SE7908578L - PROCEDURE FOR IMPROVING A CHARACTERISTICS PAPER Pulp PROPERTIES MADE BY - Google Patents

PROCEDURE FOR IMPROVING A CHARACTERISTICS PAPER Pulp PROPERTIES MADE BY

Info

Publication number
SE7908578L
SE7908578L SE7908578A SE7908578A SE7908578L SE 7908578 L SE7908578 L SE 7908578L SE 7908578 A SE7908578 A SE 7908578A SE 7908578 A SE7908578 A SE 7908578A SE 7908578 L SE7908578 L SE 7908578L
Authority
SE
Sweden
Prior art keywords
pulp
improving
procedure
paper pulp
valve
Prior art date
Application number
SE7908578A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
A Lehtinen
Original Assignee
Valmet Oy
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 Valmet Oy filed Critical Valmet Oy
Publication of SE7908578L publication Critical patent/SE7908578L/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
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • 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
    • D21B1/18—Disintegrating in mills in magazine-type machines
    • D21B1/24—Disintegrating in mills in magazine-type machines of the pocket type

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)
  • Soft Magnetic Materials (AREA)

Abstract

Logs 2 are fed through a chamber to be wet ground on a grinding stone 3 dipping into pulp 9 in a pulp pit 4. The pulp is stirred by a stirrer 15 in a pit extension 16 with a baffle 17 and overflows a weir 8 into a channel 10 for extraction through a pump 11. Above-atmospheric pressure in the chamber 12 is maintained by compressed air through a pipe 14 and valve 13 and steam through a pipe 19 and valve 18. Aqueous filler suspension and water are supplied as selected through jet pipes 5, 5a, 6 and 7. The heat generated by grinding causes lignin and other thermoplastic substances to become sticky and bind the filler material particles to the wood fibres. <IMAGE>
SE7908578A 1978-10-19 1979-10-17 PROCEDURE FOR IMPROVING A CHARACTERISTICS PAPER Pulp PROPERTIES MADE BY SE7908578L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI783193A FI57978C (en) 1978-10-19 1978-10-19 FOERFARANDE FOER FRAMSTAELLNING AV SLIPMASSA OCH FOER FOERBAETTRING AV DESS EGENSKAPER

Publications (1)

Publication Number Publication Date
SE7908578L true SE7908578L (en) 1980-04-20

Family

ID=8512087

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7908578A SE7908578L (en) 1978-10-19 1979-10-17 PROCEDURE FOR IMPROVING A CHARACTERISTICS PAPER Pulp PROPERTIES MADE BY

Country Status (10)

Country Link
JP (1) JPS5557090A (en)
BR (1) BR7906762A (en)
CA (1) CA1120301A (en)
DE (1) DE2941675A1 (en)
FI (1) FI57978C (en)
FR (1) FR2439263A1 (en)
GB (1) GB2035839B (en)
IT (1) IT1125495B (en)
NO (1) NO793357L (en)
SE (1) SE7908578L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109537337A (en) * 2018-07-16 2019-03-29 广西综改咨询服务有限公司 A kind of paper grade (stock) timber crushing grinding device

Also Published As

Publication number Publication date
FR2439263B3 (en) 1981-08-14
FI783193A (en) 1980-04-20
GB2035839B (en) 1982-10-27
DE2941675A1 (en) 1980-04-30
FR2439263A1 (en) 1980-05-16
FI57978B (en) 1980-07-31
GB2035839A (en) 1980-06-25
NO793357L (en) 1980-04-22
FI57978C (en) 1980-11-10
IT1125495B (en) 1986-05-14
JPS5557090A (en) 1980-04-26
CA1120301A (en) 1982-03-23
BR7906762A (en) 1980-06-03
IT7926605A0 (en) 1979-10-18

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