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EP0733734A3 - Straining method and screen - Google Patents

Straining method and screen Download PDF

Info

Publication number
EP0733734A3
EP0733734A3 EP96660005A EP96660005A EP0733734A3 EP 0733734 A3 EP0733734 A3 EP 0733734A3 EP 96660005 A EP96660005 A EP 96660005A EP 96660005 A EP96660005 A EP 96660005A EP 0733734 A3 EP0733734 A3 EP 0733734A3
Authority
EP
European Patent Office
Prior art keywords
straining
strained
screen
straining element
smaller
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP96660005A
Other languages
German (de)
French (fr)
Other versions
EP0733734A2 (en
Inventor
Tapio Järvensivu
Ilkka Roitto
Esa Forsten
Jouni Alho
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Powdermet Oy
Original Assignee
Jylharaisio 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 Jylharaisio Oy filed Critical Jylharaisio Oy
Publication of EP0733734A2 publication Critical patent/EP0733734A2/en
Publication of EP0733734A3 publication Critical patent/EP0733734A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/16—Cylinders and plates for screens
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/04—Flat screens

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

The invention relates to a method and a screen for straining filler and pigment slurries and coating mixtures in paper-making. The screen comprises an infeed chamber (8) incorporating a straining element (3) adapted to pass particulate matter smaller than a predetermined size. The material to be strained is fed to one side of said straining element (3) and the strained material is discharged from the opposite side. The straining is performed under a pressure head over the element and the hole size of the straining element (3) is smaller than 300 um and the flow rate properties of the material being strained are improved by virtue of a rotatable rotor (12) adapted to the ingoing side of the straining element (3).
EP96660005A 1995-03-24 1996-03-21 Straining method and screen Withdrawn EP0733734A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI951396A FI97983C (en) 1995-03-24 1995-03-24 Screening procedure and screening
FI951396 1995-03-24

Publications (2)

Publication Number Publication Date
EP0733734A2 EP0733734A2 (en) 1996-09-25
EP0733734A3 true EP0733734A3 (en) 1998-06-10

Family

ID=8543115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96660005A Withdrawn EP0733734A3 (en) 1995-03-24 1996-03-21 Straining method and screen

Country Status (2)

Country Link
EP (1) EP0733734A3 (en)
FI (1) FI97983C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI107278B (en) * 1996-02-28 2001-06-29 Metso Paper Inc Device for preventing clogging of a coating nozzle
FI103290B1 (en) * 1997-11-13 1999-05-31 Valmet Raisio Oy A method and arrangement for separating impurities from a machine cycle of a coating station
FI117059B (en) * 2004-09-21 2006-05-31 Metso Paper Inc Method and apparatus for separating contaminants from machine circulation in a coating station
EP1700953B1 (en) * 2005-03-10 2008-11-26 Sappi Alfeld GmbH Process for cleaning and recycling of a coating color
WO2010001153A1 (en) * 2008-06-30 2010-01-07 Imerys Minerals Limited Coating process with re-use of the removed coating excess
DK2163683T3 (en) * 2008-08-28 2011-04-26 Hans-Joachim Boltersdorf Pulps with a sieve plate and use of such pulps
EP2626146B1 (en) 2012-02-09 2014-08-06 Valmet Technologies, Inc. Screen
CN111608004A (en) * 2020-06-17 2020-09-01 重庆润民纸业有限公司 A kind of pulp filter device for corrugated paper manufacturing and using method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111914A (en) * 1965-07-07 1968-05-01 Buckeye Cellulose Corp Removal of gels and small particles from viscose
DE3010952A1 (en) * 1980-03-21 1981-10-08 J.M. Voith Gmbh, 7920 Heidenheim DISC SORTER FOR CLEANING FIBER SUSPENSIONS
GB2074886A (en) * 1980-04-22 1981-11-11 British Sidac Ltd A backwashable filter
WO1994024365A1 (en) * 1993-04-16 1994-10-27 Sigurd Fongen Means for filtering and fractionation of suspensions containing fibres, fibre fragments, fines and other particles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111914A (en) * 1965-07-07 1968-05-01 Buckeye Cellulose Corp Removal of gels and small particles from viscose
DE3010952A1 (en) * 1980-03-21 1981-10-08 J.M. Voith Gmbh, 7920 Heidenheim DISC SORTER FOR CLEANING FIBER SUSPENSIONS
GB2074886A (en) * 1980-04-22 1981-11-11 British Sidac Ltd A backwashable filter
WO1994024365A1 (en) * 1993-04-16 1994-10-27 Sigurd Fongen Means for filtering and fractionation of suspensions containing fibres, fibre fragments, fines and other particles

Also Published As

Publication number Publication date
FI97983B (en) 1996-12-13
FI951396L (en) 1996-09-25
FI951396A0 (en) 1995-03-24
EP0733734A2 (en) 1996-09-25
FI97983C (en) 1997-03-25

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