EP1270077A1 - Pressure discharge flotation device. - Google Patents

Pressure discharge flotation device. Download PDF

Info

Publication number
EP1270077A1
EP1270077A1 EP02077351A EP02077351A EP1270077A1 EP 1270077 A1 EP1270077 A1 EP 1270077A1 EP 02077351 A EP02077351 A EP 02077351A EP 02077351 A EP02077351 A EP 02077351A EP 1270077 A1 EP1270077 A1 EP 1270077A1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
flotation
pressure discharge
hose member
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.)
Withdrawn
Application number
EP02077351A
Other languages
German (de)
English (en)
French (fr)
Inventor
Gerhard Willem Van Den Hurk
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.)
Redes Beheer BV
Original Assignee
Redes Beheer BV
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 Redes Beheer BV filed Critical Redes Beheer BV
Publication of EP1270077A1 publication Critical patent/EP1270077A1/en
Withdrawn legal-status Critical Current

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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
    • B03D1/1431—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
    • B03D1/02—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
    • B03D1/1443—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
    • B03D1/24—Pneumatic

Definitions

  • US Patent No. 3,542,675 discloses a valve, in which a valve disc attached to a valve stem is movable with respect to a valve seat under the influence of a fluid under a working pressure (pressurised air), which acts on a membrane, for adjusting the medium flowing through the valve.
  • a working pressure pressurised air
  • this valve comprises several parts which are susceptible to wear.
  • the working range of the valve is only adjustable to a limited extent, so that a precise adjustment of the valve is not possible very well.
  • WO 95/26930 the valve is easily obstructed by impurities in the liquid flowing through the valve as a result of the small passage thereof.
  • Said sensing of the flow can take place by carrying out a pressure measurement, for example.
  • the operation of the valve 40 is as follows.
  • the valve 40 is fitted in a conduit 53 (schematically shown) by means of connecting pieces 46 and 47.
  • a liquid flows through said conduit 53.
  • the liquid flowing through the conduit 53 also flows through the cylindrical part 50 of the valve 40.
  • Via a conduit 43 a fluid, a gas or a liquid is forced into the space 48 under pressure via the opening 42.
  • the pressure of the fluid in the space 48 may be greater than the pressure in the liquid in the space 50.
  • the flexible hose member 44 will bend in that case, for example to a position as illustrated by the dashed line 35.
  • the fluid passage in the conduit 53 will be reduced from the area at the inlet or outlet 49 in the connecting piece 46 to the cross-sectional area at 54.
  • the valve 40 will shut off the flow of liquid through the conduit 53 altogether.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Pipeline Systems (AREA)
EP02077351A 2001-06-19 2002-06-17 Pressure discharge flotation device. Withdrawn EP1270077A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1018325 2001-06-19
NL1018325A NL1018325C2 (nl) 2001-06-19 2001-06-19 Drukontspanningsflotatie-inrichting.

Publications (1)

Publication Number Publication Date
EP1270077A1 true EP1270077A1 (en) 2003-01-02

Family

ID=19773575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02077351A Withdrawn EP1270077A1 (en) 2001-06-19 2002-06-17 Pressure discharge flotation device.

Country Status (2)

Country Link
EP (1) EP1270077A1 (nl)
NL (1) NL1018325C2 (nl)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103090106A (zh) * 2013-01-28 2013-05-08 王云峰 一种镍浮选机调节阀阀芯
CN105170337A (zh) * 2014-04-11 2015-12-23 衢州市优德工业设计有限公司 一种提高可靠性的浮选方法
EP4084911A4 (en) * 2019-12-31 2023-09-13 Metso Outotec Finland Oy METHOD AND SYSTEM FOR TREATING A LIQUID AND FLOTATION DEVICE
CN117599962A (zh) * 2023-12-21 2024-02-27 中国矿业大学 一种浮选柱进气量检测控制装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542675A (en) * 1968-07-26 1970-11-24 Combustion Eng Water treatment
GB2095130A (en) * 1981-03-24 1982-09-29 Bergwerksverband Gmbh Flotation plant
WO1995026930A1 (en) * 1994-04-05 1995-10-12 Wiser Oy Method and equipment for treatment of a liquid flow to be cleaned and passed into a flotation plant or equivalent

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542675A (en) * 1968-07-26 1970-11-24 Combustion Eng Water treatment
GB2095130A (en) * 1981-03-24 1982-09-29 Bergwerksverband Gmbh Flotation plant
WO1995026930A1 (en) * 1994-04-05 1995-10-12 Wiser Oy Method and equipment for treatment of a liquid flow to be cleaned and passed into a flotation plant or equivalent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103090106A (zh) * 2013-01-28 2013-05-08 王云峰 一种镍浮选机调节阀阀芯
CN105170337A (zh) * 2014-04-11 2015-12-23 衢州市优德工业设计有限公司 一种提高可靠性的浮选方法
EP4084911A4 (en) * 2019-12-31 2023-09-13 Metso Outotec Finland Oy METHOD AND SYSTEM FOR TREATING A LIQUID AND FLOTATION DEVICE
CN117599962A (zh) * 2023-12-21 2024-02-27 中国矿业大学 一种浮选柱进气量检测控制装置

Also Published As

Publication number Publication date
NL1018325C2 (nl) 2002-12-20

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