EP2415527B1 - Dispositif d'aération pour une cellule de flottation, cellule de flottation et procédé de flottation - Google Patents

Dispositif d'aération pour une cellule de flottation, cellule de flottation et procédé de flottation Download PDF

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Publication number
EP2415527B1
EP2415527B1 EP10171860.9A EP10171860A EP2415527B1 EP 2415527 B1 EP2415527 B1 EP 2415527B1 EP 10171860 A EP10171860 A EP 10171860A EP 2415527 B1 EP2415527 B1 EP 2415527B1
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EP
European Patent Office
Prior art keywords
gas
flotation
longitudinal axis
nozzle
orifice
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.)
Not-in-force
Application number
EP10171860.9A
Other languages
German (de)
English (en)
Other versions
EP2415527A1 (fr
Inventor
Stefan Blendinger
Robert Fleck
Gerold Franke
Lilla Grossmann
Werner Hartmann
Wolfgang Krieglstein
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
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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
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Application filed by Siemens AG filed Critical Siemens AG
Priority to EP10171860.9A priority Critical patent/EP2415527B1/fr
Priority to DK10171860.9T priority patent/DK2415527T3/da
Priority to PL10171860T priority patent/PL2415527T3/pl
Priority to PCT/EP2011/056223 priority patent/WO2012016721A1/fr
Priority to PE2013000194A priority patent/PE20131056A1/es
Priority to US13/814,050 priority patent/US8794446B2/en
Priority to AU2011287891A priority patent/AU2011287891B2/en
Publication of EP2415527A1 publication Critical patent/EP2415527A1/fr
Publication of EP2415527B1 publication Critical patent/EP2415527B1/fr
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Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • B03D1/242—Nozzles for injecting gas into the flotation tank
    • 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
    • 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
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • 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
    • B03D1/1493—Flotation machines with means for establishing a specified flow pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0418—Geometrical information
    • B01F2215/0422—Numerical values of angles

Definitions

  • the invention relates to a gassing device for a flotation cell, a flotation cell equipped with at least one such gassing device, and a method for flotation of valuable particles from a suspension.
  • 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 pneumatic flotation cell with a housing comprising a flotation chamber, with at least one nozzle arrangement, here referred to as ejectors, 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 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 or valuable material particles which are preferably to be separated off are made hydrophobic in the suspension become.
  • xanthates are used as reagents, in particular to selectively hydrophobize sulfidic ore particles.
  • 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 flotation process depends inter alia on the probability of collision between a hydrophobic particle and a gas bubble.
  • a preferred diameter of the gas bubbles is less than about 5 mm and is in particular in the range between 1 and 5 mm.
  • Such small gas bubbles have a high specific surface area and are therefore able to bind and take up significantly more valuable material particles, in particular ore particles, per amount of gas used than larger gas bubbles are capable of doing.
  • gas bubbles larger in diameter increase faster than gas bubbles of smaller diameter.
  • the smaller gas bubbles are collected by larger gas bubbles and combine with them to even larger gas bubbles. This reduces the available specific surface of the gas bubbles in the suspension, can be bound to the valuable particles.
  • hybrid flotation cells which represent a combination of a pneumatic flotation cell with a columnar flotation cell
  • larger particulate matter having particle diameters in the range of 50 microns and larger are not completely bound to the existing gas bubbles and thus can only be partially separated from the suspension. Fines with particle diameters in the range of 20 microns and less, however, are particularly well deposited.
  • Gas bubbles having a diameter in the range from 1 to 5 mm are continuously present in a column-like flotation cell over the height of the flotation chamber, so that a reduction in the diameter of the gas bubbles generated in the lower region of the flotation chamber or by a gassing device in the flotation chamber is required. So far, in the flotation gassing with gas outlet openings are used, whose diameter is in the range of 3 to 5 mm and in columnar flotation cells to gas bubble formation with significantly large gas bubbles, in particular greater than 5 mm in diameter, lead.
  • gas outlet openings with diameters of up to 1 mm on gassing devices easily clog, as long as usually suspensions with solids contents to be processed in the range of 30 to 40%. Even with short downtimes of the flotation cell particles from the suspension penetrate into the gas outlet openings and close them. When restarting the cell, the gas pressure of the gas to be introduced into the suspension is often insufficient to flush such small gas outlet openings of a gassing device freely again.
  • a gassing device for a flotation cell comprising a central gas pipe with a central gas opening, to which connect at least two connecting pipes, each with a connecting gas opening, wherein the connecting pipes are aligned at a right angle ⁇ to a longitudinal axis of the central gas pipe, wherein the central gas opening with wherein each connecting pipe is connected at its end facing away from the central gas pipe with at least one gas injection unit, wherein each gas injection unit comprising a gas supply pipe with a gas supply opening and a gas distributor is formed with a gas distribution chamber into which opens the gas supply opening, wherein the gas distributor further comprises a number of gas distributor nozzles, each having at least one tubular nozzle opening and at least one gas outlet opening, wherein each nozzle opening connected on the one hand to the gas distributor space and on the other hand to at least one gas outlet opening at an end of the gas distributor nozzle facing away from the gas supply tube, the gas distributor nozzles being arranged at a uniform distance from one another about this longitudinal axis L1
  • the arrangement of the gas outlet openings of the gas injection unit makes it possible for a gas to be sprayed into it in a particularly finely distributed manner against a direction of movement R of a suspension. As a result, an intimate mixing of suspension and gas bubbles is ensured, so that the yield of a flotation cell, which is equipped with at least one gassing device according to the invention, is significantly increased.
  • the longitudinal axis L2, L2 'of the nozzle opening and the longitudinal axis L1 of the gas supply tube can lie in one plane per gas distributor nozzle.
  • the longitudinal axis L2, L2 'of each nozzle opening and the longitudinal axis L1 of the gas supply tube are preferably aligned at an angle ⁇ in the range of 30 ° to 70 °, in particular at an angle ⁇ of 45 °, they are not arranged in one plane.
  • the gas outlet opening lies laterally of the longitudinal axis L1 of the gas supply pipe, the longitudinal axis L1 of the gas supply pipe and the longitudinal axis L2, L2 '
  • the nozzle opening in exactly this view in particular an angle ⁇ in the range of> 0 ° to 60 ° limit.
  • the gas distributor preferably has four gas distributor nozzles. As a result, the gas is mixed thoroughly into a suspension. However, it is also possible to provide only two, three or more than four gas distributor nozzles.
  • each gas outlet opening preferably has a diameter in the range of 1 to 5 mm.
  • exclusively gas bubbles with a diameter in the range of 1 to 5 mm are present over the entire height of the flotation chamber in the suspension, which allow optimal separation of the valuable material particles and a high yield.
  • the gassing device has the central gas pipe with a central gas opening, to which at least two connecting pipes each having a connecting gas opening connect, wherein the connecting pipes are aligned at a right angle ⁇ to a longitudinal axis LZ of the central gas pipe, the central gas opening being connected to the connecting gas openings, and wherein each connecting pipe is connected at its end facing away from the central gas pipe with at least one gas injection unit, wherein the connecting gas openings are connected to the nozzle openings.
  • two connecting tubes are arranged symmetrically to the longitudinal axis LZ of the central gas pipe opposite each other on the central gas pipe. This symmetrical embodiment stabilizes the desired position of the gas injector units in the flotation chamber.
  • the longitudinal axis L1 of a gas feed tube is preferably aligned at an angle, in particular a right angle, to a longitudinal axis LV of the respective connecting tube such that an injection of gas via the gas outlet openings is achieved against the direction of movement R of the suspension in the flotation chamber.
  • a gas injector unit is pivotally attached to a connecting pipe to ensure a quick and easy adjustment and optimization of the position of the gas outlet openings against the current direction of movement R of the suspension in a flotation chamber.
  • This can be realized by a fixable in a selected position joint, which is arranged between the connecting pipe and the gas injection unit, and the like.
  • the flotation cell in particular a columnar flotation cell or hybrid flotation cell, 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 gasification device according to the invention for further supply of gas into the flotation by each gas injector unit is disposed in the flotation chamber below the at least one nozzle assembly.
  • At least part of the gas outlet openings is aligned counter to a local direction of movement R of the suspension in the housing, wherein the longitudinal axes L1 of the gas supply pipes are aligned at an angle of 0 ° to a maximum of 90 ° to the local direction of movement R of the suspension in the housing.
  • the flotation cell according to the invention ensures a high separation efficiency and thus a yield of valuable material particles, since the setting of suitable diameters of the gas bubbles in the entire flotation chamber and a particularly intimate mixing of the gas bubbles produced with the suspension can be achieved by means of the at least one gasification device.
  • the flotation cell is preferably a columnar flotation cell in which a diameter of the flotation chamber is many times smaller than its height.
  • it is a hybrid flotation cell formed by a columnar flotation cell combined with a pneumatic flotation cell.
  • the effect of formation of gas bubbles of excessive diameter which is reinforced here due to the columnar construction of these flotation cells, is counteracted by means of the gassing device according to the invention.
  • Already existing flotation cells can be equipped in a simple manner with at least one gassing device according to the invention and thereby their performance can be increased.
  • the housing of the flotation cell has, in a preferred embodiment, a cylindrical housing section whose axis of symmetry is arranged vertically.
  • the central gas pipe is preferably vertical and the connecting pipes are preferably arranged horizontally in the flotation chamber.
  • the connecting pipes are preferably arranged horizontally in the flotation chamber.
  • the longitudinal axes L1 of the gas supply pipes are preferably arranged at an angle in the range of 0 ° to 20 ° to the local direction of movement R of the suspension in the housing in the opposite direction, in order to intensify the mixing of gas bubbles and suspension.
  • gas which is introduced into a flotation chamber in a pneumatic flotation cell by means of the gassing device and / or the nozzle arrangement preference is given to using air or nitrogen.
  • the object is further achieved for the process for flotation of valuable particles, in particular ore minerals, from a suspension having a solids content in the range of 30 to 40% to form a foam product by means of a flotation cell according to the invention.
  • FIG. 1 shows a part 1 of a gassing device 1 "according to FIG. 5 in the front view.
  • FIG. 2 shows the part 1 of the gassing device 1 "according to FIG. 5 in a longitudinal section.
  • the gas injection unit 2 includes a gas supply pipe 2a having a gas supply opening 2a 'and a gas distributor 2b having a gas distribution space 2b ', in which the gas supply opening 2a' opens.
  • the gas distributor 2b further comprises four gas distributor nozzles 2c each having a tubular nozzle opening 2c 'and a gas outlet opening 2d, wherein each nozzle opening 2c' is connected on the one hand to the gas distributor chamber 2b 'and on the other hand to a gas outlet opening 2d on an end of the gas distributor nozzle 2c remote from the gas supply pipe 2a ,
  • four gas distributor nozzles 2c are present here, which are grouped around the same in the direction of the longitudinal axis L1 of the gas supply pipe 2a, at a uniform distance from one another.
  • Each two gas distributor nozzles 2c are arranged opposite one another symmetrically with respect to the longitudinal axis L1 of the gas supply pipe 2a.
  • a longitudinal axis L2, L2 'of each nozzle opening 2c' is oriented at an angle ⁇ of 45 ° to the longitudinal axis L1 of the gas supply pipe 2a in the direction of the end of the gas supply pipe 2a facing away from the gas distributor 2b.
  • a gas 7 flowing into the gas supply pipe 2a flows through the gas supply opening 2a ', passes into the gas distribution space 2b' and then into the nozzle openings 2c 'to finally discharge via the gas outlet openings 2d.
  • FIG. 3 shows a part 1 'in the form of a further gas injection unit 2 of a further gassing device in a longitudinal section, which has a particularly robust embodiment.
  • the same reference numerals as in FIGS. 1 and 2 denote the same elements.
  • the gas injection unit 2 also includes a gas supply pipe 2a having a gas supply port 2a 'and a gas distributor 2b having a gas distribution chamber 2b' into which the gas supply port 2a 'opens.
  • the gas supply pipe 2a is here closed on one side.
  • the gas distributor 2b here comprises four gas distributor nozzles 2c integrated in the closed end of the gas supply tube 2a, each having a tubular nozzle opening 2c 'and a gas outlet opening 2d, wherein each nozzle opening 2c' on the one hand with the gas distributor chamber 2b 'and on the other hand with a gas outlet opening 2d is connected to an end of the gas distributor nozzle 2b facing away from the gas supply pipe 2a.
  • a tapered gas feed tube 2a can be used here and mounted on the top of a cap and secured, wherein the gas distribution chamber 2b ', the gas distributor nozzles 2c with the nozzle openings 2c' and the gas outlet openings 2d due to the contour of the tip and the Contour of the, the tip-facing side of the cap arise.
  • the associated gas outlet opening 2d lies laterally of the longitudinal axis L1 of the gas supply pipe 2a, the longitudinal axis L1 of the gas supply pipe 2a and the longitudinal axis L2, L2 'of the nozzle opening 2c in exactly this view define an angle ⁇ in the range of> 0 ° to 60 °.
  • FIG. 4 shows the further gas injection unit 2 according to FIG. 3 in cross-section from above, wherein the arrangement and orientation of the gas distributor nozzles 2c is clearly visible.
  • FIG. 5 shows a gassing device 1 "in a three-dimensional view
  • the gassing device 1" comprises a central gas pipe 3 with a central gas opening 3a, to which here four connecting pipes 4a, 4b, 4c, 4d, each with a Connecting gas opening 4a ', 4b', 4c ', 4d' connect.
  • the connecting pipes 4a, 4b, 4c, 4d are aligned at a right angle ⁇ to the longitudinal axis LZ of the central gas pipe 3.
  • the central gas opening 3a is connected to the connecting gas openings 4a ', 4b', 4c ', 4d', wherein each connecting pipe 4a, 4b, 4c, 4d at its end facing away from the central gas pipe 3, each with a gas injection unit 2 (see FIGS. 1 and 2) is connected, and wherein the connecting gas openings 4a ', 4b', 4c ', 4d' are connected to the nozzle openings 2c '.
  • the gas injection units 2 can be pivotally mounted on the connecting pipe 4a, 4b, 4c, 4d (see arrows), so that an optimal spatial orientation and rapid adjustment of the positioning of the gas outlet openings 2d with respect to the present in a flotation cell spiraling direction R of the suspension in Area of the gas outlet openings 2d is possible.
  • the gas injection units 2 are preferably aligned with respect to the plane in which the distribution pipes are at an angle of about 20 to 30 ° upwards, provided that the suspension spiral from top to bottom in the flotation 120 (see FIG. 5 ) emotional.
  • FIG. 2 shows a columnar flotation cell 100, here a hybrid flotation cell, with a housing 110 that includes a flotation chamber 120.
  • the left side of the flotation cell 100 is shown in front view, the right side in section.
  • Within the flotation chamber 120 is a foam channel 130 with nozzle 131 for discharging the foam product formed.
  • the flotation chamber 120 is equipped with nozzle arrangements 140 for supplying a mixture 8 of gas, in particular air, and a suspension comprising recyclable material particles to be separated into the flotation chamber 120.
  • the suspension here has a high solids content in the range of 30 to 40%.
  • the housing 110 has a cylindrical housing section 110a, in the center of which the gassing arrangements 1 "according to FIG FIG. 5 is used.
  • the housing 110 also has a Floor discharge opening 150 on.
  • the upper edge of the outer wall of the housing 110 is located above the upper edge of the foam channel 130, whereby an overflow of the foam product formed over the upper edge of the housing 110 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 150 and are discharged via this.
  • additional gas 7, in particular air is blown into the cylindrical housing section 110a, so that further hydrophobic particles are bound thereto and rise.
  • the orientation of at least some of the gas outlet openings 2d of the respective gas injection units 2 in such a way that the gas 7 is injected counter to the spiraling direction of movement R of the suspension ensures intimate mixing of suspension and gas bubbles, so that the yield of the flotation cell 100 is increased.
  • the position of the gas injection units 2 can be changed in the direction of the longitudinal axis LZ of the central tube 3 up or down and thereby optimized.
  • the hydrophilic particles continue to sink and are discharged via the bottom discharge opening 150.
  • the foam product containing the valuable material particles passes from the flotation chamber 120 into the foam channel 130 and is discharged via the nozzles 131 and optionally thickened.
  • FIG. 7 shows the flotation cell 100 in the plan view, wherein the position of the gassing device 1 "in the flotation chamber 120 can be seen.
  • a suspension having a solids content in the range from 30 to 40% comprising particles having a maximum particle diameter is floated.
  • the diameter of the gas outlet openings 2d is in the range of 1 to 5 mm.
  • gassing devices and flotation cells illustrated in the figures merely represent examples of a multiplicity of further possible embodiments of gassing devices according to the invention and of flotation cells provided therewith.
  • a person skilled in the art can also equip other flotation cells with one or a suitable number of gassing devices according to the invention.
  • gas injector units 1, 1 ' can be arranged in the flotation chamber 120 in such a way that the gas supply tube 2a is fastened to the cylindrical housing section 110a and the supply of gas 7 takes place through the cylindrical housing section 110a.
  • suitable flotation cells with regard to the design and arrangement of the flotation, the foam collector, the number of nozzle arrangements for injecting suspension and gas, etc., without departing from the spirit of the invention.
  • the gassing devices may have a different number of gas distributor nozzles, nozzle openings, gas outlet openings, connecting pipes and the like, their arrangement and orientation being able to vary from one another.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Paper (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (11)

  1. Dispositif ( 1" ) d'envoi de gaz pour une cellule ( 100 ) de flottation, comprenant un tube ( 3 ) central à gaz ayant une ouverture ( 3a ) centrale pour du gaz, à laquelle se raccordent au moins deux tubes ( 4a, 4b, 4c, 4d ) de communication ayant respectivement une ouverture ( 4a', 4b', 4c', 4d' ) de communication pour du gaz, les tubes ( 4a, 4b, 4c, 4d ) de communication faisant un angle droit avec un axe LZ longitudinal du tube ( 3 ) central pour du gaz, l'ouverture ( 3a ) centrale pour du gaz communiquant avec les ouvertures ( 4a', 4b', 4c', 4d' ) de communication pour du gaz et chaque tube ( 4a, 4b, 4c, 4d ) de communication communiquant à son extrémité, éloignée du tube ( 3 ) central pour du gaz, avec au moins une unité ( 2 ) d'injection de gaz, chaque unité ( 2 ) d'injection de gaz comprenant un tube ( 2a ) d'apport de gaz ayant une ouverture ( 2a' ) d'apport de gaz et un répartiteur ( 2b ) de gaz ayant une chambre ( 2b' ) de répartiteur de gaz dans laquelle l'ouverture ( 2a' ) d'apport de gaz débouche, le répartiteur ( 2b ) de gaz comprenant en outre un certain nombre de buses ( 2c ) de répartiteur de gaz ayant respectivement au moins une ouverture ( 2c' ) de buse tubulaire et au moins une ouverture ( 2d ) de sortie de gaz, chaque ouverture ( 2c' ) de base communiquant d'une part avec l'espace ( 2b' ) de répartiteur de gaz et d'autre part avec au moins une ouverture ( 2d ) de sortie du gaz à une extrémité, éloignée du tube ( 2a ) d'apport de gaz, de la buse ( 2c ) de répartiteur de gaz, les buses ( 2c ) de répartiteur de gaz étant, considéré dans la direction d'un axe L1 longitudinal du tube ( 2a ) d'apport de gaz, à une distance uniforme les uns des autres autour de cet axe L1 longitudinal et un axe L2, L2' longitudinal de chaque ouverture ( 2c' ) de buse faisant un angle α plus petit que 90° avec l'axe L1 longitudinal du tube ( 2a ) d'apport de gaz dans la direction de l'extrémité, éloignée du répartiteur ( 2b ) de gaz, du tube ( 2a ) d'apport de gaz et les ouvertures ( 4a', 4b', 4c', 4d' ) de communication pour du gaz communiquant avec les ouvertures ( 2c' ) de buse.
  2. Dispositif d'envoi de gaz suivant la revendication 1,
    dans lequel les axes L2, L2' longitudinaux de chaque ouverture ( 2c' ) de buse font un angle α allant de 30° à 70° avec l'axe L1 longitudinal du tube ( 2a ) d'apport de gaz.
  3. Dispositif d'envoi de gaz suivant la revendication 2,
    dans lequel, pour une buse ( 2c ) de répartiteur de gaz, les axes L2, L2' longitudinaux de l'ouverture ( 2c' ) de buse et l'axe L1 longitudinal du tube (2a) d'apport de gaz sont disposés dans un plan.
  4. Dispositif d'envoi de gaz suivant l'une des revendications 1 à 3,
    dans lequel chaque ouverture (2d) de sortie de gaz a un diamètre allant de 1 à 5 millimètres.
  5. Dispositif d'envoi de gaz suivant l'une des revendications 1 à 4,
    dans lequel un tube ( 4a, 4c, 4b, 4d ) de communication sur deux est disposé symétriquement par rapport à l'axe LZ longitudinal du tube ( 3 ) central pour du gaz en opposition l'un à l'autre par rapport au tube ( 3 ) central pour du gaz.
  6. Dispositif d'envoi de gaz suivant l'une des revendications 1 à 5,
    dans lequel l'axe (L1) longitudinal de chaque tube ( 2a ) d'apport de gaz fait un angle, notamment un angle droit, avec un axe LV longitudinal du tube ( 4a, 4b, 4c, 4d ) respectif de communication.
  7. Cellule ( 100 ) de flottation comprenant une enveloppe ( 110 ) ayant une chambre ( 120 ) de flottation, au moins un agencement ( 140 ) de buses pour apporter du gaz et une suspension dans la chambre ( 120 ) de flottation, ainsi qu'au moins un dispositif ( 1" ) d'envoi de gaz suivant l'une des revendications 1 à 6 pour envoyer supplémentairement du gaz dans la chambre ( 120 ) de flottation, chaque unité ( 2 ) d'injection de gaz dans la chambre ( 120 ) de flottation étant disposée en dessous du au moins un agencement ( 140 ) de buses.
  8. Cellule de flottation suivant la revendication 7, qui est constituée en cellule de flottation du type en colonne ou en cellule de flottation hybride.
  9. Cellule de flottation suivant la revendication 7 ou la revendication 8, dans laquelle le tube ( 3 ) central pour du gaz est vertical et les tubes ( 4a, 4b, 4c, 4d ) de communication sont disposés horizontalement dans la chambre ( 120 ) de flottation.
  10. Procédé de flottation de particules de substance de valeur, notamment de minerais, dans une suspension ayant une teneur en matière solide allant de 30 à 40% avec formation d'une mousse au moyen d'une cellule ( 100 ) de flottation suivant l'une des revendications 7 à 9, dans lequel au moins une partie des ouvertures ( 2d ) de sortie du gaz sont orientées dans le sens contraire au sens R local de déplacement de la suspension dans l'enveloppe ( 110 ), les axes ( L1 ) longitudinaux des tubes ( 2a ) d'apport de gaz faisant un angle de 0° à au maximum 90° avec la direction R locale de déplacement de la suspension dans l'enveloppe ( 110 ).
  11. Procédé suivant la revendication 10,
    dans lequel les axes L1 longitudinaux des tubes ( 2a ) d'apport de gaz font un angle allant de 0° à 20° avec la direction R locale de déplacement de la suspension dans l'enveloppe ( 110 ) en sens contraire à celle-ci.
EP10171860.9A 2010-08-04 2010-08-04 Dispositif d'aération pour une cellule de flottation, cellule de flottation et procédé de flottation Not-in-force EP2415527B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP10171860.9A EP2415527B1 (fr) 2010-08-04 2010-08-04 Dispositif d'aération pour une cellule de flottation, cellule de flottation et procédé de flottation
DK10171860.9T DK2415527T3 (da) 2010-08-04 2010-08-04 Gasningsindretning til en flotationscelle, flotationscelle og flotationsfremgangsmåde
PL10171860T PL2415527T3 (pl) 2010-08-04 2010-08-04 Zespół nagazowywania dla przedziału flotacyjnego, przedział flotacyjny i sposób flotacji
PE2013000194A PE20131056A1 (es) 2010-08-04 2011-04-19 Dispositivo de introduccion de gas para una celda de flotacion
PCT/EP2011/056223 WO2012016721A1 (fr) 2010-08-04 2011-04-19 Dispositif de chargement de gaz pour une cellule de flottation
US13/814,050 US8794446B2 (en) 2010-08-04 2011-04-19 Sparging device for a flotation cell
AU2011287891A AU2011287891B2 (en) 2010-08-04 2011-04-19 Sparging device for a flotation cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10171860.9A EP2415527B1 (fr) 2010-08-04 2010-08-04 Dispositif d'aération pour une cellule de flottation, cellule de flottation et procédé de flottation

Publications (2)

Publication Number Publication Date
EP2415527A1 EP2415527A1 (fr) 2012-02-08
EP2415527B1 true EP2415527B1 (fr) 2013-11-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10171860.9A Not-in-force EP2415527B1 (fr) 2010-08-04 2010-08-04 Dispositif d'aération pour une cellule de flottation, cellule de flottation et procédé de flottation

Country Status (7)

Country Link
US (1) US8794446B2 (fr)
EP (1) EP2415527B1 (fr)
AU (1) AU2011287891B2 (fr)
DK (1) DK2415527T3 (fr)
PE (1) PE20131056A1 (fr)
PL (1) PL2415527T3 (fr)
WO (1) WO2012016721A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2415527T3 (da) 2010-08-04 2014-02-10 Siemens Ag Gasningsindretning til en flotationscelle, flotationscelle og flotationsfremgangsmåde
US20150096946A1 (en) * 2012-05-16 2015-04-09 Barry Ross Dunman Separator and method for treatment of a contaminated liquid
KR20230073044A (ko) * 2021-11-18 2023-05-25 주식회사 엘지화학 스파저 및 이를 포함하는 반응기

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1268630A (en) * 1917-05-31 1918-06-04 Joseph P Ruth Jr Aerating device.
US1526596A (en) * 1922-06-09 1925-02-17 William E Greenawalt Apparatus for treating liquids with gases
US1583591A (en) * 1922-06-29 1926-05-04 William E Greenawalt Apparatus for treating liquids with gases
US1579355A (en) * 1923-06-11 1926-04-06 William E Greenawalt Apparatus for treating liquids with gases
GB1272047A (en) * 1971-04-06 1972-04-26 William Ewert Scragg Improvements in and relating to aerators
RU2004138727A (ru) 2004-12-28 2006-06-10 Марк Григорьевич Видуецкий (RU) Флотационная пневматическая колонная машина
DK2415527T3 (da) 2010-08-04 2014-02-10 Siemens Ag Gasningsindretning til en flotationscelle, flotationscelle og flotationsfremgangsmåde

Also Published As

Publication number Publication date
DK2415527T3 (da) 2014-02-10
US20130134101A1 (en) 2013-05-30
EP2415527A1 (fr) 2012-02-08
AU2011287891B2 (en) 2013-11-28
US8794446B2 (en) 2014-08-05
PE20131056A1 (es) 2013-10-04
WO2012016721A1 (fr) 2012-02-09
AU2011287891A1 (en) 2013-02-28
PL2415527T3 (pl) 2014-04-30

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