CH617478A5 - Method of controlling the acidity and water hardness in paper production - Google Patents

Method of controlling the acidity and water hardness in paper production Download PDF

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Publication number
CH617478A5
CH617478A5 CH273376A CH273376A CH617478A5 CH 617478 A5 CH617478 A5 CH 617478A5 CH 273376 A CH273376 A CH 273376A CH 273376 A CH273376 A CH 273376A CH 617478 A5 CH617478 A5 CH 617478A5
Authority
CH
Switzerland
Prior art keywords
alkali
paper
hexafluorosilicic acid
circulating water
acidity
Prior art date
Application number
CH273376A
Other languages
German (de)
English (en)
Inventor
Josef Varka
Original Assignee
Pelzer & Roehrl
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 Pelzer & Roehrl filed Critical Pelzer & Roehrl
Publication of CH617478A5 publication Critical patent/CH617478A5/de

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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • 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

  • Paper (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
CH273376A 1975-03-13 1976-03-04 Method of controlling the acidity and water hardness in paper production CH617478A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752510975 DE2510975A1 (de) 1975-03-13 1975-03-13 Verfahren zur regelung der aziditaet und der wasserhaerte bei der papierproduktion

Publications (1)

Publication Number Publication Date
CH617478A5 true CH617478A5 (en) 1980-05-30

Family

ID=5941281

Family Applications (1)

Application Number Title Priority Date Filing Date
CH273376A CH617478A5 (en) 1975-03-13 1976-03-04 Method of controlling the acidity and water hardness in paper production

Country Status (4)

Country Link
AT (1) AT358386B (fr)
CH (1) CH617478A5 (fr)
DE (1) DE2510975A1 (fr)
FR (1) FR2303895A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT394741B (de) * 1991-03-08 1992-06-10 Sprout Waldron & Co Ag Verfahren zur herstellung von produkten aus lignozellulosefasern

Also Published As

Publication number Publication date
FR2303895A1 (fr) 1976-10-08
DE2510975A1 (de) 1976-09-30
FR2303895B1 (fr) 1978-10-27
AT358386B (de) 1980-09-10
ATA62076A (de) 1980-01-15

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Legal Events

Date Code Title Description
PL Patent ceased