SE8403392L - PROCEDURE AND DEVICE FOR THERMO-MECHANICAL MASS PREPARATION - Google Patents

PROCEDURE AND DEVICE FOR THERMO-MECHANICAL MASS PREPARATION

Info

Publication number
SE8403392L
SE8403392L SE8403392A SE8403392A SE8403392L SE 8403392 L SE8403392 L SE 8403392L SE 8403392 A SE8403392 A SE 8403392A SE 8403392 A SE8403392 A SE 8403392A SE 8403392 L SE8403392 L SE 8403392L
Authority
SE
Sweden
Prior art keywords
fibrous material
thermo
procedure
mass preparation
refiner
Prior art date
Application number
SE8403392A
Other languages
Swedish (sv)
Other versions
SE8403392D0 (en
Inventor
E A Alvord
Original Assignee
Koppers Co Inc
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 Koppers Co Inc filed Critical Koppers Co Inc
Publication of SE8403392D0 publication Critical patent/SE8403392D0/en
Publication of SE8403392L publication Critical patent/SE8403392L/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
    • D21B1/14—Disintegrating in mills

Landscapes

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

Abstract

An apparatus for thermo-mechanical pulping of wood comprising a first refiner means for reducing the chips to a partially reduced fibrous material, a second refiner means for further reducing the partially reduced fibrous material recovered from the first refiner means to a more completely reduced fibrous material, and means for separating the more completely reduced fibrous material into accept fibrous material and reject fibrous material, wherein the improvement comprises a means for reintroducing the reject fibrous material into the second refiner means and the method of using this apparatus.
SE8403392A 1983-06-28 1984-06-26 PROCEDURE AND DEVICE FOR THERMO-MECHANICAL MASS PREPARATION SE8403392L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50880583A 1983-06-28 1983-06-28

Publications (2)

Publication Number Publication Date
SE8403392D0 SE8403392D0 (en) 1984-06-26
SE8403392L true SE8403392L (en) 1984-12-29

Family

ID=24024149

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8403392A SE8403392L (en) 1983-06-28 1984-06-26 PROCEDURE AND DEVICE FOR THERMO-MECHANICAL MASS PREPARATION

Country Status (4)

Country Link
BR (1) BR8403147A (en)
CA (1) CA1252665A (en)
FI (1) FI842341A (en)
SE (1) SE8403392L (en)

Also Published As

Publication number Publication date
FI842341A0 (en) 1984-06-11
BR8403147A (en) 1985-06-11
FI842341A (en) 1984-12-29
SE8403392D0 (en) 1984-06-26
CA1252665A (en) 1989-04-18

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