HK1020077A1 - Magnetic deinking of waste papers - Google Patents

Magnetic deinking of waste papers

Info

Publication number
HK1020077A1
HK1020077A1 HK99105283A HK99105283A HK1020077A1 HK 1020077 A1 HK1020077 A1 HK 1020077A1 HK 99105283 A HK99105283 A HK 99105283A HK 99105283 A HK99105283 A HK 99105283A HK 1020077 A1 HK1020077 A1 HK 1020077A1
Authority
HK
Hong Kong
Prior art keywords
magnetic
waste paper
pulp
removal
little
Prior art date
Application number
HK99105283A
Other languages
English (en)
Inventor
Nipun Marwah
Allen A Gold
Original Assignee
Westvaco Corp
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 Westvaco Corp filed Critical Westvaco Corp
Publication of HK1020077A1 publication Critical patent/HK1020077A1/xx

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
    • D21B1/04—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
    • D21B1/325—Defibrating by other means of waste paper de-inking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/005—Pretreatment specially adapted for magnetic separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/005—Pretreatment specially adapted for magnetic separation
    • B03C1/01—Pretreatment specially adapted for magnetic separation by addition of magnetic adjuvants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0332—Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0335—Component parts; Auxiliary operations characterised by the magnetic circuit using coils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/005—Forming fibrous aggregates
    • 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)
  • Developing Agents For Electrophotography (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Hard Magnetic Materials (AREA)
HK99105283A 1994-01-21 1999-11-16 Magnetic deinking of waste papers HK1020077A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US18374694A 1994-01-21 1994-01-21
US08/238,478 US5527426A (en) 1994-01-21 1994-05-05 Magnetic deinking of waste papers
PCT/US1996/002688 WO1997033036A1 (en) 1994-01-21 1996-03-08 Magnetic deinking of waste papers
CA 2248131 CA2248131A1 (en) 1994-01-21 1996-03-08 Magnetic deinking of waste papers

Publications (1)

Publication Number Publication Date
HK1020077A1 true HK1020077A1 (en) 2000-03-10

Family

ID=40547912

Family Applications (1)

Application Number Title Priority Date Filing Date
HK99105283A HK1020077A1 (en) 1994-01-21 1999-11-16 Magnetic deinking of waste papers

Country Status (10)

Country Link
US (1) US5527426A (es)
EP (1) EP0885325B1 (es)
JP (1) JP3171448B2 (es)
AT (1) ATE202809T1 (es)
CA (1) CA2248131A1 (es)
DE (1) DE69613721T2 (es)
DK (1) DK0885325T3 (es)
ES (1) ES2160813T3 (es)
HK (1) HK1020077A1 (es)
WO (1) WO1997033036A1 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685952A (en) * 1993-04-21 1997-11-11 Owen; David Malcolm Deinking of paper using magnetic forces
EP0869218A1 (en) * 1995-05-22 1998-10-07 Westvaco Corporation Magnetic removal of"stickies"from waste papers
US6245195B1 (en) * 1996-03-19 2001-06-12 Westvaco Corporation Decontamination of waste papers
US5997812A (en) 1996-06-20 1999-12-07 Coolant Treatment Systems, L.L.C. Methods and apparatus for the application of combined fields to disinfect fluids
US6006920A (en) * 1997-05-09 1999-12-28 Dry Branch Kaolin Company Brightness, reduced impurity clays and methods of making same
EP1217121A1 (en) * 2000-12-04 2002-06-26 Westvaco Corporation Decontamination of waste papers
US7217368B2 (en) * 2001-12-10 2007-05-15 Clearwater Systems Corporation Method and apparatus for liquid treatment with combined electronic and centrifugal processes to remove contaminants
WO2005019349A2 (en) * 2003-08-11 2005-03-03 Imerys Kaolin, Inc. High whiteness metakaolin and high whiteness fully calcined kaolin
US7169257B2 (en) * 2003-11-12 2007-01-30 Kemira Chemicals, Inc. Method of deinking waste paper using a reduced alkali system
US7381305B2 (en) * 2005-03-25 2008-06-03 The United States Of America As Represented By The Secretary Of Agriculture Method and apparatus for monitoring liquid and solid contents in a froth
US7981288B2 (en) * 2005-11-21 2011-07-19 Evapco, Inc. Pulse resonating device
JP5342479B2 (ja) * 2010-03-15 2013-11-13 合資会社オリエンタル 文書細断屑用古紙再生装置
WO2017011726A1 (en) * 2015-07-15 2017-01-19 Kimberly-Clark Worldwide, Inc. Method for clean fiber recovery from contaminated articles involving the addition of magnetic particles
CN111148574B (zh) 2017-07-25 2023-04-21 麦格诺莫有限责任公司 用于可磁化塑料的方法和组合物
CN107938412A (zh) * 2017-11-21 2018-04-20 常州思宇环保材料科技有限公司 一种高效废纸脱墨装置及其应用方法

Family Cites Families (42)

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Publication number Priority date Publication date Assignee Title
US4013505A (en) * 1972-03-09 1977-03-22 Vyzkumny Ustav Papieru A Celulosy Method of deinking printed wastepapers
US4147616A (en) * 1972-03-09 1979-04-03 Vyskumny Ustav Papieru A Celulosy Of Bratislava Apparatus for deinking printed wastepapers
US4076578A (en) * 1974-10-21 1978-02-28 Canadian Patents And Development Limited Ink removal from waste paper
SE399574C (sv) * 1974-12-05 1982-07-05 Moelnlycke Ab Sett for framstellning av fluffmassa
US4203376A (en) * 1976-12-21 1980-05-20 Refuse Derived Fuels (London) Limited Treatment of waste
US4176054A (en) * 1977-05-16 1979-11-27 Kelley Joseph A Waste paper recycling
DE2750191C3 (de) * 1977-11-10 1981-04-23 J.M. Voith Gmbh, 7920 Heidenheim Vorrichtung zur Aufbereitung von Altpapier
US4440635A (en) * 1979-03-29 1984-04-03 Haigh M. Reiniger Process and apparatus for the recovery of cellulose fibers from paper-plastic mixtures
US4318804A (en) * 1979-11-16 1982-03-09 Kanetsu Kogyo Kabushiki Kaisha Device for separating mixture
FR2482989A1 (fr) * 1980-05-22 1981-11-27 Interox Procede pour la regeneration de vieux papiers
JPS583073A (ja) * 1981-06-30 1983-01-08 Fujitsu Ltd バ−コ−ド読取方式
IT1155310B (it) * 1982-04-19 1987-01-28 Jean Marie Clement Procedimento per il trattamento di riciclaggio di carta stampata da macero
US4561933A (en) * 1983-10-17 1985-12-31 Shell Oil Company Xerographics deinking
EP0204860B1 (en) * 1985-06-13 1989-01-25 Ibm Deutschland Gmbh Methods and arrangements for characterizing magnetic coating compositions as well as improving magnetic particle dispersions
US4820379A (en) * 1986-10-16 1989-04-11 Ppg Industries, Inc. Method for deinking wastepaper with a halogenated polyethylene oxide and a polymeric material
US5102500A (en) * 1986-10-16 1992-04-07 Ppg Industries, Inc. Method for deinking wastepaper using alkoxy capped polyethylene oxide and a polymeric material
FR2612212B1 (fr) * 1987-03-13 1990-06-29 Centre Tech Ind Papier Procede et installation pour le recyclage de vieux papiers imprimes
JPS6456156A (en) * 1987-08-26 1989-03-03 Meiwa Seishi Genryo Kk Separation and recovering method for paper pulp component from magnetic recording paper and device used therefor
US5004664A (en) * 1989-02-27 1991-04-02 Xerox Corporation Toner and developer compositions containing biodegradable semicrystalline polyesters
US4974781A (en) * 1989-03-09 1990-12-04 The Placzek Family Trust Method and apparatus for preparing paper-containing and plastic-containing waste materials for component fraction separation
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US5213661A (en) * 1991-05-21 1993-05-25 Air Products And Chemicals, Inc. Oxygen alkali detackification in secondary fiber recovery
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US5238538A (en) * 1991-11-25 1993-08-24 Georgia Tech Research Corporation Method for deinking recycled fiber by applying direct current electric field
US5225046A (en) * 1992-02-26 1993-07-06 Shell Oil Company Wastepaper deinking process
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Also Published As

Publication number Publication date
ES2160813T3 (es) 2001-11-16
JP3171448B2 (ja) 2001-05-28
ATE202809T1 (de) 2001-07-15
US5527426A (en) 1996-06-18
DE69613721T2 (de) 2002-05-16
DE69613721D1 (de) 2001-08-09
DK0885325T3 (da) 2001-09-24
EP0885325A1 (en) 1998-12-23
CA2248131A1 (en) 1997-09-12
WO1997033036A1 (en) 1997-09-12
EP0885325B1 (en) 2001-07-04

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20060308