GB2039763B - Aeration device for fibrous suspension - Google Patents

Aeration device for fibrous suspension

Info

Publication number
GB2039763B
GB2039763B GB7941373A GB7941373A GB2039763B GB 2039763 B GB2039763 B GB 2039763B GB 7941373 A GB7941373 A GB 7941373A GB 7941373 A GB7941373 A GB 7941373A GB 2039763 B GB2039763 B GB 2039763B
Authority
GB
United Kingdom
Prior art keywords
impeller
aeration device
suspension
outer ring
vanes
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
GB7941373A
Other versions
GB2039763A (en
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.)
JM Voith GmbH
Original Assignee
JM Voith GmbH
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 JM Voith GmbH filed Critical JM Voith GmbH
Publication of GB2039763A publication Critical patent/GB2039763A/en
Application granted granted Critical
Publication of GB2039763B publication Critical patent/GB2039763B/en
Expired legal-status Critical Current

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
    • D21B1/327—Defibrating by other means of waste paper de-inking devices using flotation 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/16—Flotation machines with impellers; Subaeration machines
    • B03D1/22—Flotation machines with impellers; Subaeration machines with external blowers
    • 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
    • D21F1/70—Pulp catching, de-watering, or recovering; Re-use of pulp-water by flotation
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

An aeration device for a flotation container (1) - e.g. for removing printing ink from waste paper suspension - has a centrifugal impeller (2) into the centre of which are fed the suspension and air. The impeller (1) is surrounded by stationary guide vane means (9) which form, in radial relationship to the impeller, an inner ring of guide vanes (10) inclined, in the direction of rotation of the impeller, away from the radial toward the tangential direction, and an outer ring of baffle vanes (11) inclined relative to the guide vanes (10) in a direction opposite to the rotation direction. A radially outer ring of baffle rods (12) may also be provided. <IMAGE>
GB7941373A 1978-12-01 1979-11-30 Aeration device for fibrous suspension Expired GB2039763B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2852023A DE2852023C2 (en) 1978-12-01 1978-12-01 Device for introducing a pulp suspension into a flotation tank

Publications (2)

Publication Number Publication Date
GB2039763A GB2039763A (en) 1980-08-20
GB2039763B true GB2039763B (en) 1982-11-10

Family

ID=6056081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7941373A Expired GB2039763B (en) 1978-12-01 1979-11-30 Aeration device for fibrous suspension

Country Status (9)

Country Link
JP (1) JPS5575750A (en)
AT (1) AT370794B (en)
DE (1) DE2852023C2 (en)
FI (1) FI793758A (en)
FR (1) FR2442663A1 (en)
GB (1) GB2039763B (en)
IT (1) IT1119511B (en)
NL (1) NL7908486A (en)
SE (1) SE7909747L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI83482C (en) * 1990-01-10 1991-07-25 Outokumpu Oy SAETTING OVER ANORDNING MATERIAL AV LUFT I FLOTATIONSCELL.
US5244097A (en) * 1990-01-10 1993-09-14 Outokumpu Oy Apparatus for feeding air into a flotation cell
DE19948176B4 (en) * 1999-10-07 2004-05-13 Voith Paper Patent Gmbh Flotation device for removing impurities, in particular printing ink, from paper fiber suspensions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5136201B2 (en) * 1972-03-18 1976-10-07
JPS4948604B2 (en) * 1972-10-11 1974-12-23

Also Published As

Publication number Publication date
GB2039763A (en) 1980-08-20
SE7909747L (en) 1980-06-02
FI793758A (en) 1980-06-02
JPS5575750A (en) 1980-06-07
DE2852023C2 (en) 1980-08-28
ATA629579A (en) 1982-09-15
FR2442663A1 (en) 1980-06-27
AT370794B (en) 1983-05-10
FR2442663B3 (en) 1981-08-28
DE2852023B1 (en) 1979-12-20
IT7969247A0 (en) 1979-11-20
NL7908486A (en) 1980-06-03
IT1119511B (en) 1986-03-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee