EP2266704A1 - Machine de flottation pneumatique et procédé de flottation - Google Patents

Machine de flottation pneumatique et procédé de flottation Download PDF

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Publication number
EP2266704A1
EP2266704A1 EP09163615A EP09163615A EP2266704A1 EP 2266704 A1 EP2266704 A1 EP 2266704A1 EP 09163615 A EP09163615 A EP 09163615A EP 09163615 A EP09163615 A EP 09163615A EP 2266704 A1 EP2266704 A1 EP 2266704A1
Authority
EP
European Patent Office
Prior art keywords
flotation
arrangement
gassing
pneumatic
measuring device
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Withdrawn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
EP09163615A
Other languages
German (de)
English (en)
Inventor
Lilla Dr. Grossmann
Wolfgang Krieglstein
Sven Menger
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.)
Siemens AG
Original Assignee
Siemens 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41426860&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2266704(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP09163615A priority Critical patent/EP2266704A1/fr
Priority to CA2766531A priority patent/CA2766531A1/fr
Priority to PE2011002151A priority patent/PE20121079A1/es
Priority to RU2012102262/03A priority patent/RU2517246C2/ru
Priority to EP10715150A priority patent/EP2445642A1/fr
Priority to CN201080028292.XA priority patent/CN102802802B/zh
Priority to AU2010265033A priority patent/AU2010265033B2/en
Priority to US13/380,870 priority patent/US8678193B2/en
Priority to MX2011013690A priority patent/MX2011013690A/es
Priority to PCT/EP2010/054395 priority patent/WO2010149401A1/fr
Priority to ARP100102154A priority patent/AR079397A1/es
Publication of EP2266704A1 publication Critical patent/EP2266704A1/fr
Priority to ZA2011/09100A priority patent/ZA201109100B/en
Priority to CL2011003294A priority patent/CL2011003294A1/es
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
    • B03D1/02—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
    • B03D1/24—Pneumatic
    • B03D1/242—Nozzles for injecting gas into the flotation tank

Definitions

  • the invention relates to a pneumatic flotation machine comprising a housing with a flotation chamber, at least one nozzle arrangement for supplying gas and a suspension in the flotation and at least one Begasungsan Aunt for further supply of gas into the flotation chamber, which is arranged in the flotation below the at least one nozzle arrangement is.
  • the invention further relates to a process for the flotation of particles from a suspension to form a foam product by means of such a pneumatic flotation machine.
  • Flotation is a physical separation process for separating fine-grained mixtures of solids, such as ores and gangue, in an aqueous slurry by means of air bubbles due to a different surface wettability of the particles contained in the suspension. It is used for the treatment of mineral resources and in the processing of preferably mineral substances with a low to moderate content of a useful component or a valuable material, for example in the form of non-ferrous metals, iron, metals of rare earths and / or precious metals and non-metallic mineral resources.
  • the WO 2006/069995 A1 describes a flotation machine with a housing, which comprises a flotation chamber, with at least one nozzle arrangement, here referred to as ejectors, further with at least one gassing, called air ventilation devices or aerators when using air, and a collecting container for a foam product formed during the flotation.
  • a suspension of water and fine-grained solid mixed with reagents is generally introduced into a flotation chamber via at least one nozzle arrangement.
  • the purpose of the reagents is to ensure that, in particular, the valuable particles, which are preferably to be separated off, are rendered hydrophobic in the suspension.
  • the at least one nozzle arrangement is supplied with gas, in particular with air, which comes into contact with the hydrophobic particles in the suspension.
  • the hydrophobic particles adhere to forming gas bubbles, so that the gas bubble structures, also called aeroflocs, float and form the foam product on the surface of the suspension.
  • the foam product is discharged into a collecting container and usually thickened.
  • the quality of the foam product or the separation efficiency of the pneumatic flotation process depends inter alia on the probability of collision between a hydrophobic particle and a gas bubble.
  • the collision probability is influenced inter alia by the position of the at least one gassing device in the flotation chamber.
  • the optimum position has hitherto been selected depending on the properties of the suspension used, such as a volume concentration of solids, an ore content, a mineral composition, a particle size distribution, etc., and the flow conditions in the flotation chamber and maintained over the operating life of the flotation machine.
  • the object is for the pneumatic flotation machine comprising a housing with a flotation chamber, at least one nozzle arrangement for supplying gas and a suspension in the flotation and at least one Begasungsan Aunt for further supply of gas into the flotation chamber, which in the flotation below the at least one nozzle arrangement is arranged, solved in that further comprises at least one adjusting device for changing a position of the at least one gassing arrangement in the flotation chamber is present.
  • the object is achieved for the method for flotation of particles from a suspension to form a foam product by means of a pneumatic flotation machine according to the invention by changing a position of the at least one gassing arrangement in the flotation chamber by means of the at least one adjusting device during the flotation.
  • the flotation machine according to the invention and the method according to the invention make it possible to continuously change the position of the at least one gassing arrangement during operation of the flotation machine and to change influencing variables, in particular changing properties the suspension used and flow conditions in the flotation to adapt flexibly.
  • This allows positioning of the at least one gassing device such that the gas bubbles are discharged at all times directly into the flow line (s) carrying an increased number of particles.
  • the probability of collision between a gas bubble and a hydrophobic particle is kept continuously at a consistently high level and thus the separation success is maintained or even increased despite changing influencing variables.
  • the result is an increase in the total yield in the flotation with optimal utilization of the plant capacity.
  • a change in the amount of reagents added to the suspension may be dispensed with and additional costs for excessive reagent use avoided.
  • a combination of the method according to the invention with an adaptation of the amount added and / or the type of reagents can often further increase the performance of the flotation machine.
  • the pneumatic flotation machine further comprises at least one measuring device for analyzing a formed foam product and / or the suspension.
  • the monitoring of changes in the suspension and / or the foam product can be automated in a simple manner.
  • monitoring by trained personnel would be possible, which can assess the flotation process on the basis of empirical values, in particular with regard to the quality of the foam product produced.
  • At least one arithmetic unit is furthermore provided, which is connected to the at least one measuring device, wherein the at least one arithmetic unit is set up is to calculate and output a manipulated variable from analysis values supplied by the at least one measuring device, according to which the position of the at least one gassing arrangement can be changed by means of the at least one adjusting device.
  • the manipulated variable enables an immediate and particularly rapid optimization of the position of the at least one gassing arrangement, since the adjusting device only has to be adjusted by the amount predetermined by the manipulated variable.
  • an experimental approach to the optimal position of the at least one gassing arrangement is alternatively possible by the stepwise adjustment of the at least one adjusting device based on empirical values by the operating personnel.
  • the at least one adjusting device is also connected to the at least one arithmetic unit, wherein the position of the at least one gassing arrangement can be automatically changed as a function of the manipulated variable by means of the at least one adjusting device.
  • the at least one adjusting device preferably has a drive motor which changes the position of the at least one gassing device in the flotation chamber in accordance with the manipulated variable.
  • the adjusting device may also be manually operable and, for example, a crank, a lever or the like operatively connected to a linkage, in particular toothed rod, a cable system or the like.
  • the position of the at least one gassing arrangement can be changed in particular vertically and / or horizontally by means of the at least one adjusting device. As a result, the path traveled by the gas bubbles when floating in the direction of the surface in the suspension, changed and thereby extended or shortened.
  • the at least one gassing arrangement preferably comprises a gas supply line, a gas distribution system and at least two gas inflow nozzles.
  • the gas in particular air, is guided via the gas supply line into the flotation chamber, fed into the gas distributor system and distributed therein to equal proportions of the individual gas inlet nozzles.
  • a gassing arrangement is formed only from a gas inlet nozzle, which is connected directly to its own gas supply line. On the gas distribution system can be omitted.
  • a gassing arrangement can be arranged, for example, directly movably on the wall of the housing in the region of the flotation chamber.
  • the housing has a cylindrical housing section whose symmetry axis is arranged vertically, wherein the position of the at least one gassing arrangement can be changed within the cylindrical housing section.
  • the position of the at least one gassing arrangement within the cylindrical housing section in the direction of the symmetry axis is variable by a maximum of 50% of the height of the cylindrical housing section.
  • the gas supply line of the at least one gassing arrangement is in this case preferably arranged along the axis of symmetry and centered on this. This allows a particularly simple and uncomplicated position change of the gassing arrangement.
  • the at least one measuring device can be located in or outside the housing. In order to achieve the shortest possible reaction times, it has proven useful if the at least one measuring device is arranged within the housing.
  • an analysis of the foam product and / or the suspension is preferably carried out in the method according to the invention and the position of the at least one gassing arrangement in the flotation chamber is changed by means of the at least one adjusting device as a function of the analysis.
  • the continuous monitoring of the influencing variables allows, when they are changed, a direct and timely adaptation of the position of the at least one gassing arrangement.
  • a manipulated variable is calculated and output from the analysis values provided by the at least one measuring device by means of the at least one arithmetic unit, according to which the position of the at least one gassing arrangement is changed.
  • the position of the at least one gassing arrangement is automatically changed as a function of the manipulated variable.
  • FIG. 1 shows a pneumatic flotation machine 100 with a housing 1, which comprises a flotation chamber 3.
  • a housing 1 which comprises a flotation chamber 3.
  • the flotation chamber 3 is equipped with at least one nozzle arrangement 4 for supplying gas, in particular air, and a suspension into the flotation chamber 3.
  • the housing 1 has a cylindrical housing portion 1a, at the lower end of a gassing assembly 5 is arranged.
  • the housing 1 furthermore has a bottom discharge opening 6.
  • the upper edge of the outer wall of the housing 1 is located above the upper edge of the foam channel 2, whereby an overflow of the foam product on the upper edge of the housing 1 is excluded.
  • Particles of the suspension which are provided, for example, with an insufficiently hydrophobized surface or have not collided with a gas bubble and hydrophilic particles sink in the direction of the bottom discharge opening 6.
  • additional gas in particular air
  • the foam product passes from the flotation chamber 3 in the foam channel 2 and is discharged via the nozzle 7 and optionally thickened.
  • the gassing device 5 comprises a gas supply line 5a, a gas distributor system 5b and four gas inlet nozzles 5c.
  • a schematically illustrated adjusting device 9 acts here on the gas supply line 5a to the position of the gassing assembly 5 in the flotation chamber 3, in particular by vertical (see double arrow) raising or lowering.
  • a measuring device 10 is arranged, by means of which, for example, an analysis of the foam height of the foam product in the foam channel 2 or a solids content of the foam product is carried out.
  • the foam height can also be detected visually by the operating personnel.
  • the measuring device 10 is connected via a data line 8a to a computing unit 11, via which analysis or measured values determined during the analysis are transmitted to the arithmetic unit 11. Comparative values are stored in the arithmetic unit 11, with which the measured values are compared. If an impermissibly large deviation of the measured values from the comparison values is determined, the arithmetic unit 11 calculates and outputs a manipulated variable which specifies a required change in the position of the gassing arrangement 5. The required change in position can now be carried out manually, for example, by means of the adjusting device 9.
  • the manipulated variable can be transmitted to the adjusting device 9 via a further data line 8b and the required change in position can be carried out automatically by means of the adjusting device 9.
  • FIG. 2 shows the pneumatic flotation machine 100 in plan view, but here the sake of clarity on the presentation of the adjustment device 9, the measuring device 10 and the computing unit 11 was omitted.
  • pneumatic flotation machine is only one example of a variety of suitable flotation machines, which can provide a person skilled in the invention with at least one adjustment and optionally further with at least one measuring device. So can suitable flotation machines with regard to the configuration and arrangement of the foam collector, the number of nozzle arrangements for injecting suspension and gas, the number, arrangement and mode of operation of the adjustment devices for changing the position of the gasification device (s), the number, type and arrangement of measuring devices, the configuration of the gasification arrangement etc. without departing from the spirit of the invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biotechnology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Paper (AREA)
  • Nozzles (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Removal Of Floating Material (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Coating Apparatus (AREA)
EP09163615A 2009-06-24 2009-06-24 Machine de flottation pneumatique et procédé de flottation Withdrawn EP2266704A1 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
EP09163615A EP2266704A1 (fr) 2009-06-24 2009-06-24 Machine de flottation pneumatique et procédé de flottation
PCT/EP2010/054395 WO2010149401A1 (fr) 2009-06-24 2010-04-01 Machine de flottation pneumatique et procédé de flottation
AU2010265033A AU2010265033B2 (en) 2009-06-24 2010-04-01 Pneumatic flotation machine and flotation method
MX2011013690A MX2011013690A (es) 2009-06-24 2010-04-01 Maquina de flotacion neumatica y metodo de flotacion.
RU2012102262/03A RU2517246C2 (ru) 2009-06-24 2010-04-01 Пневматическая флотационная машина и способ флотации
EP10715150A EP2445642A1 (fr) 2009-06-24 2010-04-01 Machine de flottation pneumatique et procédé de flottation
CN201080028292.XA CN102802802B (zh) 2009-06-24 2010-04-01 气动式浮选机和浮选方法
CA2766531A CA2766531A1 (fr) 2009-06-24 2010-04-01 Machine de flottation pneumatique et procede de flottation
US13/380,870 US8678193B2 (en) 2009-06-24 2010-04-01 Pneumatic flotation machine and flotation method
PE2011002151A PE20121079A1 (es) 2009-06-24 2010-04-01 Maquina de flotacion neumatica y metodo de flotacion
ARP100102154A AR079397A1 (es) 2009-06-24 2010-06-18 Maquina de flotacion neumatica y procedimiento de flotacion
ZA2011/09100A ZA201109100B (en) 2009-06-24 2011-12-09 Pneumatic flotation machine and flotation method
CL2011003294A CL2011003294A1 (es) 2009-06-24 2011-12-23 Maquina de flotacion neumatica que posee una carcasa, una camara de flotacion, una boquilla para alimentacion de gas, un mecanismo de gasificacion, dispositivo regulador para< cambiar de posicion el mecanismo de gasificacion, dispositivo de medicion de producto espumoso formado y/o analisis de la suspension; y proceso para flotacion.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09163615A EP2266704A1 (fr) 2009-06-24 2009-06-24 Machine de flottation pneumatique et procédé de flottation

Publications (1)

Publication Number Publication Date
EP2266704A1 true EP2266704A1 (fr) 2010-12-29

Family

ID=41426860

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09163615A Withdrawn EP2266704A1 (fr) 2009-06-24 2009-06-24 Machine de flottation pneumatique et procédé de flottation
EP10715150A Withdrawn EP2445642A1 (fr) 2009-06-24 2010-04-01 Machine de flottation pneumatique et procédé de flottation

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10715150A Withdrawn EP2445642A1 (fr) 2009-06-24 2010-04-01 Machine de flottation pneumatique et procédé de flottation

Country Status (12)

Country Link
US (1) US8678193B2 (fr)
EP (2) EP2266704A1 (fr)
CN (1) CN102802802B (fr)
AR (1) AR079397A1 (fr)
AU (1) AU2010265033B2 (fr)
CA (1) CA2766531A1 (fr)
CL (1) CL2011003294A1 (fr)
MX (1) MX2011013690A (fr)
PE (1) PE20121079A1 (fr)
RU (1) RU2517246C2 (fr)
WO (1) WO2010149401A1 (fr)
ZA (1) ZA201109100B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005031A1 (de) * 2011-03-03 2012-09-06 Siemens Aktiengesellschaft Flotationsvorrichtung, Verfahren zum Betreiben der Flotationsvorrichtung sowie deren Verwendung
CN102847613B (zh) * 2012-09-25 2015-05-06 北矿机电科技有限责任公司 一种浮选柱
CN104174506B (zh) * 2014-09-05 2016-08-24 吉首大学 旋翼浮动刷矿物浮选机
CN107127056A (zh) * 2017-06-27 2017-09-05 北矿机电科技有限责任公司 一种在线调节浮选机循环能力的装置
CN107401076B (zh) * 2017-09-01 2023-12-26 玖龙纸业（太仓）有限公司 一种实验室用脱墨浆浮选装置及脱墨方法
EP3706913A1 (fr) * 2017-11-08 2020-09-16 FLSmidth A/S Procédé de conversion de cellule de flottation à aspiration naturelle en une cellule de flottation à gaz forcé, et appareil associé
RU178338U1 (ru) * 2018-01-22 2018-03-30 Марк Григорьевич Видуецкий Мобильная флотационная установка

Citations (7)

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Publication number Priority date Publication date Assignee Title
US2238139A (en) * 1939-03-22 1941-04-15 Minerals Separation North Us Agitation and aeration apparatus
DE726709C (de) * 1939-09-24 1942-10-19 Erz U Kohle Flotation G M B H Vorrichtung zur pneumatischen Schaum-Schwimmaufbereitung von Erzen, Kohle oder anderen Mineralien
US2612358A (en) * 1947-06-14 1952-09-30 Mining Process & Patent Co Pumping-type flotation apparatus
US2883169A (en) * 1955-04-29 1959-04-21 Mining Process & Patent Co Aerating apparatus for flotation pulps
GB1287274A (en) * 1968-09-26 1972-08-31 Westinghouse Electric Corp Automatic control apparatus for the thickness of a layer of froth in a flotation cell
DE3312070A1 (de) * 1983-04-02 1984-10-04 Klöckner-Humboldt-Deutz AG, 5000 Köln Flotationszelle
WO2006069995A1 (fr) 2004-12-28 2006-07-06 Siemens Aktiengesellschaft Colonne de flottation pneumatique comportant un recipient de collecte de mousse

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US1921220A (en) 1927-08-08 1933-08-08 Arthur C Daman Conditioner and agitator
SU489530A1 (ru) 1974-05-16 1975-10-30 Институт Обогащения Твердых Горючих Ископаемых Пневматическа флотационна машина
DE2836496C2 (de) * 1978-08-21 1982-05-13 E. & M. Lamort S.A., 51300 Vitry-le-François, Marne Verfahren und Vorrichtung zum Deinken von Faserstoffsuspensionen
GB2041788B (en) 1978-08-21 1982-10-06 Feldmuehle Ag Method and device for cleaning suspension fibres
SU1377151A1 (ru) 1985-12-26 1988-02-28 Всесоюзный научно-исследовательский и проектный институт механической обработки полезных ископаемых "Механобр" Вибрационна флотационна машина
SU1348844A1 (ru) 1986-06-30 1987-10-30 Донецкий политехнический институт Устройство дл обмена информацией между цифровой и аналоговой вычислительными машинами
RU2011421C1 (ru) 1990-08-06 1994-04-30 Якутский Научно-Исследовательский И Проектный Институт Алмазодобывающей Промышленности Способ автоматического управления процессом обогащения пенной флотации
FI87893C (fi) * 1991-06-05 1993-03-10 Outokumpu Research Oy Saett att anrika malmsuspension med hjaelp av kraftig foerberedande blandning och samtidig flotation samt anordningar foer genomfoerande av detta
RU2281169C1 (ru) * 2004-12-06 2006-08-10 Закрытое акционерное общество "Научно-производственный внедренческий центр "Уральский научно-исследовательский и проектный институт обогащения и механической обработки полезных ископаемых - Техника" (ЗАО НПВЦ "Уралмеханобр - Техника") Флотационная колонная пневматическая машина
CA2561539C (fr) * 2006-09-28 2016-11-08 Hydro Processing & Mining Ltd. Appareil et methode pour l'accrochage efficace de particules aux bulles de gaz dans une suspension epaisse
CN101622074B (zh) * 2007-04-12 2014-10-22 埃里埃兹制造公司 浮选分离装置和方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238139A (en) * 1939-03-22 1941-04-15 Minerals Separation North Us Agitation and aeration apparatus
DE726709C (de) * 1939-09-24 1942-10-19 Erz U Kohle Flotation G M B H Vorrichtung zur pneumatischen Schaum-Schwimmaufbereitung von Erzen, Kohle oder anderen Mineralien
US2612358A (en) * 1947-06-14 1952-09-30 Mining Process & Patent Co Pumping-type flotation apparatus
US2883169A (en) * 1955-04-29 1959-04-21 Mining Process & Patent Co Aerating apparatus for flotation pulps
GB1287274A (en) * 1968-09-26 1972-08-31 Westinghouse Electric Corp Automatic control apparatus for the thickness of a layer of froth in a flotation cell
DE3312070A1 (de) * 1983-04-02 1984-10-04 Klöckner-Humboldt-Deutz AG, 5000 Köln Flotationszelle
WO2006069995A1 (fr) 2004-12-28 2006-07-06 Siemens Aktiengesellschaft Colonne de flottation pneumatique comportant un recipient de collecte de mousse

Also Published As

Publication number Publication date
ZA201109100B (en) 2012-08-29
AR079397A1 (es) 2012-01-25
PE20121079A1 (es) 2012-08-19
CN102802802B (zh) 2014-11-26
AU2010265033A1 (en) 2012-01-12
AU2010265033B2 (en) 2014-04-03
CL2011003294A1 (es) 2012-05-25
CN102802802A (zh) 2012-11-28
MX2011013690A (es) 2012-02-08
US8678193B2 (en) 2014-03-25
WO2010149401A1 (fr) 2010-12-29
RU2012102262A (ru) 2013-07-27
EP2445642A1 (fr) 2012-05-02
US20120145606A1 (en) 2012-06-14
RU2517246C2 (ru) 2014-05-27
CA2766531A1 (fr) 2010-12-29

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