NO301780B1 - Method and apparatus for processing the recycled paper - Google Patents

Method and apparatus for processing the recycled paper

Info

Publication number
NO301780B1
NO301780B1 NO933518A NO933518A NO301780B1 NO 301780 B1 NO301780 B1 NO 301780B1 NO 933518 A NO933518 A NO 933518A NO 933518 A NO933518 A NO 933518A NO 301780 B1 NO301780 B1 NO 301780B1
Authority
NO
Norway
Prior art keywords
defibration
waste paper
shaped
kneading
bleaching
Prior art date
Application number
NO933518A
Other languages
Norwegian (no)
Other versions
NO933518D0 (en
NO933518L (en
Inventor
Herbert Ortner
Hans-Dieter Doerflinger
Original Assignee
Voith Gmbh J M
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 Voith Gmbh J M filed Critical Voith Gmbh J M
Publication of NO933518D0 publication Critical patent/NO933518D0/en
Publication of NO933518L publication Critical patent/NO933518L/en
Publication of NO301780B1 publication Critical patent/NO301780B1/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
    • D21B1/30—Defibrating by other means
    • D21B1/32—Defibrating by other means of waste paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)

Abstract

The invention relates to a process for treating printed waste paper, in particular waste paper which contains at least 80% of newspapers or magazines, by disintegration, various purification stages, flotation or washing and defibration, the latter at a high consistency of at least 20%, and bleaching if necessary. The invention is characterised in that a final second defibration stage, located upstream of a bleaching stage if any, is carried out by treatment of the waste paper with strong kneading action of singular, rod-shaped or block-shaped kneading elements of both the stator and rotor of the defibration machine, which are arranged in a kneading chamber thereof which is bounded by two concentric cylinder surfaces, at temperatures of between 20 and 110 DEG C, preferably 38 to 65 DEG C, and a specific energy consumption of between 30 and 100, preferably 80, kWh/tonne of dry matter. <IMAGE>
NO933518A 1992-10-02 1993-10-01 Method and apparatus for processing the recycled paper NO301780B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924233286 DE4233286A1 (en) 1992-10-02 1992-10-02 Process for the treatment of printed waste paper

Publications (3)

Publication Number Publication Date
NO933518D0 NO933518D0 (en) 1993-10-01
NO933518L NO933518L (en) 1994-04-05
NO301780B1 true NO301780B1 (en) 1997-12-08

Family

ID=6469555

Family Applications (1)

Application Number Title Priority Date Filing Date
NO933518A NO301780B1 (en) 1992-10-02 1993-10-01 Method and apparatus for processing the recycled paper

Country Status (6)

Country Link
EP (1) EP0590626B1 (en)
JP (1) JPH06192983A (en)
AT (1) ATE134398T1 (en)
DE (2) DE4233286A1 (en)
FI (1) FI934283A (en)
NO (1) NO301780B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19614947B4 (en) * 1996-04-16 2004-04-08 Voith Paper Fiber Systems Gmbh & Co. Kg Process for increasing the whiteness of paper pulp
DE19806734A1 (en) * 1998-01-23 1998-09-17 Voith Sulzer Papiertech Patent Flotation cleaning of fibre suspensions especially for processing used paper materials, for recycling
DE10018262A1 (en) * 2000-04-13 2001-10-18 Voith Paper Patent Gmbh Process for dispersing a paper pulp and plant for carrying out the process

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1477336A (en) * 1965-04-27 1967-04-14 Chemische Ind Uithoorn N V Process for making paper from waste paper
GB1429626A (en) * 1972-03-25 1976-03-24 Watford Eng Ltd Bulk material processing apparatus
CH574538A5 (en) * 1974-02-26 1976-04-15 Escher Wyss Gmbh
IT1155310B (en) * 1982-04-19 1987-01-28 Jean Marie Clement PROCESS FOR THE RECYCLING PROCESS OF PAPER PRINTED FROM MACERO
DE3827336A1 (en) * 1988-08-12 1990-02-15 Escher Wyss Gmbh METHOD FOR TREATING THE SHORT FIBER FRACTION AFTER SEPARATING THE LONG FIBER FRACTION FROM A SECONDARY FIBER MIXTURE, ESPECIALLY FOR THE PRODUCTION OF CARTON BOXES
IT1227995B (en) * 1989-01-27 1991-05-22 Comer Spa A S DEKINKING EQUIPMENT IN THE CONSTANT PART OF PAPER PRODUCTION PLANTS.
DE4133683A1 (en) * 1991-09-20 1993-03-25 Voith Gmbh J M METHOD FOR PROCESSING PRINTED WASTE PAPER

Also Published As

Publication number Publication date
DE4233286A1 (en) 1994-04-07
EP0590626B1 (en) 1996-02-21
JPH06192983A (en) 1994-07-12
EP0590626A1 (en) 1994-04-06
DE59301675D1 (en) 1996-03-28
ATE134398T1 (en) 1996-03-15
FI934283A (en) 1994-04-03
FI934283A0 (en) 1993-09-29
NO933518D0 (en) 1993-10-01
NO933518L (en) 1994-04-05

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Legal Events

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MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN APRIL 2001