CA1094263A - Method of producing ultra high yield pulp - Google Patents

Method of producing ultra high yield pulp

Info

Publication number
CA1094263A
CA1094263A CA260,981A CA260981A CA1094263A CA 1094263 A CA1094263 A CA 1094263A CA 260981 A CA260981 A CA 260981A CA 1094263 A CA1094263 A CA 1094263A
Authority
CA
Canada
Prior art keywords
chips
pulps
refining
solution
per cent
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
CA260,981A
Other languages
English (en)
French (fr)
Inventor
Douglas Atack
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.)
Pulp and Paper Research Institute of Canada
Original Assignee
Pulp and Paper Research Institute of Canada
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 Pulp and Paper Research Institute of Canada filed Critical Pulp and Paper Research Institute of Canada
Application granted granted Critical
Publication of CA1094263A publication Critical patent/CA1094263A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
CA260,981A 1975-09-18 1976-09-10 Method of producing ultra high yield pulp Expired CA1094263A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB38,377 1975-09-18
GB3837775 1975-09-18

Publications (1)

Publication Number Publication Date
CA1094263A true CA1094263A (en) 1981-01-27

Family

ID=10403089

Family Applications (1)

Application Number Title Priority Date Filing Date
CA260,981A Expired CA1094263A (en) 1975-09-18 1976-09-10 Method of producing ultra high yield pulp

Country Status (6)

Country Link
JP (1) JPS5240603A (xx)
CA (1) CA1094263A (xx)
FI (1) FI762641A (xx)
FR (1) FR2324793A1 (xx)
NO (1) NO763179L (xx)
SE (1) SE7610345L (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8300124D0 (sv) * 1983-01-12 1983-01-12 Billerud Uddeholm Ab Behandling av vedflis
DE102007022751A1 (de) * 2007-05-11 2008-11-13 Voith Patent Gmbh Ablauge eines Sulfitaufschlusses

Also Published As

Publication number Publication date
JPS5240603A (en) 1977-03-29
FI762641A (xx) 1977-03-19
SE7610345L (sv) 1977-03-19
NO763179L (xx) 1977-03-21
FR2324793A1 (fr) 1977-04-15
FR2324793B3 (xx) 1979-06-01

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Legal Events

Date Code Title Description
MKEX Expiry