FI991366A - Process for processing mechanical masses - Google Patents

Process for processing mechanical masses Download PDF

Info

Publication number
FI991366A
FI991366A FI991366A FI991366A FI991366A FI 991366 A FI991366 A FI 991366A FI 991366 A FI991366 A FI 991366A FI 991366 A FI991366 A FI 991366A FI 991366 A FI991366 A FI 991366A
Authority
FI
Finland
Prior art keywords
processing mechanical
mechanical masses
pulp
masses
processing
Prior art date
Application number
FI991366A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI107545B (en
FI991366A0 (en
Inventor
Jukka Jaekaerae
Aarto Paren
Original Assignee
Kemira Chemicals 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 Kemira Chemicals Oy filed Critical Kemira Chemicals Oy
Publication of FI991366A0 publication Critical patent/FI991366A0/en
Priority to FI991366A priority Critical patent/FI107545B/en
Priority to ES00936926T priority patent/ES2193085T3/en
Priority to CA002374673A priority patent/CA2374673A1/en
Priority to AU52245/00A priority patent/AU5224500A/en
Priority to DE60002613T priority patent/DE60002613T2/en
Priority to PCT/FI2000/000532 priority patent/WO2000077301A1/en
Priority to EP00936926A priority patent/EP1244851B1/en
Priority to AT00936926T priority patent/ATE239828T1/en
Publication of FI991366A publication Critical patent/FI991366A/en
Application granted granted Critical
Publication of FI107545B publication Critical patent/FI107545B/en
Priority to NO20016083A priority patent/NO20016083L/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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment

Abstract

The invention relates to a method for treating mechanical pulp so that aliphatic percarboxylic acid in the amount of 0.5 - 5 kg/ton of pulp is added to the pulp to improve the opacity.
FI991366A 1999-06-15 1999-06-15 Process for processing mechanical masses FI107545B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FI991366A FI107545B (en) 1999-06-15 1999-06-15 Process for processing mechanical masses
DE60002613T DE60002613T2 (en) 1999-06-15 2000-06-14 METHOD FOR IMPROVING THE OPACITY OF MECHANICAL PULP BY USING ALIPHATIC PEROXIC ACIDS AND USING PEROXIC ACIDS TO IMPROVE OPACITY
CA002374673A CA2374673A1 (en) 1999-06-15 2000-06-14 Method to improve the opacity of mechanical pulp by using aliphatic peroxyacids and use of peroxyacids to improve opacity
AU52245/00A AU5224500A (en) 1999-06-15 2000-06-14 Method to improve the opacity of mechanical pulp by using aliphatic peroxyacids and use of peroxyacids to improve opacity
ES00936926T ES2193085T3 (en) 1999-06-15 2000-06-14 PROCEDURE TO IMPROVE THE OPACITY OF THE MECHANICAL PASTE USING ALIFATIC PEROXIACIDES AND USE OF PEROXIACIDES TO IMPROVE THE OPACITY.
PCT/FI2000/000532 WO2000077301A1 (en) 1999-06-15 2000-06-14 Method to improve the opacity of mechanical pulp by using aliphatic peroxyacids and use of peroxyacids to improve opacity
EP00936926A EP1244851B1 (en) 1999-06-15 2000-06-14 Method to improve the opacity of mechanical pulp by using aliphatic peroxyacids and use of peroxyacids to improve opacity
AT00936926T ATE239828T1 (en) 1999-06-15 2000-06-14 METHOD FOR IMPROVING THE OPACITY OF MECHANICAL PULP BY USING ALIPHATIC PEROXY ACIDS AND USE OF PEROXY ACIDS TO IMPROVE OPACITY
NO20016083A NO20016083L (en) 1999-06-15 2001-12-13 Process for Improving Opacity of Wood Pulp Using Aliphatic Peroxic Acids and Using Peroxic Acids to Improve Opacity

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI991366A FI107545B (en) 1999-06-15 1999-06-15 Process for processing mechanical masses
FI991366 1999-06-15

Publications (3)

Publication Number Publication Date
FI991366A0 FI991366A0 (en) 1999-06-15
FI991366A true FI991366A (en) 2000-12-16
FI107545B FI107545B (en) 2001-08-31

Family

ID=8554886

Family Applications (1)

Application Number Title Priority Date Filing Date
FI991366A FI107545B (en) 1999-06-15 1999-06-15 Process for processing mechanical masses

Country Status (9)

Country Link
EP (1) EP1244851B1 (en)
AT (1) ATE239828T1 (en)
AU (1) AU5224500A (en)
CA (1) CA2374673A1 (en)
DE (1) DE60002613T2 (en)
ES (1) ES2193085T3 (en)
FI (1) FI107545B (en)
NO (1) NO20016083L (en)
WO (1) WO2000077301A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111745B (en) 2001-12-19 2003-09-15 Kemira Chemicals Oy Improved board manufacturing process
GB2391011A (en) * 2002-07-19 2004-01-28 Crosmill Ltd Bleaching cellulose suspensions
BRPI0822970B1 (en) 2008-07-30 2020-10-06 Micro Motion, Inc SIGNAL PROCESSOR, BUS CIRCUIT SYSTEM, AND METHOD FOR TRANSMITTING SIGNS FROM AN ANALOG SIGNAL GENERATOR TO AN ANALOG SIGNAL RECEIVER
FI127444B (en) * 2015-05-27 2018-06-15 Kemira Oyj Method for reducing pulp viscosity in production of dissolving pulp
FI127996B (en) * 2016-07-01 2019-07-15 Kemira Oyj A process for treating pulp
WO2019048698A1 (en) * 2017-09-11 2019-03-14 Kemira Oyj Process for treating pulp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1119546A (en) * 1965-03-01 1968-07-10 Paper Chemistry Inst Improved method of treating fibrous material
US5589032A (en) * 1992-09-21 1996-12-31 North Carolina State University Process for preparing a bleaching liquor containing percarboxylic acid and caro's acid
AU4271596A (en) * 1995-12-19 1997-07-14 Kvaerner Hymac Inc. Process for treating refiner pulp

Also Published As

Publication number Publication date
EP1244851B1 (en) 2003-05-07
FI107545B (en) 2001-08-31
DE60002613D1 (en) 2003-06-12
AU5224500A (en) 2001-01-02
NO20016083D0 (en) 2001-12-13
CA2374673A1 (en) 2000-12-21
NO20016083L (en) 2002-02-14
ATE239828T1 (en) 2003-05-15
EP1244851A1 (en) 2002-10-02
DE60002613T2 (en) 2003-11-27
WO2000077301A1 (en) 2000-12-21
FI991366A0 (en) 1999-06-15
ES2193085T3 (en) 2003-11-01

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