CA1062858A - Oxygen bleaching of pulp in presence of high-silica protector - Google Patents

Oxygen bleaching of pulp in presence of high-silica protector

Info

Publication number
CA1062858A
CA1062858A CA234,066A CA234066A CA1062858A CA 1062858 A CA1062858 A CA 1062858A CA 234066 A CA234066 A CA 234066A CA 1062858 A CA1062858 A CA 1062858A
Authority
CA
Canada
Prior art keywords
pulp
bleaching
oxygen
semi
protector
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA234,066A
Other languages
English (en)
French (fr)
Inventor
James C. M. Hou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Potlatch Corp
Original Assignee
Potlatch Corp
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 Potlatch Corp filed Critical Potlatch Corp
Application granted granted Critical
Publication of CA1062858A publication Critical patent/CA1062858A/en
Expired legal-status Critical Current

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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA234,066A 1975-02-18 1975-08-25 Oxygen bleaching of pulp in presence of high-silica protector Expired CA1062858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55027475A 1975-02-18 1975-02-18

Publications (1)

Publication Number Publication Date
CA1062858A true CA1062858A (en) 1979-09-25

Family

ID=24196466

Family Applications (1)

Application Number Title Priority Date Filing Date
CA234,066A Expired CA1062858A (en) 1975-02-18 1975-08-25 Oxygen bleaching of pulp in presence of high-silica protector

Country Status (7)

Country Link
JP (1) JPS5220562B2 (de)
CA (1) CA1062858A (de)
DE (1) DE2552931A1 (de)
FR (1) FR2301632A1 (de)
GB (1) GB1519072A (de)
SE (1) SE7600243L (de)
ZA (1) ZA76274B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036376A1 (de) * 2007-07-31 2009-02-05 Voith Patent Gmbh Gebleichter Faserstoff
SE543640C2 (en) * 2019-09-04 2021-05-11 Stora Enso Oyj Fluff pulp from oxygen delignified pulp

Also Published As

Publication number Publication date
FR2301632A1 (fr) 1976-09-17
ZA76274B (en) 1976-12-29
JPS5196505A (de) 1976-08-24
JPS5220562B2 (de) 1977-06-04
FR2301632B1 (de) 1980-06-20
DE2552931A1 (de) 1976-09-02
GB1519072A (en) 1978-07-26
SE7600243L (sv) 1976-08-19

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