SE8801731D0 - SET TO MAKE MECHANICAL AND CHEMICAL MECHANICAL PAPER MASS - Google Patents

SET TO MAKE MECHANICAL AND CHEMICAL MECHANICAL PAPER MASS

Info

Publication number
SE8801731D0
SE8801731D0 SE8801731A SE8801731A SE8801731D0 SE 8801731 D0 SE8801731 D0 SE 8801731D0 SE 8801731 A SE8801731 A SE 8801731A SE 8801731 A SE8801731 A SE 8801731A SE 8801731 D0 SE8801731 D0 SE 8801731D0
Authority
SE
Sweden
Prior art keywords
mechanical
paper mass
make
chemical mechanical
chemical
Prior art date
Application number
SE8801731A
Other languages
Swedish (sv)
Other versions
SE8801731L (en
SE461103B (en
Original Assignee
Svenska Traeforskningsinst
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 Svenska Traeforskningsinst filed Critical Svenska Traeforskningsinst
Priority to SE8801731A priority Critical patent/SE461103B/en
Publication of SE8801731D0 publication Critical patent/SE8801731D0/en
Priority to AT89905472T priority patent/ATE94596T1/en
Priority to DE89905472T priority patent/DE68909231T2/en
Priority to PCT/SE1989/000172 priority patent/WO1989010998A1/en
Priority to EP19890905472 priority patent/EP0413736B1/en
Priority to JP50517689A priority patent/JPH03504256A/en
Priority to CA000598482A priority patent/CA1320067C/en
Publication of SE8801731L publication Critical patent/SE8801731L/en
Publication of SE461103B publication Critical patent/SE461103B/en
Priority to FI905482A priority patent/FI91787C/en
Priority to NO904792A priority patent/NO172401C/en

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
    • 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
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)

Abstract

The invention relates to a method of manufacturing mechanical and chemi-mechanical papermaking pulp with low energy input by disintegrating and beating wood material in at least two steps. According to the invention, the material is coarse-disintegrated in a first step at a concentration exceeding 20 %, acid groups in the wood material are neutralized, the material is diluted to a concentration of 1-10 % and beaten in one or several steps.
SE8801731A 1988-05-06 1988-05-06 PREPARATION OF MECHANICAL AND CHEMICAL MECHANICS IN TWO STEPS SE461103B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE8801731A SE461103B (en) 1988-05-06 1988-05-06 PREPARATION OF MECHANICAL AND CHEMICAL MECHANICS IN TWO STEPS
JP50517689A JPH03504256A (en) 1988-05-06 1989-04-05 Mechanical and chemical-mechanical paper pulp production method
EP19890905472 EP0413736B1 (en) 1988-05-06 1989-04-05 Method of making mechanical and chemi-mechanical papermaking pulp
DE89905472T DE68909231T2 (en) 1988-05-06 1989-04-05 METHOD FOR PRODUCING THE MECHANICAL OR CHEMI-MECHANICAL PAPER PULP.
PCT/SE1989/000172 WO1989010998A1 (en) 1988-05-06 1989-04-05 Method of making mechanical and chemi-mechanical papermaking pulp
AT89905472T ATE94596T1 (en) 1988-05-06 1989-04-05 PROCESS FOR PRODUCTION OF MECHANICAL OR CHEMICAL-MECHANICAL PAPER PULP.
CA000598482A CA1320067C (en) 1988-05-06 1989-05-02 Method of making mechanical and chemi-mechanical papermaking pulp
FI905482A FI91787C (en) 1988-05-06 1990-11-05 Method for producing mechanical and chemimechanical pulp
NO904792A NO172401C (en) 1988-05-06 1990-11-05 PROCEDURE FOR MANUFACTURING MECHANICAL AND CHEMICAL MECHANICAL PAPER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8801731A SE461103B (en) 1988-05-06 1988-05-06 PREPARATION OF MECHANICAL AND CHEMICAL MECHANICS IN TWO STEPS

Publications (3)

Publication Number Publication Date
SE8801731D0 true SE8801731D0 (en) 1988-05-06
SE8801731L SE8801731L (en) 1989-11-07
SE461103B SE461103B (en) 1990-01-08

Family

ID=20372264

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8801731A SE461103B (en) 1988-05-06 1988-05-06 PREPARATION OF MECHANICAL AND CHEMICAL MECHANICS IN TWO STEPS

Country Status (7)

Country Link
EP (1) EP0413736B1 (en)
JP (1) JPH03504256A (en)
CA (1) CA1320067C (en)
DE (1) DE68909231T2 (en)
FI (1) FI91787C (en)
SE (1) SE461103B (en)
WO (1) WO1989010998A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9002039D0 (en) * 1990-06-07 1990-06-07 Svenska Traeforskningsinst SAVE TO PREPARE
US5853534A (en) * 1992-12-30 1998-12-29 Sunds Defibrator Industries Ab Method of producing pulp with high yield using a two-stage refining system operating at different temperatures
US6899791B2 (en) 1997-08-08 2005-05-31 Andritz Inc. Method of pretreating lignocellulose fiber-containing material in a pulp refining process
US8734611B2 (en) * 2008-03-12 2014-05-27 Andritz Inc. Medium consistency refining method of pulp and system
SE540961C2 (en) * 2016-05-23 2019-01-29 Holmen Ab Method of providing a paper fibre composition by combining chemical and mechanical pulping

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE409476B (en) * 1978-02-17 1979-08-20 Sca Development Ab KIT FOR REFINING LIGNOCELLULOSE-MATERIAL
JPS564791A (en) * 1979-06-18 1981-01-19 Kogyo Gijutsuin Bleaching of mechanical pulp
CA1246374A (en) * 1983-10-24 1988-12-13 Steve Rowland Two stage high consistency refiner
SE456826B (en) * 1986-04-18 1988-11-07 Svenska Traeforskningsinst SET TO REDUCE ENERGY CONSUMPTION BY REFINING CELLULOSALLY MATERIAL

Also Published As

Publication number Publication date
WO1989010998A1 (en) 1989-11-16
DE68909231T2 (en) 1994-04-28
EP0413736B1 (en) 1993-09-15
CA1320067C (en) 1993-07-13
SE8801731L (en) 1989-11-07
FI91787C (en) 1994-08-10
EP0413736A1 (en) 1991-02-27
FI91787B (en) 1994-04-29
DE68909231D1 (en) 1993-10-21
SE461103B (en) 1990-01-08
FI905482A0 (en) 1990-11-05
JPH03504256A (en) 1991-09-19

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