SE7901031L - PROCEDURE FOR RECOVERY OF HIGH VALUES - Google Patents

PROCEDURE FOR RECOVERY OF HIGH VALUES

Info

Publication number
SE7901031L
SE7901031L SE7901031A SE7901031A SE7901031L SE 7901031 L SE7901031 L SE 7901031L SE 7901031 A SE7901031 A SE 7901031A SE 7901031 A SE7901031 A SE 7901031A SE 7901031 L SE7901031 L SE 7901031L
Authority
SE
Sweden
Prior art keywords
paper
digested
recovery
procedure
high values
Prior art date
Application number
SE7901031A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE447493B (en
Inventor
L Pfalzer
S Fischer
E Mauer
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 SE7901031L publication Critical patent/SE7901031L/en
Publication of SE447493B publication Critical patent/SE447493B/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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • 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

Abstract

The invention concerns processing of high grade waste paper especially for printed waste paper containing wood and wet strength agents. In order to provide satisfactory digestion of such paper, it is digested under pressure in a digester at a temperature above 100 DEG C (preferably 110 to 140 DEG C) and at a density range from 20 to 50% under acid and/or alkaline conditions. The digested paper is then diluted and mixed with flotation chemicals. This may be followed by a two stage flotation process.
SE7901031A 1978-02-09 1979-02-06 PROCEDURE FOR PREPARING HIGH QUALITY RECOVERY PAPER BY COOKING SE447493B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2805445A DE2805445C2 (en) 1978-02-09 1978-02-09 Process for recycling high quality waste paper

Publications (2)

Publication Number Publication Date
SE7901031L true SE7901031L (en) 1979-08-10
SE447493B SE447493B (en) 1986-11-17

Family

ID=6031530

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7901031A SE447493B (en) 1978-02-09 1979-02-06 PROCEDURE FOR PREPARING HIGH QUALITY RECOVERY PAPER BY COOKING

Country Status (8)

Country Link
AT (1) AT367116B (en)
DE (1) DE2805445C2 (en)
ES (1) ES477183A1 (en)
FI (1) FI68094C (en)
FR (1) FR2416975A1 (en)
GB (1) GB2014209B (en)
IT (1) IT1110272B (en)
SE (1) SE447493B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2947862C2 (en) * 1979-11-28 1982-04-01 J.M. Voith Gmbh, 7920 Heidenheim Process and plant for the production of a pulp suspension from waste paper
DE3305131A1 (en) * 1983-02-15 1984-08-16 Degussa Ag, 6000 Frankfurt METHOD FOR REMOVING WASTE PAPER
US5211809A (en) * 1991-05-21 1993-05-18 Air Products And Chemicals, Inc,. Dye removal in oxygen color stripping of secondary fibers
SE501309C2 (en) * 1993-05-28 1995-01-09 Klippans Finpappersbruk Ab Pulp production by digestion of a mixture of cellulose-based recycled material and raw wood
US6001218A (en) 1994-06-29 1999-12-14 Kimberly-Clark Worldwide, Inc. Production of soft paper products from old newspaper
US6074527A (en) 1994-06-29 2000-06-13 Kimberly-Clark Worldwide, Inc. Production of soft paper products from coarse cellulosic fibers
US6296736B1 (en) 1997-10-30 2001-10-02 Kimberly-Clark Worldwide, Inc. Process for modifying pulp from recycled newspapers
US6387210B1 (en) 1998-09-30 2002-05-14 Kimberly-Clark Worldwide, Inc. Method of making sanitary paper product from coarse fibers

Also Published As

Publication number Publication date
IT1110272B (en) 1985-12-23
IT7919954A0 (en) 1979-02-07
FI68094C (en) 1985-07-10
GB2014209B (en) 1983-01-12
SE447493B (en) 1986-11-17
DE2805445B1 (en) 1978-09-28
ATA867778A (en) 1981-10-15
GB2014209A (en) 1979-08-22
FR2416975A1 (en) 1979-09-07
DE2805445C2 (en) 1979-06-07
FR2416975B3 (en) 1981-12-11
FI68094B (en) 1985-03-29
AT367116B (en) 1982-06-11
FI790414A (en) 1979-08-10
ES477183A1 (en) 1979-07-16

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