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CA2207963A1 - Separation of cellulosic and non-cellulosic fractions from paper products - Google Patents

Separation of cellulosic and non-cellulosic fractions from paper products

Info

Publication number
CA2207963A1
CA2207963A1 CA2207963A CA2207963A CA2207963A1 CA 2207963 A1 CA2207963 A1 CA 2207963A1 CA 2207963 A CA2207963 A CA 2207963A CA 2207963 A CA2207963 A CA 2207963A CA 2207963 A1 CA2207963 A1 CA 2207963A1
Authority
CA
Canada
Prior art keywords
cellulosic
vessel
separation
aqueous solution
paper product
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.)
Granted
Application number
CA2207963A
Other languages
French (fr)
Other versions
CA2207963C (en
Inventor
Marlene Elizabeth Conway
Scott Anthony Martin
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.)
Knowaste LLC USA
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
Priority claimed from GB9425665A external-priority patent/GB9425665D0/en
Application filed by Individual filed Critical Individual
Publication of CA2207963A1 publication Critical patent/CA2207963A1/en
Application granted granted Critical
Publication of CA2207963C publication Critical patent/CA2207963C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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

  • Processing Of Solid Wastes (AREA)
  • Paper (AREA)

Abstract

A process (1) for the separation of cellulosic fibres from non-cellulosic fractions in paper product is disclosed. The paper product comprises cellulosic fibres and at least one of thermoplastic polymer and metallic foil.
The process (1) comprises vigorously admixing paper product in aqueous solution (3) in a vessel (2), the paper product being in a comminuted form and the vessel (2) being such that the solution (3) has a surface (11) within the vessel (2). The admixing is such that it is effective for at least partial separation of cellulosic fibres from thermoplastic polymer and metallic foil and to form a suspension of cellulosic fibres so separated in the aqueous solution (3). A fraction (13) comprised of thermoplastic polymer and/or metallic foil is separated from the surface (11) of the aqueous solution (3) in the vessel (2). The separation is carried out by using a bucket conveyer (6) extending below the surface (11) of the aqueous solution (3) and discharging the fraction (13) outside of said vessel (2). The process is useful for separating coated paperboard into its components, e.g. for recycling of beverage containers.
CA 2207963 1994-12-20 1995-12-15 Separation of cellulosic and non-cellulosic fractions from paper products Expired - Fee Related CA2207963C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9425665A GB9425665D0 (en) 1994-12-20 1994-12-20 Separation of cellulosic and non-cellulosic fractions from paper products
GB9425665.8 1994-12-20
PCT/CA1995/000701 WO1996019612A1 (en) 1994-12-20 1995-12-15 Separation of cellulosic and non-cellulosic fractions from paper products

Publications (2)

Publication Number Publication Date
CA2207963A1 true CA2207963A1 (en) 1996-06-27
CA2207963C CA2207963C (en) 1999-06-01

Family

ID=29550752

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2207963 Expired - Fee Related CA2207963C (en) 1994-12-20 1995-12-15 Separation of cellulosic and non-cellulosic fractions from paper products

Country Status (1)

Country Link
CA (1) CA2207963C (en)

Also Published As

Publication number Publication date
CA2207963C (en) 1999-06-01

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Legal Events

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