EP1270077A1 - Pressure discharge flotation device. - Google Patents
Pressure discharge flotation device. Download PDFInfo
- 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- Withdrawn
Links
Images
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1018325A NL1018325C2 (nl) | 2001-06-19 | 2001-06-19 | Drukontspanningsflotatie-inrichting. |
NL1018325 | 2001-06-19 |
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)
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)
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 |
-
2001
- 2001-06-19 NL NL1018325A patent/NL1018325C2/nl not_active IP Right Cessation
-
2002
- 2002-06-17 EP EP02077351A patent/EP1270077A1/en not_active Withdrawn
Patent Citations (3)
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)
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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