EP0514800A3 - Device for pneumatic flotation - Google Patents

Device for pneumatic flotation Download PDF

Info

Publication number
EP0514800A3
EP0514800A3 EP92108321A EP92108321A EP0514800A3 EP 0514800 A3 EP0514800 A3 EP 0514800A3 EP 92108321 A EP92108321 A EP 92108321A EP 92108321 A EP92108321 A EP 92108321A EP 0514800 A3 EP0514800 A3 EP 0514800A3
Authority
EP
European Patent Office
Prior art keywords
sediment
pressure
reduction
gas
pneumatic flotation
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
EP92108321A
Other languages
German (de)
Other versions
EP0514800A2 (en
EP0514800B1 (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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0514800A2 publication Critical patent/EP0514800A2/en
Publication of EP0514800A3 publication Critical patent/EP0514800A3/en
Application granted granted Critical
Publication of EP0514800B1 publication Critical patent/EP0514800B1/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
    • B03D1/24—Pneumatic
    • 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
    • B03D1/02—Froth-flotation processes
    • B03D1/028—Control and monitoring of flotation processes; computer models therefor
    • 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
    • B03D1/1431—Dissolved air flotation machines
    • 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
    • B03D1/1462—Discharge mechanisms for the froth

Abstract

In a device for pneumatic flotation, the gas-treated sediment is conducted via a pipe (16) into the bottom region of the separation cell (10) to a pressure build-up nozzle (19), which as a result of its reduction in cross-section builds up a defined pressure in the gas-treated sediment, which leads to a reduction in size of the gas bubbles. The sediment under elevated pressure is then, prior to entry into the separation vessel, expanded in a pressure reduction chamber (21) which is furnished with sediment outlet nozzles (22). <IMAGE>
EP92108321A 1991-05-22 1992-05-16 Device for pneumatic flotation Expired - Lifetime EP0514800B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4116645A DE4116645A1 (en) 1991-05-22 1991-05-22 DEVICE FOR CARRYING OUT A PNEUMATIC FLOTATION
DE4116645 1991-05-22

Publications (3)

Publication Number Publication Date
EP0514800A2 EP0514800A2 (en) 1992-11-25
EP0514800A3 true EP0514800A3 (en) 1995-02-22
EP0514800B1 EP0514800B1 (en) 1996-07-31

Family

ID=6432144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92108321A Expired - Lifetime EP0514800B1 (en) 1991-05-22 1992-05-16 Device for pneumatic flotation

Country Status (7)

Country Link
EP (1) EP0514800B1 (en)
AT (1) ATE140882T1 (en)
CS (1) CS154592A3 (en)
DE (2) DE4116645A1 (en)
ES (1) ES2090409T3 (en)
HU (1) HU211098B (en)
PL (1) PL167874B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2491132C1 (en) * 2012-03-01 2013-08-27 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" Pneumatic flotation machine
RU2614170C1 (en) * 2016-05-23 2017-03-23 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Pneumatic flotation machine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2130920A (en) * 1936-07-06 1938-09-20 Mays Mfg Company Inc Memorandum-pad holder for telephones
FR2206985A1 (en) * 1972-11-22 1974-06-14 Saint Gobain Techn Nouvelles
US4255262A (en) * 1979-03-26 1981-03-10 U.S. Filter Corporation Hydraulic powered mixing apparatus
US4338192A (en) * 1978-12-18 1982-07-06 Ingersoll-Rand Company Clarifier bubble generation and distribution nozzle
DE3101221A1 (en) * 1981-01-16 1982-08-05 J.M. Voith Gmbh, 7920 Heidenheim "Froth flotation device"
GB2108858A (en) * 1981-11-07 1983-05-25 Voith Gmbh J M Injection apparatus
FR2550469A1 (en) * 1983-08-09 1985-02-15 Alsthom Atlantique INJECTOR OF MICROBULLES
EP0146235A2 (en) * 1983-10-21 1985-06-26 The University Of Newcastle Research Associates Limited Improved flotation method
NL8602243A (en) * 1986-09-05 1988-04-05 Facet Ind B V Separator for mixed liquids - has flotation tanks with liq. and gas supplies in vertical cylindrical case
DE3733583A1 (en) * 1987-10-03 1989-04-20 Dietrich Dr Eichler Method and apparatus for producing very fine air bubbles for the purpose of floatation of sludges

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2130920A (en) * 1936-07-06 1938-09-20 Mays Mfg Company Inc Memorandum-pad holder for telephones
FR2206985A1 (en) * 1972-11-22 1974-06-14 Saint Gobain Techn Nouvelles
US4338192A (en) * 1978-12-18 1982-07-06 Ingersoll-Rand Company Clarifier bubble generation and distribution nozzle
US4255262A (en) * 1979-03-26 1981-03-10 U.S. Filter Corporation Hydraulic powered mixing apparatus
DE3101221A1 (en) * 1981-01-16 1982-08-05 J.M. Voith Gmbh, 7920 Heidenheim "Froth flotation device"
GB2108858A (en) * 1981-11-07 1983-05-25 Voith Gmbh J M Injection apparatus
FR2550469A1 (en) * 1983-08-09 1985-02-15 Alsthom Atlantique INJECTOR OF MICROBULLES
EP0146235A2 (en) * 1983-10-21 1985-06-26 The University Of Newcastle Research Associates Limited Improved flotation method
NL8602243A (en) * 1986-09-05 1988-04-05 Facet Ind B V Separator for mixed liquids - has flotation tanks with liq. and gas supplies in vertical cylindrical case
DE3733583A1 (en) * 1987-10-03 1989-04-20 Dietrich Dr Eichler Method and apparatus for producing very fine air bubbles for the purpose of floatation of sludges

Also Published As

Publication number Publication date
HUT62827A (en) 1993-06-28
EP0514800A2 (en) 1992-11-25
HU9201693D0 (en) 1992-08-28
PL167874B1 (en) 1995-11-30
DE4116645A1 (en) 1992-11-26
EP0514800B1 (en) 1996-07-31
HU211098B (en) 1995-10-30
ES2090409T3 (en) 1996-10-16
DE59206835D1 (en) 1996-09-05
PL294649A1 (en) 1993-01-25
ATE140882T1 (en) 1996-08-15
CS154592A3 (en) 1992-12-16

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