GB191209503A - Improvements in Recovering Pulp from Waste Papers. - Google Patents

Improvements in Recovering Pulp from Waste Papers.

Info

Publication number
GB191209503A
GB191209503A GB191209503DA GB191209503A GB 191209503 A GB191209503 A GB 191209503A GB 191209503D A GB191209503D A GB 191209503DA GB 191209503 A GB191209503 A GB 191209503A
Authority
GB
United Kingdom
Prior art keywords
pulp
waste papers
washed
parts
solution
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
Inventor
John Michael Burby
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191209503A publication Critical patent/GB191209503A/en
Expired legal-status Critical Current

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
    • D21C5/025—De-inking
    • D21C5/027—Chemicals therefor
    • 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

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Paper (AREA)

Abstract

9503. Burby, J. M. April 22. Pulp, preparation of. - In a process for recovering pulp from waste papers, in which the fibres of the mechanical wood pulp are recovered without being discoloured, the material, during or after pulping, is treated with a solution of not more than two parts of caustic soda or its equivalent of other alkalis, such as sodium and potassium carbonates, to 1000 parts of water heated to a temperature not above 150‹ F., then soaked and washed in fresh water. Sodium bicarbonate may be used at any temperature below boiling-point, or borax solution may be used boiling hot; or the waste papers may be boiled in borax solution and then pulped and washed. Ammonia may also be used.
GB191209503D 1912-04-22 1912-04-22 Improvements in Recovering Pulp from Waste Papers. Expired GB191209503A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191209503T 1912-04-22

Publications (1)

Publication Number Publication Date
GB191209503A true GB191209503A (en) 1913-01-09

Family

ID=32368088

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191209503D Expired GB191209503A (en) 1912-04-22 1912-04-22 Improvements in Recovering Pulp from Waste Papers.

Country Status (3)

Country Link
DE (1) DE312618C (en)
FR (1) FR444703A (en)
GB (1) GB191209503A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA553349A (en) * 1950-10-04 1958-02-18 C. Harris George Pulping process

Also Published As

Publication number Publication date
DE312618C (en) 1900-01-01
FR444703A (en) 1912-10-24

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