GB1287274A - Automatic control apparatus for the thickness of a layer of froth in a flotation cell - Google Patents

Automatic control apparatus for the thickness of a layer of froth in a flotation cell

Info

Publication number
GB1287274A
GB1287274A GB4365369A GB4365369A GB1287274A GB 1287274 A GB1287274 A GB 1287274A GB 4365369 A GB4365369 A GB 4365369A GB 4365369 A GB4365369 A GB 4365369A GB 1287274 A GB1287274 A GB 1287274A
Authority
GB
United Kingdom
Prior art keywords
froth
thickness
slurry
layer
maintain
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
Application number
GB4365369A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1287274A publication Critical patent/GB1287274A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N35/1016—Control of the volume dispensed or introduced
    • 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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B13/00—Control arrangements specially adapted for wet-separating apparatus or for dressing plant, using physical effects
    • 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
    • B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
    • 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
    • B03D1/1487—Means for cleaning or maintenance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N35/1016—Control of the volume dispensed or introduced
    • G01N2035/1018—Detecting inhomogeneities, e.g. foam, bubbles, clots
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N2035/1025—Fluid level sensing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7306—Electrical characteristic sensing

Abstract

1287274 Froth flotation WESTINGHOUSE ELECTRIC CORP 3 Sept 1969 [26 Sept 1968] 43653/69 Heading B2H [Also in Division G3] The supply of frothing agent to a floatation separator is automatically controlled in dependence on a computation of the thickness of the layer of froth on the liquid from signals corresponding to contact of a moving probe with the upper and lower surfaces of the layer. In Fig. 1, the electrical probe 16 is withdrawn and reinserted periodically by an electric motor 22 and the thickness is determined by a computer 36 which regulates the supply of frothing agent (e.g. pine oil) at 24 to maintain the thickness constant. Computer 36 also controls an outlet valve 33 to maintain the slurry at such a level that only froth, with the separated minerals, overflows a weir at 15. Probe 16 may be cleaned between insertions. In a modification, a number of cells are mounted on an adjustable ramp so that froth cascades from cell to cell. The froth thickness and slurry level are controlled in each of a number of cells sequentially by a computer which also controls the outlet of slurry from the lowest cell to correct the slurry level in it, and the slope of the ramp to maintain a desired relationship between the slury levels in all the cells.
GB4365369A 1968-09-26 1969-09-03 Automatic control apparatus for the thickness of a layer of froth in a flotation cell Expired GB1287274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76270568A 1968-09-26 1968-09-26

Publications (1)

Publication Number Publication Date
GB1287274A true GB1287274A (en) 1972-08-31

Family

ID=25065827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4365369A Expired GB1287274A (en) 1968-09-26 1969-09-03 Automatic control apparatus for the thickness of a layer of froth in a flotation cell

Country Status (2)

Country Link
US (1) US3474902A (en)
GB (1) GB1287274A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180779A (en) * 1983-11-14 1987-04-08 Conoco Inc Control of froth cell performance through the use of differential bubbler tubes
WO2004080600A1 (en) 2003-03-13 2004-09-23 Technological Resources Pty Limited Measuring froth stability
WO2007082317A2 (en) * 2006-01-15 2007-07-19 Mintek Flotation test apparatus
WO2010149401A1 (en) * 2009-06-24 2010-12-29 Siemens Aktiengesellschaft Pneumatic flotation machine and flotation method
EP1957201A4 (en) * 2005-10-24 2012-04-25 Geol Tutkimuskeskus Gtk Method and device for monitoring the operation of a flotation cell
WO2015071867A1 (en) * 2013-11-18 2015-05-21 University Of The Witwatersrand, Johannesburg A method of estimating bubble size
WO2016132016A1 (en) * 2015-02-18 2016-08-25 Outotec (Finland) Oy A flotation device and method for passing coarser sized particles through a flotation device
US11554379B2 (en) 2016-08-05 2023-01-17 Outotec (Finland) Oy Flotation line and a method

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981619A (en) * 1972-11-09 1976-09-21 Mitter & Co. Control device for controlling the level of a liquid in a container
US3905894A (en) * 1973-10-02 1975-09-16 Murskauskone Oy Apparatus for wet fine screening
US4122875A (en) * 1977-03-30 1978-10-31 Del Monte Corporation Can filling apparatus and methods and apparatus and methods for conveying and controlling the feeding of wet materials
JPH04279Y2 (en) * 1981-05-21 1992-01-07
US4627576A (en) * 1982-04-09 1986-12-09 William F. Hahn Differential rate screening
US4544101A (en) * 1982-04-09 1985-10-01 Penn Virginia Corporation Differential rate screening
US4790183A (en) * 1987-05-05 1988-12-13 Beckman Instruments, Inc. Acoustic impedance system for liquid boundary level detection
US4804460A (en) * 1988-01-08 1989-02-14 Royal Inst. For Advancement Of Learn., A.K.A. (Mcgill Univ.) Column flotation
US4846003A (en) * 1988-06-08 1989-07-11 Beckman Instruments, Inc. Acoustic impedance system for pipette tip detection
DE3911233A1 (en) * 1989-04-07 1990-10-11 Voith Gmbh J M METHOD FOR CONTROLLING A FLOTATION SYSTEM
US5578198A (en) * 1990-09-21 1996-11-26 Yakutsky Nauchno-Issledovatelsky I Proektny Institut Almazodbyvajuschei Promyshlennosti Device for automatic regulation of the process of separating froth concentrate from gangue in a floatation machine
US5463895A (en) * 1990-11-09 1995-11-07 Abbott Laboratories Sample pipetting method
DE69320632T2 (en) * 1992-06-08 1999-04-15 Behring Diagnostics Inc LIQUID DISPENSER SYSTEM
US6158269A (en) * 1995-07-13 2000-12-12 Bayer Corporation Method and apparatus for aspirating and dispensing sample fluids
US5915282A (en) * 1995-12-14 1999-06-22 Abbott Laboratories Fluid handler and method of handling a fluid
US5723795A (en) * 1995-12-14 1998-03-03 Abbott Laboratories Fluid handler and method of handling a fluid
US5965828A (en) * 1995-12-14 1999-10-12 Abbott Laboratories Fluid handler and method of handling a fluid
AT412535B (en) * 2003-03-11 2005-04-25 Andritz Ag Maschf METHOD FOR REGULATING THE OPERATION OF A FLOTATION CELL
US8161814B2 (en) * 2008-06-09 2012-04-24 Luna Labs, Inc. Self-calibrating capacitive transducer for determining level of fluent materials
CN101881706B (en) * 2010-07-05 2014-04-02 深圳迈瑞生物医疗电子股份有限公司 Sampling device and method
US20150129053A1 (en) * 2013-11-12 2015-05-14 Po-Hui CHEN Automatic Drainage Device With A Level Controller

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451144A (en) * 1945-02-17 1948-10-12 Yale & Towne Mfg Co Froth level controlling device
US2836739A (en) * 1956-04-10 1958-05-27 Gilbert & Barker Mfg Co Electronic level sensitive apparatus
US3255882A (en) * 1962-10-15 1966-06-14 Duval Sulphur & Potash Company Flotation froth level control
US3169400A (en) * 1962-11-02 1965-02-16 Kiramidjian Ludwig Liquid level recording apparatus

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180779A (en) * 1983-11-14 1987-04-08 Conoco Inc Control of froth cell performance through the use of differential bubbler tubes
GB2180779B (en) * 1983-11-14 1989-08-16 Conoco Inc Control of froth cell performance through the use of differential bubbler tubes
WO2004080600A1 (en) 2003-03-13 2004-09-23 Technological Resources Pty Limited Measuring froth stability
EP1613434A1 (en) * 2003-03-13 2006-01-11 Technological Resources Pty. Ltd. Measuring froth stability
EP1613434A4 (en) * 2003-03-13 2007-07-04 Tech Resources Pty Ltd Measuring froth stability
EP1957201A4 (en) * 2005-10-24 2012-04-25 Geol Tutkimuskeskus Gtk Method and device for monitoring the operation of a flotation cell
WO2007082317A2 (en) * 2006-01-15 2007-07-19 Mintek Flotation test apparatus
WO2007082317A3 (en) * 2006-01-15 2007-09-13 Mintek Flotation test apparatus
EP2266704A1 (en) * 2009-06-24 2010-12-29 Siemens Aktiengesellschaft Pneumatic flotation machine and flotation method
WO2010149401A1 (en) * 2009-06-24 2010-12-29 Siemens Aktiengesellschaft Pneumatic flotation machine and flotation method
US8678193B2 (en) 2009-06-24 2014-03-25 Siemens Aktiengesellschaft Pneumatic flotation machine and flotation method
AU2010265033B2 (en) * 2009-06-24 2014-04-03 Siemens Aktiengesellschaft Pneumatic flotation machine and flotation method
RU2517246C2 (en) * 2009-06-24 2014-05-27 Сименс Акциенгезелльшафт Pneumatic flotation machine and method of flotation
WO2015071867A1 (en) * 2013-11-18 2015-05-21 University Of The Witwatersrand, Johannesburg A method of estimating bubble size
WO2016132016A1 (en) * 2015-02-18 2016-08-25 Outotec (Finland) Oy A flotation device and method for passing coarser sized particles through a flotation device
AU2016221600B2 (en) * 2015-02-18 2018-11-08 Outotec (Finland) Oy A flotation device and method for passing coarser sized particles through a flotation device
US11554379B2 (en) 2016-08-05 2023-01-17 Outotec (Finland) Oy Flotation line and a method

Also Published As

Publication number Publication date
US3474902A (en) 1969-10-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees