GB890147A - Separation by flotation - Google Patents

Separation by flotation

Info

Publication number
GB890147A
GB890147A GB860960A GB860960A GB890147A GB 890147 A GB890147 A GB 890147A GB 860960 A GB860960 A GB 860960A GB 860960 A GB860960 A GB 860960A GB 890147 A GB890147 A GB 890147A
Authority
GB
United Kingdom
Prior art keywords
duct
suspension
impeller wheel
flotation
cell
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
GB860960A
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
Priority claimed from DEV16163A external-priority patent/DE1177465B/en
Priority claimed from DEV16792A external-priority patent/DE1155968B/en
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Publication of GB890147A publication Critical patent/GB890147A/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
    • B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
    • 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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1462—Discharge mechanisms for the froth
    • 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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1475—Flotation tanks having means for discharging the pulp, e.g. as a bleed stream
    • 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
    • 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
    • B03D1/24—Pneumatic
    • B03D1/242—Nozzles for injecting gas into the flotation tank
    • 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)

Abstract

890,147. Froth flotation apparatus. VOITH G.m.b.H., J. M. March 11, 1960 [March 12, 1959; June 27, 1959], No. 8609/60. Class 82(2). [Also in Group VIII] In a flotation apparatus, e.g. for de-inking paper pulp, pulp suspension and air are drawn through ducts 6, 7, respectively, into a flotation cell 2 by an impeller wheel 5 located therein and ink-containing froth formed on the surface of the suspension in the cell 2 is skimmed off by a paddle 11 into a trough 12 whence it flows via a duct 14 to a collecting container (not shown) supplying a secondary flotation cell. De-inked suspension passes over an overflow 9 into a trough 10 whence it is drawn through a duct 13 into another secondary flotation cell. The impeller wheel 5 (Fig. 2) is driven through a shaft 18 by a variable speed motor 20. The duct 6 connects with a spiral housing 21, or an arrangement of inlet guide plates (not shown), whereby a spinning flow is imparted to the pump suspension in a direction similar to the rotation of the impeller wheel 5, which is surrounded by a perforated cylindrical screen 24, topped by a cover plate 25 to distribute and divide air bubbles from the duct 7. Partitions 28 prevent swirling of the pulp suspension in the tank 2, the side walls of which may be converged towards the paddle 11.
GB860960A 1959-03-12 1960-03-11 Separation by flotation Expired GB890147A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEV16163A DE1177465B (en) 1959-03-12 1959-03-12 Flotation machine
DEV16792A DE1155968B (en) 1959-06-27 1959-06-27 Flotation machine

Publications (1)

Publication Number Publication Date
GB890147A true GB890147A (en) 1962-02-28

Family

ID=26001347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB860960A Expired GB890147A (en) 1959-03-12 1960-03-11 Separation by flotation

Country Status (3)

Country Link
BE (1) BE588545A (en)
CH (1) CH388761A (en)
GB (1) GB890147A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105268561A (en) * 2015-10-31 2016-01-27 湖州佳思机械科技有限公司 Mineral flotation machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105268561A (en) * 2015-10-31 2016-01-27 湖州佳思机械科技有限公司 Mineral flotation machine

Also Published As

Publication number Publication date
BE588545A (en) 1960-07-01
CH388761A (en) 1965-02-28

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