SE8403392L - PROCEDURE AND DEVICE FOR THERMO-MECHANICAL MASS PREPARATION - Google Patents
PROCEDURE AND DEVICE FOR THERMO-MECHANICAL MASS PREPARATIONInfo
- 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
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000000930 thermomechanical effect Effects 0.000 title abstract 2
- 239000002657 fibrous material Substances 0.000 abstract 7
- 238000004537 pulping Methods 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 1
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.
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) |
-
1984
- 1984-05-25 CA CA000455132A patent/CA1252665A/en not_active Expired
- 1984-06-11 FI FI842341A patent/FI842341A/en not_active Application Discontinuation
- 1984-06-26 SE SE8403392A patent/SE8403392L/en not_active Application Discontinuation
- 1984-06-27 BR BR8403147A patent/BR8403147A/en unknown
Also Published As
Publication number | Publication date |
---|---|
SE8403392D0 (en) | 1984-06-26 |
FI842341A0 (en) | 1984-06-11 |
CA1252665A (en) | 1989-04-18 |
BR8403147A (en) | 1985-06-11 |
FI842341A (en) | 1984-12-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
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