
SE9303644D0 (sv) 1993-11-05
DE69415997T2 (de) 1999-05-27
SE501985C2 (sv) 1995-07-03
NO961815L (no) 1996-05-03
EP0726980A1 (en) 1996-08-21
JPH09504582A (ja) 1997-05-06
DE69415997D1 (de) 1999-02-25
AU1036595A (en) 1995-05-23
NO961815D0 (no) 1996-05-03
CA2173735A1 (en) 1995-05-11
FI961882A0 (fi) 1996-05-03
ATE175737T1 (de) 1999-01-15
EP0726980B1 (en) 1999-01-13

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