EP1084753A3 - Pneumatic flotation separation device - Google Patents

Pneumatic flotation separation device Download PDF

Info

Publication number
EP1084753A3
EP1084753A3 EP00307484A EP00307484A EP1084753A3 EP 1084753 A3 EP1084753 A3 EP 1084753A3 EP 00307484 A EP00307484 A EP 00307484A EP 00307484 A EP00307484 A EP 00307484A EP 1084753 A3 EP1084753 A3 EP 1084753A3
Authority
EP
European Patent Office
Prior art keywords
annular channel
pulp
separation device
pneumatic flotation
flotation separation
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
EP00307484A
Other languages
German (de)
French (fr)
Other versions
EP1084753B1 (en
EP1084753A2 (en
Inventor
Rainer Dr. Imhof
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.)
Maelgwyn Mineral Services Ltd
Original Assignee
Maelgwyn Mineral Services Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10860894&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1084753(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Maelgwyn Mineral Services Ltd filed Critical Maelgwyn Mineral Services Ltd
Publication of EP1084753A2 publication Critical patent/EP1084753A2/en
Publication of EP1084753A3 publication Critical patent/EP1084753A3/en
Application granted granted Critical
Publication of EP1084753B1 publication Critical patent/EP1084753B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B03D1/1418—Flotation machines using centrifugal forces
    • 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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Paper (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Fish Paste Products (AREA)

Abstract

A separating device (10) especially for use in a pneumatic flotation system comprises an annular channel (18), at least one nozzle (16) for introducing aerated pulp substantially horizontally and tangentially into the annular channel (18), froth extraction means (26) for the removal of separated froth from the annular channel (18), and pulp extraction means (24) for the removal of separated pulp from the annular channel (18), the at least one nozzle (16) being configured so that the aerated pulp introduced into the annular channel (18) rotates therein with centrifugal forces of between 5 and 20 ms-2.
EP00307484A 1999-09-14 2000-08-31 Procees and device for pneumatic flotation separation Expired - Lifetime EP1084753B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9921716 1999-09-14
GBGB9921716.8A GB9921716D0 (en) 1999-09-14 1999-09-14 Pneumatic flotation separation device

Publications (3)

Publication Number Publication Date
EP1084753A2 EP1084753A2 (en) 2001-03-21
EP1084753A3 true EP1084753A3 (en) 2002-01-09
EP1084753B1 EP1084753B1 (en) 2006-10-18

Family

ID=10860894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00307484A Expired - Lifetime EP1084753B1 (en) 1999-09-14 2000-08-31 Procees and device for pneumatic flotation separation

Country Status (5)

Country Link
EP (1) EP1084753B1 (en)
AT (1) ATE342772T1 (en)
DE (1) DE60031344T2 (en)
ES (1) ES2274766T3 (en)
GB (1) GB9921716D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002074440A1 (en) * 2001-03-19 2002-09-26 Maelgwyn Mineral Services Limited Pneumatic flotation separation device
US20080308502A1 (en) 2005-02-01 2008-12-18 The UIniversity of Newcastle Researcdh Associates Limited Method and Apparatus for Contacting Bubbles and Particles in a Flotation Separation System
CN112723454B (en) * 2020-12-04 2022-09-06 成都市蜀科科技有限责任公司 Efficient jet air flotation machine for sewage treatment
CN113976333B (en) * 2021-10-25 2022-07-22 中南大学 Pretreatment method of high-magnetic pyrite-containing type copper ore

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR86129E (en) * 1964-07-08 1965-12-17 Kloeckner Humboldt Deutz Ag Tank for the foam flotation of mixtures of fine-grained materials, in particular minerals
DE2738782B1 (en) * 1977-08-27 1978-11-09 Voith Gmbh J M Flotation device for removing printer's ink
FR2584947A1 (en) * 1985-07-19 1987-01-23 Escher Wyss Gmbh Device for introducing gas into a flotation system and its use in paper-making plant, in particular for deinking waste paper
US5651879A (en) * 1995-02-23 1997-07-29 Gonzalez; Pierre Cell for treating a liquid medium by means of flotation
EP0888819A1 (en) * 1997-07-03 1999-01-07 Voith Sulzer Papiertechnik Patent GmbH Method and plant for removing impurities from an aqueous suspension of fibrous matter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR86129E (en) * 1964-07-08 1965-12-17 Kloeckner Humboldt Deutz Ag Tank for the foam flotation of mixtures of fine-grained materials, in particular minerals
DE2738782B1 (en) * 1977-08-27 1978-11-09 Voith Gmbh J M Flotation device for removing printer's ink
FR2584947A1 (en) * 1985-07-19 1987-01-23 Escher Wyss Gmbh Device for introducing gas into a flotation system and its use in paper-making plant, in particular for deinking waste paper
US5651879A (en) * 1995-02-23 1997-07-29 Gonzalez; Pierre Cell for treating a liquid medium by means of flotation
EP0888819A1 (en) * 1997-07-03 1999-01-07 Voith Sulzer Papiertechnik Patent GmbH Method and plant for removing impurities from an aqueous suspension of fibrous matter

Also Published As

Publication number Publication date
GB9921716D0 (en) 1999-11-17
DE60031344T2 (en) 2007-05-24
EP1084753B1 (en) 2006-10-18
DE60031344D1 (en) 2006-11-30
ATE342772T1 (en) 2006-11-15
EP1084753A2 (en) 2001-03-21
ES2274766T3 (en) 2007-06-01

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