ATE14762T1 - PROCESS FOR IMPROVING WASHING OF CELLULOSIC PULP MADE FROM LIGNOCELLULOSIC MATERIAL. - Google Patents

PROCESS FOR IMPROVING WASHING OF CELLULOSIC PULP MADE FROM LIGNOCELLULOSIC MATERIAL.

Info

Publication number
ATE14762T1
ATE14762T1 AT82100102T AT82100102T ATE14762T1 AT E14762 T1 ATE14762 T1 AT E14762T1 AT 82100102 T AT82100102 T AT 82100102T AT 82100102 T AT82100102 T AT 82100102T AT E14762 T1 ATE14762 T1 AT E14762T1
Authority
AT
Austria
Prior art keywords
lignocellulosic material
cellulosic pulp
pulp made
pulp
improving washing
Prior art date
Application number
AT82100102T
Other languages
German (de)
Inventor
Jonas Arne Ingvar 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
Application granted granted Critical
Publication of ATE14762T1 publication Critical patent/ATE14762T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/40—Washing the fibres

Abstract

To provide a cleaner pulp and to obtain a higher chemical recovery during washing of chemically cooked and optionally defibrated cellulose pulp, the partially washed pulp is subjected to a mild mechanical treatment e.g. in a device (10) adapted for high-consistency treatment and provided with screwsrotating relative to each other, said treatment taking place between at least one pair of conventional washing stages (4,14).
AT82100102T 1981-01-14 1982-01-08 PROCESS FOR IMPROVING WASHING OF CELLULOSIC PULP MADE FROM LIGNOCELLULOSIC MATERIAL. ATE14762T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8100179A SE443383C (en) 1981-01-14 1981-01-14 PROCEDURE FOR WASHING CELLULOSAMASSA
EP82100102A EP0056263B1 (en) 1981-01-14 1982-01-08 A method for improving the washing of cellulose pulps produced from lignocellulosic material

Publications (1)

Publication Number Publication Date
ATE14762T1 true ATE14762T1 (en) 1985-08-15

Family

ID=20342871

Family Applications (1)

Application Number Title Priority Date Filing Date
AT82100102T ATE14762T1 (en) 1981-01-14 1982-01-08 PROCESS FOR IMPROVING WASHING OF CELLULOSIC PULP MADE FROM LIGNOCELLULOSIC MATERIAL.

Country Status (9)

Country Link
EP (1) EP0056263B1 (en)
JP (1) JPS57139591A (en)
AT (1) ATE14762T1 (en)
AU (1) AU548277B2 (en)
CA (1) CA1164704A (en)
DE (1) DE3265116D1 (en)
FI (1) FI69656C (en)
NO (1) NO160219C (en)
SE (1) SE443383C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036377A1 (en) * 2007-07-31 2009-02-05 Voith Patent Gmbh Use of washing and screw presses for raw material and pulp washing

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE445051B (en) * 1980-04-10 1986-05-26 Sca Development Ab SET FOR MANUFACTURING MECHANICAL, MAINLY HEART-FREE CELLULOSAMASSA
FI77063B (en) * 1986-12-17 1988-09-30 Ahlstroem Oy FOERFARANDE FOER EFFEKTIVERING AV FIBERSUSPENSIONSTVAETT.
FI81136C (en) * 1987-11-11 1990-09-10 Ahlstroem Oy Method and apparatus for treating pulp
US5554259A (en) 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
CA2402886C (en) 2000-03-14 2012-02-14 James Hardie Research Pty Limited Fiber cement building materials with low density additives
CN1246246C (en) 2000-10-04 2006-03-22 詹姆斯哈迪国际财金公司 Fiber cement composition materials using cellulose fibers loaded with inorganic and/or organic substances
EP1330571B1 (en) * 2000-10-17 2006-04-19 James Hardie International Finance B.V. Method of manufacturing a fiber reinforced cement composite material, a composite building material and a material formulation
EP1574614B1 (en) 2000-10-17 2015-11-11 James Hardie Technology Limited Method for reducing impurities in cellulose fibers for manufacture of fiber reinforced cement composite materials
JP4384411B2 (en) 2001-03-09 2009-12-16 ジェイムズ ハーディー インターナショナル ファイナンス ベスローテン フェンノートシャップ Fiber reinforced cement composites using chemically treated fibers with improved dispersibility
US7993570B2 (en) 2002-10-07 2011-08-09 James Hardie Technology Limited Durable medium-density fibre cement composite
NZ541250A (en) 2003-01-09 2008-09-26 James Hardie Int Finance Bv Fibre cement composite materials using bleached cellulose fibres
US7998571B2 (en) 2004-07-09 2011-08-16 James Hardie Technology Limited Composite cement article incorporating a powder coating and methods of making same
US8993462B2 (en) 2006-04-12 2015-03-31 James Hardie Technology Limited Surface sealed reinforced building element
US8209927B2 (en) 2007-12-20 2012-07-03 James Hardie Technology Limited Structural fiber cement building materials
SE538262C2 (en) * 2014-06-26 2016-04-19 Valmet Oy Arrangements for feeding and washing lignocellulosic material and two-stage analysis system comprising the arrangement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451963A1 (en) * 1979-03-22 1980-10-17 Creusot Loire PROCESS AND INSTALLATION FOR PREPARING AND WASHING A PAPER PULP FROM A LIGNOCELLULOSIC MATERIAL REDUCED IN PIECES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036377A1 (en) * 2007-07-31 2009-02-05 Voith Patent Gmbh Use of washing and screw presses for raw material and pulp washing

Also Published As

Publication number Publication date
FI69656C (en) 1991-12-24
AU548277B2 (en) 1985-12-05
SE443383B (en) 1986-02-24
SE443383C (en) 1987-07-14
EP0056263B1 (en) 1985-08-07
SE8100179L (en) 1982-07-15
FI69656B (en) 1985-11-29
AU7917582A (en) 1982-07-22
NO160219C (en) 1989-03-22
EP0056263A1 (en) 1982-07-21
DE3265116D1 (en) 1985-09-12
JPS57139591A (en) 1982-08-28
CA1164704A (en) 1984-04-03
FI820005L (en) 1982-07-15
NO820095L (en) 1982-07-15
JPS63557B2 (en) 1988-01-07
NO160219B (en) 1988-12-12

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee