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WO2003008959A1 - Procede de flottation regulee de particules dispersees dans un liquide et dispositif de mise en oeuvre de ce procede - Google Patents

Procede de flottation regulee de particules dispersees dans un liquide et dispositif de mise en oeuvre de ce procede Download PDF

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Publication number
WO2003008959A1
WO2003008959A1 PCT/EP2002/007737 EP0207737W WO03008959A1 WO 2003008959 A1 WO2003008959 A1 WO 2003008959A1 EP 0207737 W EP0207737 W EP 0207737W WO 03008959 A1 WO03008959 A1 WO 03008959A1
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WO
WIPO (PCT)
Prior art keywords
gas bubbles
flotation
formation
basin
ultrasonic sensors
Prior art date
Application number
PCT/EP2002/007737
Other languages
German (de)
English (en)
Inventor
Harald Egner
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Publication of WO2003008959A1 publication Critical patent/WO2003008959A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0205—Separation of non-miscible liquids by gas bubbles or moving solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/06—Separation of liquids from each other by electricity
    • 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
    • B03D1/24—Pneumatic
    • B03D1/242—Nozzles for injecting gas into the flotation tank
    • 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
    • B03D3/00—Differential sedimentation
    • B03D3/02—Coagulation
    • B03D3/04—Coagulation assisted by vibrations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/222—Constructional or flow details for analysing fluids
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/465—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/015—Attenuation, scattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02416—Solids in liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02433—Gases in liquids, e.g. bubbles, foams
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/105—Number of transducers two or more emitters, two or more receivers

Definitions

  • the invention relates to a method for monitoring the flotation of particles dispersed in a liquid according to claim 1, a method for flotation according to the independent claim 3 and a device according to the independent claim 10.
  • Flotation is a mechanical separation process in which, with the help of gas bubbles, particles (solid particles, drops, molecules, ions) dispersed in a liquid are formed, which then rise to the surface of the liquid due to their lower density than the liquid and form a separable foam layer, the so-called flotate.
  • the particles to be separated are enriched in the flotate.
  • the connection of particles and gas bubbles is referred to below as an aggregate.
  • Flotation is a process known per se, which is used with great success in the most diverse areas of process engineering.
  • flotation is successfully used in wastewater treatment or soil treatment.
  • soil treatment flotation can be used to separate contaminated solids, preferably light materials, components containing coal or hydrocarbons in a size between 0.02-2 mm.
  • oily phases can be separated or an emulsion can be split and oily sludges can be worked up by means of flotation.
  • Flotation is generally used in combination with other separation or classification processes.
  • the gas bubbles which are introduced into the flotation basin, are essential for the efficiency and effectiveness of the flotation so that they attach to the particles and help them to increase their buoyancy.
  • the spread of the gas bubbles has a significant influence on the effectiveness of the flotation.
  • a disadvantage of the known flotation processes or the flotation apparatus according to the prior art is that the gas bubble formation cannot be monitored directly. It is only possible to recognize, for example, by changing the consistency and the appearance of the flotate, that the gas bubbles and, as a result, the aggregate formation may not take place in the desired manner.
  • large flotation apparatuses there can be a relatively long period of time - from several hours to several days - between the formation of gas bubbles and the occurrence of the flotate formed by these gas bubbles, so that the observation of the flotate is not suitable for in-situ gas bubble formation and its spread to control or regulate. Also, the observation of the flotate cannot be automated, so that, according to the prior art, the regulation of gas bubble formation cannot be automated.
  • the invention has for its object to provide a method for monitoring the gas bubbles during flotation, as well as an improved floatation method and an improved flotation apparatus, which a Enable flotation.
  • the flotation should be controllable with regard to the formation of gas bubbles and thus enable automated process monitoring.
  • This object is achieved according to the invention by a method for monitoring the flotation of particles dispersed in a liquid in a flotation apparatus in which the gas bubbles introduced into the flotation basin are detected by means of one or more ultrasonic sensors and one or more output signals of the ultrasonic sensor or sensors are generated.
  • the gas bubbles can be monitored in situ, so that any irregularities that may occur can be immediately recognized and remedial measures can be taken.
  • the flotation can be further optimized since the spread of the gas bubbles in the flotation basin also has a significant influence on the effectiveness of the flotation.
  • the above-mentioned object is also achieved by a method for flotation of particles dispersed in a liquid in a flotation apparatus with a flotation basin, in which the particles, from which dispersed particles are to be separated, are introduced into the flotation basin, gas bubbles in the flotation basin are generated, the formation of gas bubbles and / or their propagation are detected by means of one or more ultrasonic sensors and one or more output signals of the ultrasonic sensor or sensors are generated, an aggregate is formed from gas bubbles and particles, the aggregate to the surface of the liquid subsequent formation of a flotate rises, the flotate is separated off, the liquid purified from the particles is removed and the gas bubble formation and / or spread is regulated as a function of the output signals generated by the ultrasonic sensor or sensors.
  • this process is also understood to regulate the formation and spread of gas bubbles. Due to the direct detection of the gas bubble formation, a disturbance in the gas bubble formation can be recognized and reacted to immediately, so that the flotation can always take place in a high and constant quality.
  • the automated recording of gas bubble formation and spread can also provide seamless documentation of the flotation process, which makes it easier to prove that the flotation apparatus is operating properly.
  • the gas bubbles are detected immediately after their formation and / or that the spread of gas bubbles is detected in the entire flotation basin, so that, depending on the type and configuration of the flotation plug, the image The spread of gas bubbles and thus also the formation of aggregates can be monitored and controlled.
  • the rate of ascent of the gas bubbles is determined by comparing two or more gas bubble detections at a time interval from one another, the ultrasound sensors used to determine the rate of ascent being arranged in a vertical direction in a particularly advantageous manner.
  • the rate of ascent of the gas bubbles provides further information about the flotation process and thus also enables the flotation to be influenced in a targeted manner with a view to optimizing the process flow.
  • the size of the gas bubbles is inferred from the output signals of the ultrasound sensor or sensors. This can be achieved, for example, by operating an ultrasound sensor with different frequencies or operating several ultrasound sensors at different frequencies, and by determining the size of the gas bubbles or the statistical distribution of the size of the gas bubbles from the reflection behavior of the gas bubbles at different frequencies .
  • the size of the gas bubbles is another important parameter, which has a significant influence on the effectiveness of the flotation, so that by determining the size or the size distribution of the gas bubbles formed, information about the operating state of the flotation apparatus can be obtained. If the size and size distribution of the gas bubbles are not optimal, the desired size range can be set by regulating the gas bubble formation.
  • This variant of the method according to the invention can the flotation also to changing specific properties such as B.
  • Large and density the particles can be easily adjusted during operation so that the flotation can be carried out over a wide range of particles without losing their effectiveness.
  • This process can also be automated by appropriate detection of the particles in the feed to the flotation basin.
  • the method according to the invention and the device according to the invention can be used equally in all types of flotation apparatus.
  • the method according to the invention and the device according to the invention can be used in almost any size of gas bubbles. Gas bubbles with a size of approximately 0.005 mm have already been detected. There is hardly any limit to the size of the detectable gas bubbles from the first and second ultrasonic sensors 29 and 31.
  • FIG. 1 shows a first exemplary embodiment of a flotation apparatus according to the invention
  • Figure 2 shows a second exemplary embodiment of a flotation apparatus according to the invention.
  • a first embodiment of a flotation apparatus according to the invention is shown schematically in cross section. Since flotation apparatuses are known per se, a detailed description of the flotation apparatus is dispensed with in connection with the description of the invention. In principle, it is possible to use the detection of gas bubbles in the flotation basin according to the invention in all types of flotation apparatus.
  • the flotation apparatus designated in its entirety by 1 consists, among other things, of a flotation basin 3 with an inlet 5 and an outlet 7.
  • a liquid, not shown in FIG. 1, in which particles 9 are dispersed, is conveyed into the flotation basin 3 via the inlet 5 , For reasons of clarity, not all particles have been provided with a reference symbol and a connecting line to these reference symbols.
  • flotation reagents (not shown) can be added to feed 5. This process is shown in Fig. 1 indicated by the first arrow 11.
  • the inlet 5 opens into the same in the lower region of the flotation basin 3.
  • a partition 13 is arranged in the flotation basin 3, which forces the liquid conveyed into the flotation basin 3 via the inlet 5 to flow under the partition 13 before it reaches the actual flotation basin 3. This measure ensures that the liquid loaded with particles 9 flows directly past a nozzle 15. Air is introduced into the flotation basin 3 through the nozzle 15, indicated by the second arrow denoted by 17. The resulting gas bubbles are partially provided with the reference number 19 in FIG. 1. When the particles 9 and the gas bubbles 19 approach each other, aggregates form, ie the gas bubbles 19 are stored accumulate on the particles 9 and thus form an aggregate 21.
  • flotate 25 Due to the addition of gas bubbles 19 to the particles 9, the buoyancy forces of the particles 9 increase compared to the state before the accumulation of gas bubbles 19, so that the aggregates 21 slowly rise upwards rise a surface 23 of the liquid, not shown. There, a foam layer forms from the aggregates 21, hereinafter referred to as flotate 25.
  • the flotate 25 can be removed via a flotate discharge 27.
  • the cleaned liquid (not shown) is discharged from the flotation tank 3 via the outlet 7.
  • first ultrasonic sensors 29 and second ultrasonic sensors 31 are provided.
  • the first ultrasound sensors 29 are arranged in the region of the nozzle 15, so that they detect all gas bubbles 19 emerging from the nozzle 15.
  • the first ultrasound sensors 29 can also be arranged differently than shown in FIG. 1 if the formation of the flotation basin and other requirements so require.
  • a statement can be made about the size and number of the gas bubbles 19 generated by the nozzle 15. If the size and number of gas bubbles 19 are not within a predetermined range, the number and size of the gas bubbles can be regulated by a corresponding adjustment of the nozzle 15, so that it is possible with a flotation apparatus 1 according to the invention, size and number of gas bubbles 19 and keeping the quality of the flotation almost constant.
  • second ultrasonic sensors 31 are arranged in the lower area of the flotation basin 3, near a bottom 33.
  • the second ultrasound sensors 31 detect the gas bubbles located above them (not shown). Because of their arrangement, they are particularly suitable for monitoring the spread of the gas bubbles 19.
  • These ultrasound sensors 31 can also be operated at different frequencies, so that they too can be used to analyze the size and size distribution of the gas bubbles 19.
  • a radiation angle 35 of the sensors 31 is indicated by way of example in FIG. 1.
  • the lateral spacing of the second ultrasonic sensors 31 from one another and the number of second ultrasonic sensors 31 and further parameters, the radiation angle 35, the detection range and the spatial resolution of the detection of the spread of the gas bubbles 19 can be adapted to the corresponding application.
  • the output signals of the second ultrasound sensors 31 are evaluated at a time interval from one another. From the difference the output signals give a measure of the rate of ascent of the gas bubbles 19.
  • the rate of ascent is also an important parameter for optimizing the flotation and can be used for optimizing and regulating the flotation apparatus 1.
  • the nozzle 15 has a plate 39 or a stirrer through which the gas bubbles 19 can escape.
  • the dimensions of the plate 39 are selected such that gas bubbles 19 are emitted uniformly over almost the entire base area of the flotation basin 3 and thus a particularly uniform penetration of the contents of the flotation basin 3 with gas bubbles 19 takes place.
  • the aggregate formation in the flotation basin is correspondingly homogeneous.
  • First ultrasound sensors 29 are arranged somewhat above the plate 39.
  • the first ultrasound sensors 29 detect the number and size of the gas bubbles 19 in a plane parallel to the exit area of the gas bubbles 19 from the plate 39.
  • second ultrasound sensors 31 are arranged, which detect 35 gas bubbles 19 within the radiation angle. The ascent rate and / or large and large distribution of the gas bubbles 19 can be detected with the second ultrasound sensors 31.
  • the flotate 25 is removed via a flotate discharge 27.
  • the method according to the invention and the device according to the invention are not limited to the exemplary embodiments according to FIGS. 1 and 2, but can be used in all types of flotation apparatus can be used equally.
  • the use of the method according to the invention is also not restricted to the described arrangements of first ultrasound sensors 29 and second ultrasound sensors 31. Depending on the size and shape of the flotation basin 3, other arrangements can also be useful.
  • the method according to the invention and the device according to the invention can be used in almost any size of gas bubbles 19. Gas bubbles with sizes of approximately 0.005 mm have already been detected. There is hardly any limit to the size of the detectable gas bubbles on the part of the first and second ultrasonic sensors 29 and 31.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Biotechnology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

L'invention concerne un procédé de détection de bulles de gaz dans un appareil de flottation (1). La détection du nombre et de la taille des bulles de gaz (19) est réalisée au moyen de premiers capteurs à ultrasons (29) et de deuxièmes capteurs à ultrasons (31). Ladite détection des bulles de gaz permet de contrôler la flottation in situ et de réguler la formation des bulles de gaz en fonction des signaux de sortie des premiers et deuxièmes capteurs à ultrasons (29, 31). Ainsi, il est possible d'augmenter considérablement la qualité de la flottation. Par ailleurs, il est possible de réguler des états de fonctionnement variables de l'appareil de flottation ou de la granulométrie et d'autres grandeurs parasites de manière à garantir une efficacité quasiment constante de l'appareil de flottation (1).
PCT/EP2002/007737 2001-07-19 2002-07-11 Procede de flottation regulee de particules dispersees dans un liquide et dispositif de mise en oeuvre de ce procede WO2003008959A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10134406A DE10134406C1 (de) 2001-07-19 2001-07-19 Verfahren und Vorrichtung zur geregelten Flotation von in einer Flüssigkeit dispergierten Partikeln
DE10134406.6 2001-07-19

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Publication Number Publication Date
WO2003008959A1 true WO2003008959A1 (fr) 2003-01-30

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WO (1) WO2003008959A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008019983A3 (fr) * 2006-08-16 2008-04-10 Siemens Ag Procédé pour régler l'état fonctionnel d'une cellule de flottaison et cellule de flottation
CN103221816A (zh) * 2010-09-03 2013-07-24 锡德拉企业服务公司 包括用于优化矿物回收的浮选处理和试剂添加的参数的浮选分离处理控制的方法和装置
WO2014188232A1 (fr) * 2013-05-23 2014-11-27 Dpsms Tecnologia E Inovação Em Mineração Ltda Système automatique de colonnes de flottation par mousse avec buses d'injection d'aérateurs et procédé
US9079192B2 (en) 2010-09-29 2015-07-14 Outotec Oy Control method of a flotation machine that is used in metallurgical processes
US9115006B2 (en) 2010-01-14 2015-08-25 Spintek Filtration, Inc. Gas bubble generation for coalescing
CN114713380A (zh) * 2021-10-19 2022-07-08 中国矿业大学 基于超声波和机械阻尼块耦合的粗颗粒浮选装置及方法

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US3622958A (en) * 1968-05-31 1971-11-23 Nat Res Dev Acoustic detection apparatus
US4418565A (en) * 1980-12-03 1983-12-06 Baxter Travenol Laboratories, Inc. Ultrasonic bubble detector
US4763525A (en) * 1986-04-16 1988-08-16 The Standard Oil Company Apparatus and method for determining the quantity of gas bubbles in a liquid
US5152175A (en) * 1990-11-14 1992-10-06 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Energy, Mines & Resources Bubble measurement cell
DE19647512A1 (de) * 1996-11-16 1998-05-20 Damann Franz Josef Mobile Klärvorrichtung
WO1998051618A1 (fr) * 1997-05-10 1998-11-19 Forschungszentrum Jülich GmbH Procede d'elimination de la biomasse dans un liquide a l'aide d'un reacteur

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US5059309A (en) * 1990-06-21 1991-10-22 The United States Of America As Represented By The Secretary Of The Interior Ultrasonic flotation system
DE4311737A1 (de) * 1993-04-08 1994-10-13 Robert Krah Vorrichtung und Verfahren zum kontinuierlichen Messen von Sedimentations- oder Flotationsgeschwindigkeiten

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Publication number Priority date Publication date Assignee Title
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US4418565A (en) * 1980-12-03 1983-12-06 Baxter Travenol Laboratories, Inc. Ultrasonic bubble detector
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WO2008019983A3 (fr) * 2006-08-16 2008-04-10 Siemens Ag Procédé pour régler l'état fonctionnel d'une cellule de flottaison et cellule de flottation
US9115006B2 (en) 2010-01-14 2015-08-25 Spintek Filtration, Inc. Gas bubble generation for coalescing
CN103221816A (zh) * 2010-09-03 2013-07-24 锡德拉企业服务公司 包括用于优化矿物回收的浮选处理和试剂添加的参数的浮选分离处理控制的方法和装置
CN103221816B (zh) * 2010-09-03 2015-08-12 锡德拉企业服务公司 包括用于优化矿物回收的浮选处理和试剂添加的参数的浮选分离处理控制的方法和装置
US9079192B2 (en) 2010-09-29 2015-07-14 Outotec Oy Control method of a flotation machine that is used in metallurgical processes
US9283571B2 (en) 2010-09-29 2016-03-15 Outotec Oyj Method of using a flotation machine that is used in metallurgical processes and a flotation machine
WO2014188232A1 (fr) * 2013-05-23 2014-11-27 Dpsms Tecnologia E Inovação Em Mineração Ltda Système automatique de colonnes de flottation par mousse avec buses d'injection d'aérateurs et procédé
CN114713380A (zh) * 2021-10-19 2022-07-08 中国矿业大学 基于超声波和机械阻尼块耦合的粗颗粒浮选装置及方法
CN114713380B (zh) * 2021-10-19 2022-12-27 中国矿业大学 基于超声波和机械阻尼块耦合的粗颗粒浮选装置及方法

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