GB2130920B - A process and apparatus for the flotation of fibrous suspensions - Google Patents

A process and apparatus for the flotation of fibrous suspensions

Info

Publication number
GB2130920B
GB2130920B GB08330309A GB8330309A GB2130920B GB 2130920 B GB2130920 B GB 2130920B GB 08330309 A GB08330309 A GB 08330309A GB 8330309 A GB8330309 A GB 8330309A GB 2130920 B GB2130920 B GB 2130920B
Authority
GB
United Kingdom
Prior art keywords
flotation
flotation cell
suspension
injector
vicinity
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
GB08330309A
Other versions
GB2130920A (en
GB8330309D0 (en
Inventor
Peter Schweiss
Hans-Dieter Dorflinger
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 GB8330309D0 publication Critical patent/GB8330309D0/en
Publication of GB2130920A publication Critical patent/GB2130920A/en
Application granted granted Critical
Publication of GB2130920B publication Critical patent/GB2130920B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B03D1/1456—Feed mechanisms for the slurry
    • 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
    • B03D1/1468—Discharge mechanisms for the sediments
    • 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
    • B03D1/1493—Flotation machines with means for establishing a specified flow pattern
    • 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
    • B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type

Abstract

An injector is provided in each flotation cell via which the suspension is supplied in the vicinity of the base of each flotation cell. An upwards flow of the suspension occurs, during which flotation of the dirt particles takes place. In the vicinity of the base of each flotation cell some of the suspension is drawn off and is supplied again in the circuit to the injector of the flotation cell concerned. In this way the minimum average period of dwell for all the particles of each flotation cell is correspondingly longer and the overall flotation effect is correspondingly improved.
GB08330309A 1982-11-23 1983-11-14 A process and apparatus for the flotation of fibrous suspensions Expired GB2130920B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3243223A DE3243223C1 (en) 1982-11-23 1982-11-23 Process and device for flotation of fiber suspensions

Publications (3)

Publication Number Publication Date
GB8330309D0 GB8330309D0 (en) 1983-12-21
GB2130920A GB2130920A (en) 1984-06-13
GB2130920B true GB2130920B (en) 1986-04-03

Family

ID=6178775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08330309A Expired GB2130920B (en) 1982-11-23 1983-11-14 A process and apparatus for the flotation of fibrous suspensions

Country Status (6)

Country Link
AT (1) ATA354583A (en)
DE (1) DE3243223C1 (en)
FR (1) FR2536305A1 (en)
GB (1) GB2130920B (en)
IT (1) IT8323818A0 (en)
SE (1) SE8306441L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524071A1 (en) * 1985-07-05 1987-01-15 Erich Ing Grad Kurz Process and device for the flotation of fibre suspensions
DE19906327A1 (en) * 1999-02-16 2000-08-17 Voith Sulzer Papiertech Patent Process for removing impurities from an aqueous fiber suspension
AUPQ193499A0 (en) * 1999-07-30 1999-08-26 Teagan Pty Ltd Fibres/solids separating system
US7537674B1 (en) 2006-06-12 2009-05-26 Narayanasamy Seenivasan Closed floatation de-inking module for recycled paper
US7562777B1 (en) 2006-06-12 2009-07-21 Narayanasamy Seenivasan Flotation cell injector assembly for use with open or closed flotation deinking modules for recycled paper
US7544271B1 (en) 2006-06-12 2009-06-09 Narayanasamy Seenivasan Open flotation de-inking module for recycled paper
FI119998B (en) * 2007-04-05 2009-05-29 Metso Paper Inc Feeding of fiber suspension flow to flotation cell and flotation cell injector
FI119598B (en) 2007-04-05 2009-01-15 Metso Paper Inc Flotation cell injector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB717906A (en) * 1950-11-27 1954-11-03 Nat Coal Board An improved method of and apparatus for use in the recovery of coal from the water borne suspension of coal and dirt which forms the residual product in washing and screening coal and in the treatment of coal to reduce the ash content
NL273214A (en) * 1961-11-13
US3788478A (en) * 1971-08-19 1974-01-29 Shell Oil Co Waste water treatment
US4051204A (en) * 1973-12-21 1977-09-27 Hans Muller Apparatus for mixing a liquid phase and a gaseous phase
FR2397881A1 (en) * 1977-07-20 1979-02-16 Alsthom Atlantique Creation of micro-bubbles from the flotation sepn. of a suspension - with gas saturation chamber, cavitation zone and flotation chamber in which supersaturation occurs
GB2041788B (en) * 1978-08-21 1982-10-06 Feldmuehle Ag Method and device for cleaning suspension fibres
DE2946520A1 (en) * 1979-11-17 1981-06-11 Bedmor Beteiligungs- und Verwaltungsgesellschaft mbH, 2980 Norden INTEGRATED FLOTATION FILTRATION PLANT
DE3008476A1 (en) * 1980-03-05 1981-09-17 Bayer Ag, 5090 Leverkusen METHOD FOR FLOTATION AND USE OF FUNNEL NOZZLES FOR FLOTATION
DE8132689U1 (en) * 1981-11-07 1983-09-08 J.M. Voith Gmbh, 7920 Heidenheim INJECTOR APPARATUS WITH A CONSTRUCTION POINT OF THESE MIXING TUBE

Also Published As

Publication number Publication date
SE8306441L (en) 1984-05-24
SE8306441D0 (en) 1983-11-22
ATA354583A (en) 1987-01-15
DE3243223C1 (en) 1984-05-24
FR2536305A1 (en) 1984-05-25
GB2130920A (en) 1984-06-13
IT8323818A0 (en) 1983-11-22
GB8330309D0 (en) 1983-12-21

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Legal Events

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