EP2572778B1 - Machine de flottaison avec une buse de dispersion et procédé de fonctionnementen - Google Patents

Machine de flottaison avec une buse de dispersion et procédé de fonctionnementen Download PDF

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Publication number
EP2572778B1
EP2572778B1 EP11182473.6A EP11182473A EP2572778B1 EP 2572778 B1 EP2572778 B1 EP 2572778B1 EP 11182473 A EP11182473 A EP 11182473A EP 2572778 B1 EP2572778 B1 EP 2572778B1
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EP
European Patent Office
Prior art keywords
gas
liquid
flotation machine
flotation
nozzle
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.)
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Application number
EP11182473.6A
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German (de)
English (en)
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EP2572778A1 (fr
Inventor
Stefan Blendinger
Robert Fleck
Gerold Franke
Lilla Grossmann
Werner Hartmann
Wolfgang Krieglstein
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Primetals Technologies Germany GmbH
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Primetals Technologies Germany GmbH
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Publication date
Priority to DK11182473.6T priority Critical patent/DK2572778T3/en
Application filed by Primetals Technologies Germany GmbH filed Critical Primetals Technologies Germany GmbH
Priority to EP11182473.6A priority patent/EP2572778B1/fr
Priority to US14/346,827 priority patent/US20140209517A1/en
Priority to CA2849569A priority patent/CA2849569C/fr
Priority to RU2014116269/03A priority patent/RU2603984C2/ru
Priority to CN201280045454.XA priority patent/CN103813851B/zh
Priority to MX2014003477A priority patent/MX2014003477A/es
Priority to BR112014006878-0A priority patent/BR112014006878B1/pt
Priority to PCT/EP2012/066836 priority patent/WO2013041343A1/fr
Publication of EP2572778A1 publication Critical patent/EP2572778A1/fr
Priority to CL2014000685A priority patent/CL2014000685A1/es
Application granted granted Critical
Publication of EP2572778B1 publication Critical patent/EP2572778B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31243—Eductor or eductor-type venturi, i.e. the main flow being injected through the venturi with high speed in the form of a jet
    • 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
    • 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 flotation machine equipped with at least one dispersing nozzle, to a method for operating the flotation machine and to the use thereof.
  • the flotation machine comprises a dispersing nozzle for dispersing a liquid further comprising at least one gas, comprising a gas feed nozzle and a tubular mixing arrangement, which has an inlet region for the at least one gas and the liquid and an outlet region for a gas formed from the at least one gas and the liquid. Has liquid mixture.
  • Dispergierdüsen of the type mentioned are already used in flotation machines, see DE 32 11 906 C2 or CA 2 462 740 A1 and EP 2 308 601 A1 ,
  • the GB 355,211 discloses a flotation process employing a dispersing nozzle into which air is introduced, whereby suspension is drawn into the dispersing nozzle.
  • the US 5,816,446 describes a device for mixing two liquids to prepare a working solution, such as a cleaning solution, from a liquid concentrate and water.
  • 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 minerals.
  • Flotation machines are already well known.
  • the WO 2006/069995 A1 describes a flotation machine with a housing which comprises a flotation chamber, with at least one dispersing nozzle, here referred to as ejector, further with at least one gassing device, when using air aeration devices or aerators called, and a collecting container for a foam product formed in the flotation.
  • a suspension of mostly water and fine-grained solid, mixed with reagents is generally introduced into a flotation chamber.
  • 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 dispersing nozzle is supplied with gas, in particular air or nitrogen, which comes into contact with the hydrophobic particles in the suspension.
  • gassing additional gas is introduced into 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 success of the process of flotation or pneumatic flotation depends inter alia on the probability of collision between a hydrophobic particle and a gas bubble.
  • the collision probability is among other things influenced by the dispersion of suspension and gas in a dispersing nozzle.
  • dispersing nozzles are not only used to supply gas and suspension as a mixture to a flotation chamber. They are also used to disperse liquids with or without a very small proportion of solids with gas and to inject the mixture into the liquid or suspension contained in the flotation machine.
  • a flotation machine comprising a housing with a flotation chamber and at least one dispersing nozzle for dispersing a liquid with at least one further gas, comprising a gas feed nozzle and a tubular mixing arrangement having a common inlet region for the at least one gas and the liquid Exit region for a gas-liquid mixture formed from the at least one gas and the liquid, wherein the mixing arrangement adjoins the Gaszu Fooddüse, the Gaszuzhoudüse tapers in the direction of the mixing assembly and opens into the inlet region, wherein the mixing assembly in the inlet region at least a number N ⁇ 3 at suction openings for the liquid, wherein the suction openings are arranged perpendicular or at an angle to a longitudinal central axis of the dispersing, wherein a ratio of a diameter D G of a gas outlet opening of the gas supply and an inner diameter D M of the mixing arrangement in the inlet region in Range of 1: 3 to 1: 5, and wherein the gas supply nozzle is associated
  • the dispersing nozzle allows an intensive introduction of gas into a suspension, wherein particularly small gas bubbles with diameters of ⁇ 1 mm can be produced with little wear.
  • a gassing of a suspension already in a container or the like is possible.
  • the suspension is sucked into the interior of the mixing arrangement via the suction opening (s).
  • On pumps which promote the suspension under pressure in the mixing arrangement, can be advantageously omitted here.
  • the intensive mixing of gas and liquid within the mixing arrangement of the dispersing nozzle is comparable to mixing in a conventional dispersing nozzle, via which, however, both gas and liquid are supplied.
  • the dispersing nozzle makes it possible to increase the proportion of gas without at the same time increasing the proportion of liquid to be fumigated.
  • the dispersing nozzle is particularly suitable for achieving an increase in the probability of collision between gas bubbles and hydrophobic particles in flotation machines.
  • a ratio of a diameter D G of a gas outlet opening of the gas feed nozzle and an inner diameter D M of the mixing arrangement in the inlet region of the mixing arrangement is in the range from 1: 3 to 1: 5, in particular in the range from 1: 3 to 1: 3.5.
  • the Gaszuzhoudüse is associated with at least one gas control valve for metering a gas quantity of the at least one gas to be supplied to the liquid in order to influence the ratio of gas and liquid in the mixing arrangement and the speed of the gas in the gas outlet opening.
  • the mixing arrangement starting from the gas feed nozzle, is subdivided successively into a mixing chamber which comprises the inlet region, a mixing tube and furthermore a diffuser whose diffuser diameter widens starting from the mixing tube and which comprises the outlet region.
  • the mixing chamber has here the at least one suction opening for liquid.
  • the mixing arrangement can be subdivided, starting from the gas feed nozzle, successively into a mixing tube which comprises the inlet area and furthermore a diffuser whose diffuser diameter widens starting from the mixing tube and which comprises the outlet area.
  • the mixing tube has here the at least one suction opening for liquid.
  • a mechanical connection between the Gaszuzhoudüse and the mixing chamber or the mixing tube by means of at least one connecting element, which is arranged outside or at the periphery of the gas supply and the mixing arrangement.
  • An inner diameter of the mixing tube is either the same size for both embodiments or tapers in the direction of the diffuser.
  • the diffuser is formed curved in a preferred embodiment of the invention. This is advantageous in terms of the space requirement of the dispersing nozzle and leads to the formation of a swirling flow of the gas-liquid mixture formed, which brings about a further improvement in the dispersion of gas and liquid.
  • a ratio of a diameter D MR of a mixing tube inlet opening of the mixing tube and a length L MR of the mixing tube is preferably in the range from 1: 3 to 1: 8, in particular in the range from 1: 4 to 1: 6.
  • the inlet area of the mixing arrangement has at least a number N ⁇ 8 of suction openings through which liquid can be sucked into the interior of the mixing arrangement. This allows a more uniform and faster mixing of the liquid with the gas flowing from the gas supply nozzle.
  • Suction openings are preferably formed with a circular, rectangular or slit-shaped outline.
  • a hole diameter of circular suction openings is formed as a function of the wall thickness of the mixing arrangement in the inlet region.
  • the hole diameter is chosen to be greater than or equal to the wall thickness.
  • the suction opening (s) is / are preferably arranged perpendicular to a longitudinal central axis of the dispersing nozzle, but alternatively An arrangement at an angle to the longitudinal central axis is also possible.
  • a plurality of suction openings are arranged at a uniform distance from one another centered on at least one circular path about the longitudinal center axis of the dispersing nozzle in order to achieve the most uniform all-round supply of liquid to the gas.
  • the gas supply nozzle tapering in the direction of the mixing arrangement preferably has an inner wall which is oriented at an angle ⁇ in the range from 3 ° to 15 °, in particular at an angle ⁇ in the range from 4 ° to 6 °, to the longitudinal central axis of the dispersing nozzle. The speed of the gas and the gas pressure in the region of the gas outlet opening are thereby increased.
  • the dispersing nozzle is preferably used for gassing liquids such as water, waste water, process water, etc.
  • a dispersing nozzle is used for gassing liquids in the form of suspensions in flotation processes.
  • the object is further achieved by a method for operating a flotation machine according to the invention by introducing at least one gas into the mixing arrangement in its inlet region via the gas feed nozzle by sucking liquid into the interior of the mixing arrangement into its inlet region via the suction openings by introducing into the mixing arrangement Gas-liquid mixture is formed and a gas supply via the Gaszuzhoudüse such that the at least one gas at a gas outlet opening of the Gaszuzhoudüse with a pulse current density in the range of 5 * 10 3 to 5 * 10 4 kg / (m * s 2 ) is present , wherein the liquid is a suspension.
  • the pulse current density is in the range of 1 * 10 4 to 5 * 10 4 kg / (m * s 2 ), but especially in the range of 3 * 10 4 to 5 * 10 4 kg / (m * s 2 ).
  • the mixing arrangement comprises a mixing tube, for the gas-liquid mixture at a mixing pipe outlet opening to have a shear rate in the range from 500 to 5000 l / s, in particular from 1000 to 1500 l / s.
  • the higher the shear rate the smaller the gas bubbles generated in the gas-liquid mixture. This further improves the dispersion of gas and liquid.
  • the use of one or more dispersing nozzles on a flotation machine allows intensive mixing of gas into a liquid already present in the flotation machine without introducing further liquid into the flotation machine via the dispersing nozzle (s). As a result, the proportion of gas in the liquid can be increased considerably. The probability of collision between a gas bubble and a particle to be separated from a suspension increases and the yield is increased, the liquid being a suspension.
  • the flotation machine comprises a housing with a flotation chamber into which the at least one dispersing nozzle opens.
  • the mixing arrangement including the suction openings is arranged in particular in the flotation chamber, so that the mixing arrangement is surrounded by suspension and liquid can pass through the suction openings easily and without any auxiliary structures into the interior of the mixing arrangement.
  • the mixing arrangement can also be arranged outside the flotation chamber, although liquid must be conducted to the suction opening (s), for example via an additional pipeline or the like.
  • liquid in the form of water, process water, suspension, etc., in particular of suspension from the flotation chamber can be conducted to the suction openings.
  • the suspension In the case of a dispersion of water or process water with the gas and an injection into the flotation of a flotation machine containing a suspension, the suspension is of course diluted by the additional water or process water.
  • the suspension is of course increased by the further suspension. The achievable number of gas bubbles per unit volume of liquid is thus lower for these cases.
  • the object is achieved for a method for operating a flotation machine according to the invention by filling the flotation chamber with liquid such that the suction openings of the at least one dispersing nozzle are located below a surface formed by the liquid, wherein the liquid is a suspension.
  • the at least one existing dispersing nozzle is preferably operated according to the above-described method of operating the dispersing nozzle according to the invention.
  • the flotation chamber is filled in particular with a suspension having a solids content in the range from 30 to 60%.
  • a suspension having a solids content in the range from 30 to 60%.
  • Such solids contents of suspensions are common, especially in the flotation of ore-containing minerals.
  • a use of a flotation machine according to the invention for segregating an ore of gait has thus proved successful.
  • the flotation machine can also be used in other ways, for example in the flotation of waste water, of suspensions containing other minerals containing ore, for example carbonaceous rock, etc.
  • FIG. 1 shows in longitudinal section a first dispersing 1 for dispersing a liquid 6, in particular suspension 6 ', further comprising at least one gas 7.
  • the first dispersing 1 comprises a Gaszu Fooddüse 2 with a gas outlet opening 2a and a tubular mixing assembly 3, which has an entry area for the at least one Gas 7 and the liquid 6 or suspension 6 'and an outlet region 1a for a from the at least one gas 7 and the liquid 6 or suspension 6' formed gas-liquid mixture 8 has.
  • the gas feed nozzle 2 is preceded by at least one gas control valve, not shown here for the sake of clarity, for metering a gas quantity of the gas 7 to be supplied to the liquid 6.
  • the mixing arrangement 3 follows the Gaszu Magazinedüse 2 on.
  • the gas feed nozzle 2 tapers in the direction of the mixing arrangement 3 and opens into its inlet region.
  • the mixing arrangement 3 further has in the inlet area a plurality of suction openings 4 for the liquid 6 or suspension 6 '.
  • the suction openings 4 are arranged here perpendicular to a longitudinal central axis 9 of the first dispersing nozzle 1.
  • the mixing arrangement 3 in this embodiment, starting from the gas feed nozzle 2, successively into a mixing chamber 3a, which comprises the inlet region, a mixing tube 3b with a Mischrohraustrittsö réelle 5 and further a diffuser 3c, the diffuser diameter expands starting from the mixing tube 3b and which comprises the outlet region 1a , divided.
  • the mixing chamber 3a and the mixing tube 3b can also be formed in one piece.
  • the mixing tube 3b and the diffuser 3c or else the mixing chamber 3a, the mixing tube 3b and the diffuser 3c may be integrally formed.
  • FIG. 2 shows an enlarged section of the first dispersing 1 according to FIG. 1 in the area of the gas feed nozzle 2.
  • the gas supply nozzle 2 here has an inner wall which is oriented at an angle ⁇ of 4 ° to the longitudinal central axis 9 of the first dispersing nozzle 1.
  • a ratio of a diameter D G of the gas outlet opening 2a of the gas feed nozzle 2 and an inner diameter D M of the mixing arrangement 3 in the inlet region, here simultaneously the inner diameter of the mixing chamber 3a, is approximately 1: 3 to 1: 5.
  • a ratio of a diameter D MR of a mixing tube inlet opening of the mixing tube 3b and a length L MR of the mixing tube 3b is approximately 1: 5.
  • FIG. 3 shows the principle of operation of a dispersing nozzle with a mixing arrangement 3 with curved diffuser 3c. Same reference numerals as in FIG. 1 identify similar elements.
  • a curved diffuser 3c reduces the dimensions of the dispersing nozzle and allows its use even in confined spaces spatial conditions.
  • the formed gas-liquid mixture 8 a swirling motion is impressed, which leads to a further improvement of the dispersion of gas 7 and liquid 6 or suspension 6 '.
  • FIG. 4 shows a second dispersing nozzle 1 'with curved diffuser 3c in a side view.
  • the same reference numerals as in FIGS. 1 and 3 designate the same elements.
  • FIG. 5 shows a flotation machine 100 with a known per se construction in partial longitudinal section, the right half is shown cut.
  • the flotation machine 100 comprises a housing 101 with a flotation chamber 102 into which at least one conventional dispersing nozzle 10 for supplying gas 7 and suspension 6 'opens into the flotation chamber 102.
  • the installation of conventional dispersing nozzles 10 is usually carried out in such a way that the longitudinal axis of the dispersing nozzle (s) 10 is aligned horizontally.
  • the housing 101 has a cylindrical housing section 101a, at the lower end of which a gassing arrangement 103 is optionally arranged.
  • the upper edge of the outer wall of the housing 101 is located above the upper edge of the foam channel 104, whereby an overflow of the foam product on the upper edge of the housing 101 is excluded.
  • the housing 101 further has a bottom discharge opening 106. Particles of the suspension 6 ', 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 106 and are discharged.
  • the foam product passes from the flotation chamber 102 in the foam channel 104 and is discharged via the nozzle 105 and optionally thickened.
  • dispersing nozzles 1,1 ' via which only gas 7 is introduced into the flotation chamber 102, which is dispersed with suspension 6' already present in the flotation chamber 102, preferably takes place here in such a way that the longitudinal central axis 9 of the dispersing nozzle 1, 1 'is aligned horizontally. But also an arrangement of dispersing nozzles 1,1 'on the flotation machine 100 at an angle of the longitudinal central axis 9 to the horizontal is possible.
  • additional gas 7 is optionally blown into the cylindrical housing section 101a, so that further hydrophobic particles are bound thereto and rise. Ideally, especially the hydrophilic particles continue to sink and are discharged via the bottom discharge opening 106.
  • the dispersion of suspension 6' and gas 7 is further improved, thus increasing the probability of collision between a gas bubble and a particle to be separated from the suspension 6 '.
  • increased deposition rates and an optimal foam product can be achieved.
  • a curved construction of the mixing arrangement 3 as a whole is space-saving and therefore also optimally usable in the interior of a flotation chamber with a small diameter.
  • a dispersing nozzle is not general to a flotation machine according to the invention or a flotation machine having a structure according to FIG. 5 limited.
  • a dispersing nozzle can be used in flotation systems of any structure or equipment in which at least one gas is to be finely and evenly distributed in a liquid.
  • the dispersing nozzle can thus be used regardless of a preferred application in flotation machines for fumigation of water, sewage, process water, etc.

Claims (20)

  1. Machine de flottaison (100) comprenant un logement (101) avec un compartiment de flottaison (102) et au moins une buse de dispersion (1, 1') destinée à la dispersion d'un liquide (6) avec en outre au moins un gaz (7), comprenant une buse d'amenée de gaz (2) et un agencement de mélange tubulaire (3), qui présente une zone d'entrée pour l'au moins un gaz (7) et le liquide (6) et une zone de sortie (1a) pour un mélange de gaz et de liquide (8) formé à partir de l'au moins un gaz (7) et du liquide (6), dans laquelle l'agencement de mélange (3) se raccorde à la buse d'amenée de gaz (2), dans laquelle la buse d'amenée de gaz (2) se rétrécit dans la direction de l'agencement de mélange (3) et débouche dans la zone d'entrée de celui-ci, dans laquelle l'agencement de mélange (3) présente dans la zone d'entrée au moins un nombre N ≥ 3 d'ouvertures d'aspiration (4) pour le liquide (6), dans laquelle les ouvertures d'aspiration (4) sont disposées perpendiculairement ou selon un angle par rapport à un axe central longitudinal (9) de la buse de dispersion (1, 1'), dans laquelle un rapport entre un diamètre DG d'une ouverture de sortie de gaz (2a) de la buse d'amenée de gaz (2) et un diamètre interne DM de l'agencement de mélange (3) dans la zone d'entrée se situe dans la plage de 1/3 à 1/5, et dans laquelle à la buse d'amenée de gaz (2) est associée au moins une soupape de régulation de gaz pour le dosage d'une quantité de gaz de l'au moins un gaz (7) à amener au liquide (6), dans laquelle le liquide est une suspension (6'), dans laquelle l'au moins une buse de dispersion (1, 1') débouche dans le compartiment de flottaison (102).
  2. Machine de flottaison selon la revendication 1, dans laquelle l'agencement de mélange (3) est divisé en partant de la buse d'amenée de gaz (2) tour à tour en un compartiment de mélange (3a), lequel comprend une zone d'entrée, un tube de mélange (3b) et en outre un diffuseur (3c), dont le diamètre de diffuseur s'élargit en partant du tube de mélange (3b) et lequel comprend la zone de sortie (1a).
  3. Machine de flottaison selon la revendication 1, dans laquelle l'agencement de mélange (3) est divisé en partant de la buse d'amenée de gaz (2) tour à tour en un tube de mélange (3b), lequel comprend une zone d'entrée, et en outre un diffuseur (3c), dont le diamètre de diffuseur s'élargit en partant du tube de mélange (3b), et lequel comprend la zone de sortie (1a).
  4. Machine de flottaison selon l'une des revendications 2 ou 3, dans laquelle un rapport entre un diamètre DMR d'une ouverture d'entrée de tube de mélange du tube de mélange et une longueur LMR du tube de mélange se situe dans la plage de 1/3 à 1/8.
  5. Machine de flottaison selon l'une des revendications 2 ou 3, dans laquelle le diffuseur (3c) est configuré coudé.
  6. Machine de flottaison selon l'une des revendications 1 à 5, dans laquelle la zone d'entrée présente au moins un nombre N ≥ 8 d'ouvertures d'aspiration (4).
  7. Machine de flottaison selon l'une des revendications 1 à 6, dans laquelle les ouvertures d'aspiration (4) sont disposées centrées à une distance égale les unes des autres sur au moins une piste circulaire autour de l'axe central longitudinal (9) de la buse de dispersion (1, 1').
  8. Machine de flottaison selon l'une des revendications 1 à 7, dans laquelle la buse d'amenée de gaz (2) qui se rétrécit dans la direction de l'agencement de mélange (3) présente une paroi interne, qui est orientée selon un angle α dans la plage de 3 à 15°, en particulier selon un angle α dans la plage de 4 à 6°, par rapport à l'axe central longitudinal (9) de la buse de dispersion (1, 1').
  9. Machine de flottaison selon l'une des revendications 1 à 8, dans laquelle les ouvertures d'aspiration (4) présentent un diamètre de trou circulaire.
  10. Machine de flottaison selon la revendication 9, dans laquelle le diamètre de trou est choisi pour être supérieur ou égal à une épaisseur de paroi de l'agencement de mélange (3) dans la zone d'entrée.
  11. Procédé destiné à exploiter une machine de flottaison (1, 1') selon l'une des revendications 1 à 10, dans lequel via la buse d'amenée de gaz (2) au moins un gaz (7) est introduit dans l'agencement de mélange (3) dans la zone d'entrée de celui-ci, dans lequel via l'au moins une ouverture d'aspiration (4) un liquide (6) est aspiré à l'intérieur de l'agencement de mélange (3), dans lequel dans l'agencement de mélange (3) est formé un mélange de gaz et de liquide (8) et dans lequel il s'ensuit une amenée de gaz via la buse d'amenée de gaz (2) de telle sorte que l'au moins un gaz (7) est présent au niveau d'une ouverture de sortie de gaz (2a) de la buse d'amenée de gaz (2) avec une densité de courant d'impulsion dans la plage de 5.103 à 5.104 kg/(m.s2), dans lequel le liquide est une suspension (6').
  12. Procédé selon la revendication 11,
    caractérisé en ce que la densité de courant d'impulsion se situe dans la plage de 1.104 à 5.104 kg/(m.s2).
  13. Procédé selon la revendication 12,
    caractérisé en ce que la densité de courant d'impulsion se situe dans la plage de 3.104 à 5.104 kg/(m.s2).
  14. Procédé selon l'une des revendications 11 à 13, dans lequel l'agencement de mélange (3) comprend un tube de mélange (3b), dans lequel pour le mélange de gaz et de liquide (8) un taux de cisaillement se situe au niveau d'une ouverture de sortie de tube de mélange (5) dans la plage de 500 à 5000 1/s, en particulier de 1000 à 1500 1/s.
  15. Machine de flottaison selon l'une des revendications 1 à 10, dans laquelle l'agencement de mélange (3) incluant les ouvertures d'aspiration (4) est disposé dans le compartiment de flottaison (102).
  16. Machine de flottaison selon l'une des revendications 1 à 10 ou 15, dans laquelle l'axe central longitudinal (9) de l'au moins une buse de dispersion (1, 1') est orienté horizontalement.
  17. Procédé pour l'exploitation d'une machine de flottaison (100) selon l'une des revendications 1 à 10, 15 ou 16, dans lequel le compartiment de flottaison (102) est rempli avec le liquide (6) de telle sorte que les ouvertures d'aspiration (4) de l'au moins une buse de dispersion (1) se trouvent sous une surface formée par le liquide (6), dans lequel le liquide est une suspension (6').
  18. Procédé selon la revendication 17, dans lequel l'au moins une buse de dispersion (1, 1') est exploitée conformément à un procédé selon l'une des revendications 11 à 14.
  19. Procédé selon l'une des revendications 17 ou 18, dans lequel le compartiment de flottaison (102) est rempli avec une suspension (6') avec une teneur en matières solides dans la plage de 30 à 60 %.
  20. Utilisation d'une machine de flottaison (100) selon l'une des revendications 1 à 10, 15 ou 16 pour isoler un minerai d'une gangue.
EP11182473.6A 2011-09-23 2011-09-23 Machine de flottaison avec une buse de dispersion et procédé de fonctionnementen Active EP2572778B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP11182473.6A EP2572778B1 (fr) 2011-09-23 2011-09-23 Machine de flottaison avec une buse de dispersion et procédé de fonctionnementen
DK11182473.6T DK2572778T3 (en) 2011-09-23 2011-09-23 Flotation machine with a dispersing nozzle and method for operating it
CA2849569A CA2849569C (fr) 2011-09-23 2012-08-30 Buse a dispersion, machine de flottation equipee de ladite buse et procede de fonctionnement de ladite machine de flottation
RU2014116269/03A RU2603984C2 (ru) 2011-09-23 2012-08-30 Диспергирующая форсунка, оснащенная ею флотационная установка, а также способ ее эксплуатации
CN201280045454.XA CN103813851B (zh) 2011-09-23 2012-08-30 分散喷嘴、配有分散喷嘴的浮选机及其运行方法
MX2014003477A MX2014003477A (es) 2011-09-23 2012-08-30 Tobera de dispersion, maquina de flotacion equipada con la misma, asi como procedimiento para su funcionamiento.
US14/346,827 US20140209517A1 (en) 2011-09-23 2012-08-30 Dispersion nozzle, flotation machine equipped therewith, and method for operating same
BR112014006878-0A BR112014006878B1 (pt) 2011-09-23 2012-08-30 Máquina de flotação, método para a operação de uma máquina de flotação e uso de uma máquina de flotação
PCT/EP2012/066836 WO2013041343A1 (fr) 2011-09-23 2012-08-30 Buse à dispersion, machine de flottation équipée de ladite buse et procédé de fonctionnement de ladite machine de flottation
CL2014000685A CL2014000685A1 (es) 2011-09-23 2014-03-20 Una tobera de dispersion para dispersar un liquido, comprende una tobera de alimentacion de gas, una disposicion mezcladora tubular con una zona de entrada y otra de salida, en la zona de entrada al menos 3 orificios de aspiracion para el liquido, dispuestos en la direccion perpendicular o en un angulo respecto a un eje central longitudinal de la tobera de dispersion; procedimiento, y maquina de flotacion.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11182473.6A EP2572778B1 (fr) 2011-09-23 2011-09-23 Machine de flottaison avec une buse de dispersion et procédé de fonctionnementen

Publications (2)

Publication Number Publication Date
EP2572778A1 EP2572778A1 (fr) 2013-03-27
EP2572778B1 true EP2572778B1 (fr) 2017-03-08

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EP11182473.6A Active EP2572778B1 (fr) 2011-09-23 2011-09-23 Machine de flottaison avec une buse de dispersion et procédé de fonctionnementen

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US (1) US20140209517A1 (fr)
EP (1) EP2572778B1 (fr)
CN (1) CN103813851B (fr)
BR (1) BR112014006878B1 (fr)
CA (1) CA2849569C (fr)
CL (1) CL2014000685A1 (fr)
DK (1) DK2572778T3 (fr)
MX (1) MX2014003477A (fr)
RU (1) RU2603984C2 (fr)
WO (1) WO2013041343A1 (fr)

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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
CN103506227B (zh) * 2013-09-27 2015-04-29 北京科技大学 一种脉冲喷射式泡沫浮选机
DE102013220361A1 (de) * 2013-10-09 2015-04-09 Siemens Aktiengesellschaft Verfahren zur Erzeugung eines dispergierten Fluidgemischs
US9950328B2 (en) * 2016-03-23 2018-04-24 Alfa Laval Corporate Ab Apparatus for dispersing particles in a fluid
CN108339673B (zh) * 2018-02-10 2023-11-21 内蒙古科灵时代矿业技术有限公司 一种空化射流浮选气泡发生器及浮选装置
CN108993185B (zh) * 2018-09-20 2023-12-15 江苏新宏大集团有限公司 一种进料喷嘴混合管

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Also Published As

Publication number Publication date
US20140209517A1 (en) 2014-07-31
CN103813851A (zh) 2014-05-21
CL2014000685A1 (es) 2014-10-10
CN103813851B (zh) 2016-08-24
DK2572778T3 (en) 2017-06-06
BR112014006878A8 (pt) 2018-04-03
MX2014003477A (es) 2014-05-21
WO2013041343A1 (fr) 2013-03-28
BR112014006878A2 (pt) 2017-04-04
BR112014006878B1 (pt) 2020-10-06
RU2014116269A (ru) 2015-10-27
CA2849569C (fr) 2019-09-17
CA2849569A1 (fr) 2013-03-28
RU2603984C2 (ru) 2016-12-10
EP2572778A1 (fr) 2013-03-27

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