GB364756A - Process for the production of clean paper pulp from old printed paper - Google Patents

Process for the production of clean paper pulp from old printed paper

Info

Publication number
GB364756A
GB364756A GB3455730A GB3455730A GB364756A GB 364756 A GB364756 A GB 364756A GB 3455730 A GB3455730 A GB 3455730A GB 3455730 A GB3455730 A GB 3455730A GB 364756 A GB364756 A GB 364756A
Authority
GB
United Kingdom
Prior art keywords
pulp
causticizing
sludge
paper
carnallite
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
GB3455730A
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
Publication of GB364756A publication Critical patent/GB364756A/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)
  • Treatment Of Sludge (AREA)

Abstract

364,756. Re covering clean pulp from old paper. WEBER, R., Drentwede, Bremen, Germany. Nov. 17, 1930, No. 34557. Convention date, Nov. 18, 1929. [Class 96.] Clean paper pulp is recovered from old printed paper by a cold process by treating with causticizing sludge, obtained as a waste product in the causticizing of soda, the pulp then being washed ; carnallite waste iquors may be added to the causticizing sludge, and the causticizing sludge or the carnallite liquor may be prepared from its constituents. The sludge may be obtained in the causticizing of pure sodium carbonate or in the causticizing of the residue obtained by evaporating and igniting the boiling liquors used in the manufacture of soda pulp or sulphate pulp. When carnallite waste liquor is added, magnesium hydroxide is formed, the colloidal nature of which assists removal of the printer's ink. In an example, 1000 kg. of old printed paper is disintegrated in a Hollander and 300-500 litres causticizing sludge added. After 1-2 hours the pulp is washed, preferably by means of a washing drum which revolves in the pulp and is covered with a fine sieve.
GB3455730A 1929-11-18 1930-11-17 Process for the production of clean paper pulp from old printed paper Expired GB364756A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0084219 1929-11-18

Publications (1)

Publication Number Publication Date
GB364756A true GB364756A (en) 1932-01-14

Family

ID=7611892

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3455730A Expired GB364756A (en) 1929-11-18 1930-11-17 Process for the production of clean paper pulp from old printed paper

Country Status (6)

Country Link
US (1) US1919140A (en)
BE (1) BE374896A (en)
DE (1) DE593427C (en)
FR (1) FR705385A (en)
GB (1) GB364756A (en)
NL (1) NL33081C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360512A (en) * 1989-03-15 1994-11-01 Woodfree Limited Method and product for treating waste paper material

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747716C (en) * 1937-01-27 1944-10-11 Hans Fehn Process for regenerating printing paper
US5882476A (en) * 1995-05-05 1999-03-16 Solvay Minerals, Inc. Deinking printed wastepaper using alkaline solution containing sodium sulfite and sodium carbonate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360512A (en) * 1989-03-15 1994-11-01 Woodfree Limited Method and product for treating waste paper material

Also Published As

Publication number Publication date
FR705385A (en) 1931-06-05
DE593427C (en) 1934-02-26
US1919140A (en) 1933-07-18
NL33081C (en) 1900-01-01
BE374896A (en) 1900-01-01

Similar Documents

Publication Publication Date Title
GB441331A (en) Process for de-inking imprinted paper
GB1325505A (en) Method for reclaiming pulp from waste papers
GB364756A (en) Process for the production of clean paper pulp from old printed paper
GB381697A (en) Method of relieving alkaline waste liquors from the soda or sulphate pulp manufacture, of silica
US1605927A (en) Sodium-monosulphite waste-liquor-recovery process
US3453174A (en) Pulping and bleaching process wherein effluent liquor from alkaline extraction of bleached pulp is used to dissolve smelt
US1137860A (en) Process of treating aluminate solutions.
GB400415A (en) Improvements in or relating to the recovery of pulp from waste paper
US1587679A (en) Process of recovering calcium carbonate from caustic liquors
US1992977A (en) Method of removing bleachable pigments from paper containing ligno-cellulosic constituents
GB1423253A (en) Process for the manufacture of a paper fluting or cardboard and products manufactured by the process
US1572478A (en) Process for reclaiming used paper
US1879503A (en) Method of relieving alkaline solutions, particularly waste liquors from the soda or sulphate pulp manufacture, of silica
JPS6036329A (en) Treatment of liquid used for causticization cycle of craft process
GB269909A (en) Improvements in or relating to treating residual liquors accruing from the treatment of cellulose material
GB265697A (en) Process for the production of cellulosic material
US2042465A (en) Process for deinking paper printed with oxidizable inks
GB427894A (en) Improvements in or relating to the recovery of organic constituents present in blackliquor in making paper by the caustic soda process
NO853753L (en) PROCESS Utilizing Lime Slurry in the Custody Cycle of the KR AFT PROCESS.
GB448582A (en) Refining cellulose fiber for conversion into cellulose derivatives
US1660696A (en) Process of producing cellulose and other chemical products
US1626171A (en) Process for cooking vegetable fiber
DE523864C (en) Process for the production of a pure paper stock from printed waste paper
US1511664A (en) Process of making fiber for paper, etc
US1711584A (en) Process for the production of chemical wood pulp