GB2130920B - A process and apparatus for the flotation of fibrous suspensions - Google Patents
A process and apparatus for the flotation of fibrous suspensionsInfo
- 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
Links
- 238000005188 flotation Methods 0.000 title abstract 8
- 239000000725 suspension Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title 1
- 239000002245 particle Substances 0.000 abstract 2
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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Paper (AREA)
- Preliminary Treatment Of Fibers (AREA)
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.
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)
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 |
US7544271B1 (en) | 2006-06-12 | 2009-06-09 | Narayanasamy Seenivasan | Open flotation 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 |
FI119598B (en) | 2007-04-05 | 2009-01-15 | Metso Paper Inc | Flotation cell injector |
FI119998B (en) * | 2007-04-05 | 2009-05-29 | Metso Paper Inc | Feeding of fiber suspension flow to flotation cell and flotation cell injector |
Family Cites Families (9)
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 |
-
1982
- 1982-11-23 DE DE3243223A patent/DE3243223C1/en not_active Expired
-
1983
- 1983-10-06 AT AT833545A patent/ATA354583A/en not_active Application Discontinuation
- 1983-11-14 GB GB08330309A patent/GB2130920B/en not_active Expired
- 1983-11-22 SE SE8306441A patent/SE8306441L/en not_active Application Discontinuation
- 1983-11-22 IT IT8323818A patent/IT8323818A0/en unknown
- 1983-11-23 FR FR8318675A patent/FR2536305A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
IT8323818A0 (en) | 1983-11-22 |
SE8306441L (en) | 1984-05-24 |
GB8330309D0 (en) | 1983-12-21 |
DE3243223C1 (en) | 1984-05-24 |
SE8306441D0 (en) | 1983-11-22 |
GB2130920A (en) | 1984-06-13 |
ATA354583A (en) | 1987-01-15 |
FR2536305A1 (en) | 1984-05-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |