SE8301359L - PROCEDURE FOR THE PREPARATION OF IMPROVED GRINDING MASS - Google Patents

PROCEDURE FOR THE PREPARATION OF IMPROVED GRINDING MASS

Info

Publication number
SE8301359L
SE8301359L SE8301359A SE8301359A SE8301359L SE 8301359 L SE8301359 L SE 8301359L SE 8301359 A SE8301359 A SE 8301359A SE 8301359 A SE8301359 A SE 8301359A SE 8301359 L SE8301359 L SE 8301359L
Authority
SE
Sweden
Prior art keywords
fraction
groundwood pulp
accepts
fiber suspension
fiber
Prior art date
Application number
SE8301359A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8301359D0 (en
SE435941B (en
Inventor
J A I Lindahl
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE8301359A priority Critical patent/SE435941B/en
Publication of SE8301359D0 publication Critical patent/SE8301359D0/en
Priority to NZ20698284A priority patent/NZ206982A/en
Priority to AU24099/84A priority patent/AU567714B2/en
Priority to JP4637784A priority patent/JPS59173395A/en
Priority to AT83284A priority patent/AT385789B/en
Priority to FI841013A priority patent/FI72354C/en
Priority to NO840971A priority patent/NO156378C/en
Priority to DE19843409121 priority patent/DE3409121A1/en
Priority to CA000449449A priority patent/CA1228256A/en
Priority to FR8403898A priority patent/FR2542774B1/en
Publication of SE8301359L publication Critical patent/SE8301359L/en
Publication of SE435941B publication Critical patent/SE435941B/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

A process comprising: (1) grinding lignocellulosic material to form an aqueous groundwood pulp fiber suspension; (2) screening the groundwood pulp fiber suspension through a coarse screen having screen openings not less than about 5 mm; (3) defibrating lignocellulosic material separated out on the coarse screen; (4) recycling the defibrated lignocellulosic material to the groundwood pulp fiber suspension from the grinding step (1); (5) separating the groundwood pulp fiber suspension from step (2) into (a) an accepts fraction and (b) a rejects fraction, the latter comprising from about 30% up to about 85% by weight of the fiber suspension; (6) screening the rejects fraction 5(b) of the groundwood pulp fiber suspension through a screen having screen openings of less than about 5 mm; (7) separating the fiber suspension from step (6) into (a) an accepts fractions and (b) a rejects fraction; (8) recycling the rejects fraction 7(b) to the defibrating step (3) and then to the groundwood pulp fiber suspension from the grinding step (1); (9) screening the accepts fraction 7(a) to form (a) a short-fiber: accepts fraction of which from about 15 to about 60% comprises fibers passing through a sieve No. 150 in a Bauer-McNett classifier; and (b) a long-fiber rejects fraction of which at least 80% comprises long fibers retained on a sieve No. 150 in a Bauer-McNett classifier; (10) withdrawing the long-fiber rejects fraction 9(b) as groundwood pulp product (ii); (11) blending the short-fiber accepts fraction 9(a) with accepts fraction 5(a); and (12) withdrawing the resulting blend as short-fiber accepts fraction groundwood pulp product (i).
SE8301359A 1983-03-14 1983-03-14 PROCEDURE FOR THE PREPARATION OF IMPROVED GRINDING MASS SE435941B (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
SE8301359A SE435941B (en) 1983-03-14 1983-03-14 PROCEDURE FOR THE PREPARATION OF IMPROVED GRINDING MASS
NZ20698284A NZ206982A (en) 1983-03-14 1984-01-30 Method for manufacturing improved groundwood pulp and producing a long-fibre fraction
AU24099/84A AU567714B2 (en) 1983-03-14 1984-02-06 Producing groundwood pulp
JP4637784A JPS59173395A (en) 1983-03-14 1984-03-09 Production of modified mechanical pulp
CA000449449A CA1228256A (en) 1983-03-14 1984-03-13 Process for preparing groundwood pulp as short fiber and long fiber fractions
AT83284A AT385789B (en) 1983-03-14 1984-03-13 METHOD FOR PRODUCING WOOD GRIND
FI841013A FI72354C (en) 1983-03-14 1984-03-13 FOERFARANDE FOER FRAMSTAELLNING AV FOERBAETTRAD SLIPMASSA.
NO840971A NO156378C (en) 1983-03-14 1984-03-13 PROCEDURE FOR PREPARING MOLDING.
DE19843409121 DE3409121A1 (en) 1983-03-14 1984-03-13 Process for producing improved wood pulp
FR8403898A FR2542774B1 (en) 1983-03-14 1984-03-14 IMPROVED MECHANICAL PASTE MANUFACTURING PROCESS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8301359A SE435941B (en) 1983-03-14 1983-03-14 PROCEDURE FOR THE PREPARATION OF IMPROVED GRINDING MASS

Publications (3)

Publication Number Publication Date
SE8301359D0 SE8301359D0 (en) 1983-03-14
SE8301359L true SE8301359L (en) 1984-09-15
SE435941B SE435941B (en) 1984-10-29

Family

ID=20350348

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8301359A SE435941B (en) 1983-03-14 1983-03-14 PROCEDURE FOR THE PREPARATION OF IMPROVED GRINDING MASS

Country Status (10)

Country Link
JP (1) JPS59173395A (en)
AT (1) AT385789B (en)
AU (1) AU567714B2 (en)
CA (1) CA1228256A (en)
DE (1) DE3409121A1 (en)
FI (1) FI72354C (en)
FR (1) FR2542774B1 (en)
NO (1) NO156378C (en)
NZ (1) NZ206982A (en)
SE (1) SE435941B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE444825B (en) * 1984-09-10 1986-05-12 Mo Och Domsjoe Ab PROCEDURE FOR THE PREPARATION OF IMPROVED HOG REPLACEMENT MASS
SE8701423L (en) * 1987-04-06 1988-10-07 Kamyr Ab PROCEDURE FOR MANUFACTURING FIBER CONTENT WITH DIFFERENT FRAME MATERIALS
FI113552B (en) * 1999-12-09 2004-05-14 Upm Kymmene Corp Process for producing printing paper
DE102012215577A1 (en) * 2012-09-03 2014-03-06 Voith Patent Gmbh pressure screens
JP6263931B2 (en) * 2013-10-01 2018-01-24 セイコーエプソン株式会社 Sheet manufacturing apparatus and sheet manufacturing method
JP6481749B2 (en) * 2017-12-20 2019-03-13 セイコーエプソン株式会社 Sheet manufacturing apparatus and sheet manufacturing method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411720A (en) * 1966-08-18 1968-11-19 Cons Paper Bahamas Ltd Production of mechanical pulp from wood chips
US3791917A (en) * 1973-03-07 1974-02-12 Bird Machine Co Process for producing kraft paper laminate of top stock and base stock layers
US3925150A (en) * 1973-04-06 1975-12-09 Black Clawson Co Selective reclamation of waste paper products
CS205557B1 (en) * 1978-10-26 1981-05-29 Svetozar Vagac Low-grade waste paper processing plant
SE433954B (en) * 1980-03-25 1984-06-25 Mo Och Domsjoe Ab PROCEDURES AND DEVICES FOR REDUCING THE PREPARATION OF GRINDING MACHINES FROM WOODWOODS IN STONE GRINDING GROUPS REMOVE AND SPETOR YEAR REGULATION OF THE FREENESS OF THE MASS
IN157117B (en) * 1980-10-10 1986-01-18 Beloit Corp
SE431571C (en) * 1982-07-02 1985-09-09 Nils Anders Lennart Wikdahl SET FOR CLEANING A FIBER SUSPENSION

Also Published As

Publication number Publication date
FI841013A (en) 1984-09-15
DE3409121A1 (en) 1984-09-20
DE3409121C2 (en) 1990-06-21
AT385789B (en) 1988-05-10
JPS59173395A (en) 1984-10-01
AU567714B2 (en) 1987-12-03
NZ206982A (en) 1987-05-29
NO156378C (en) 1987-09-09
NO840971L (en) 1984-09-17
FI841013A0 (en) 1984-03-13
FR2542774B1 (en) 1989-06-30
ATA83284A (en) 1987-10-15
FI72354B (en) 1987-01-30
SE8301359D0 (en) 1983-03-14
JPS6352154B2 (en) 1988-10-18
FR2542774A1 (en) 1984-09-21
FI72354C (en) 1987-05-11
SE435941B (en) 1984-10-29
AU2409984A (en) 1984-09-20
NO156378B (en) 1987-06-01
CA1228256A (en) 1987-10-20

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