GB1463776A - Processing waste paper - Google Patents

Processing waste paper

Info

Publication number
GB1463776A
GB1463776A GB660675A GB660675A GB1463776A GB 1463776 A GB1463776 A GB 1463776A GB 660675 A GB660675 A GB 660675A GB 660675 A GB660675 A GB 660675A GB 1463776 A GB1463776 A GB 1463776A
Authority
GB
United Kingdom
Prior art keywords
stock
hydrocyclone
passes
pulper
shearing stress
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.)
Expired
Application number
GB660675A
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.)
Sulzer Escher Wyss GmbH
Original Assignee
Escher Wyss GmbH
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 Escher Wyss GmbH filed Critical Escher Wyss GmbH
Publication of GB1463776A publication Critical patent/GB1463776A/en
Expired legal-status Critical Current

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
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/026—Separating fibrous materials from waste
    • 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)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

1463776 Pulping waste paper ESCHER WYSS GmbH 17 Feb 1975 [26 Feb 1974] 6606/75 Heading D2A [Also in Division B2] A stock obtained by pulping waste paper and containing less than 80% water is subject to an intensive mechanical shearing stress before separating foreign particles therefrom. Any aluminium foil or synthetic plastics foil present in the stock is rolled up cr curled as a result of the shearing stress applied thereto and forms compact granules which may be separated from the stock in a hydrocyclone or by screening. The curling may be assisted by heating the stock to a temperature at which the synthetic plastics material becomes plastic. In the embodiment shown, paper pulp from a stock pulper 21 passes to a second stock pulper 25 from which the good stock passes to a screening press 29, a heating screw 30 to which superheated steam is supplied and a dispersing apparatus 32. The latter is provided with a rotor and a stator with intermeshing teeth and subjects the stock to an intensive shearing stress. From the apparatus 32 the stock passes to a container 33 where it is diluted, a screening device 35 and a hydrocyclone 37. In another embodiment (not shown) the second stock pulper 25 is replaced by a hydrocyclone (5) and a deflaker (7).
GB660675A 1974-02-26 1975-02-17 Processing waste paper Expired GB1463776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH266874A CH574538A5 (en) 1974-02-26 1974-02-26

Publications (1)

Publication Number Publication Date
GB1463776A true GB1463776A (en) 1977-02-09

Family

ID=4238879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB660675A Expired GB1463776A (en) 1974-02-26 1975-02-17 Processing waste paper

Country Status (6)

Country Link
AT (1) AT346170B (en)
CH (1) CH574538A5 (en)
DE (1) DE2413278A1 (en)
FI (1) FI54937C (en)
GB (1) GB1463776A (en)
SE (1) SE417623B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177129A (en) * 1985-06-22 1987-01-14 Voith Gmbh J M Method and apparatus for treating waste paper
USRE36424E (en) * 1982-04-19 1999-12-07 Clement; Jean-Marie Method for producing pulp from printed unselected waste paper

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2514162B2 (en) * 1975-03-29 1977-02-03 Anlage zur Aufbereitung von Altpapier J.M. Voith GmbH, 7920 Heidenheim PLANT FOR THE PROCESSING OF WASTE PAPER
CS201120B1 (en) * 1976-07-27 1980-10-31 Svetozar Vagac Method of and apparatus for reclaiming individual components of papermaking combined waste materials
CA1093880A (en) * 1977-07-08 1981-01-20 Heikki Mamers Recovery of cellulosic fibres from foil laminated materials
CS205557B1 (en) * 1978-10-26 1981-05-29 Svetozar Vagac Low-grade waste paper processing plant
AT384836B (en) * 1979-11-15 1988-01-11 Escher Wyss Gmbh METHOD AND SYSTEM FOR PROCESSING WASTE PAPER
CH649330A5 (en) * 1980-11-25 1985-05-15 Escher Wyss Gmbh Process for increasing the specific volume in the reprocessing of waste paper pulp
DE3114527C1 (en) * 1981-04-10 1982-10-14 J.M. Voith Gmbh, 7920 Heidenheim Process for the treatment of waste paper
AT378792B (en) * 1983-01-25 1985-09-25 Ferrometall Eisen Und Schrotth METHOD FOR RECOVERING THE INDIVIDUAL COMPONENTS MADE OF METAL FILM, ESPECIALLY ALUMINUM FILM, LAMINATED PAPER OR CARDBOARD
DE3510214A1 (en) * 1985-03-21 1986-09-25 J.M. Voith Gmbh, 7920 Heidenheim METHOD FOR PROCESSING WASTE PAPER
US5518580A (en) * 1991-09-20 1996-05-21 J.M. Voith Gmbh Method of processing printed waste matter
DE4133683A1 (en) * 1991-09-20 1993-03-25 Voith Gmbh J M METHOD FOR PROCESSING PRINTED WASTE PAPER
US5501768A (en) * 1992-04-17 1996-03-26 Kimberly-Clark Corporation Method of treating papermaking fibers for making tissue
US5348620A (en) * 1992-04-17 1994-09-20 Kimberly-Clark Corporation Method of treating papermaking fibers for making tissue
DE4233286A1 (en) * 1992-10-02 1994-04-07 Voith Gmbh J M Process for the treatment of printed waste paper
SE506804C2 (en) 1996-06-24 1998-02-16 Cellwood Machinery Ab Methods and plant for recycling various components in multilayer material
DE19712652C1 (en) * 1997-03-26 1998-09-24 Voith Sulzer Stoffaufbereitung Preparation of used paper fibres for recycling
DE19938976A1 (en) * 1999-08-17 2001-03-01 Voith Sulzer Papiertech Patent Process for the preparation of a paper fiber raw material containing wood pulp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE36424E (en) * 1982-04-19 1999-12-07 Clement; Jean-Marie Method for producing pulp from printed unselected waste paper
GB2177129A (en) * 1985-06-22 1987-01-14 Voith Gmbh J M Method and apparatus for treating waste paper

Also Published As

Publication number Publication date
CH574538A5 (en) 1976-04-15
FI54937B (en) 1978-12-29
DE2413278A1 (en) 1975-09-11
ATA170074A (en) 1976-01-15
SE417623B (en) 1981-03-30
AT346170B (en) 1978-10-25
SE7502047L (en) 1975-08-27
FI375274A (en) 1975-08-27
FI54937C (en) 1979-04-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee