WO2011128154A1 - Dispositif d'alimentation en gaz pour une cellule de flottation - Google Patents

Dispositif d'alimentation en gaz pour une cellule de flottation Download PDF

Info

Publication number
WO2011128154A1
WO2011128154A1 PCT/EP2011/053264 EP2011053264W WO2011128154A1 WO 2011128154 A1 WO2011128154 A1 WO 2011128154A1 EP 2011053264 W EP2011053264 W EP 2011053264W WO 2011128154 A1 WO2011128154 A1 WO 2011128154A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
screen
baffle plate
lattice
vessel
Prior art date
Application number
PCT/EP2011/053264
Other languages
German (de)
English (en)
Inventor
Stefan Blendinger
Robert Fleck
Gerold Franke
Lilla Grossmann
Werner Hartmann
Wolfgang Krieglstein
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2011128154A1 publication Critical patent/WO2011128154A1/fr

Links

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
    • B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
    • 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
    • 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
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
    • B01F25/31421—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction the conduit being porous
    • 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
    • B03D1/245—Injecting gas through perforated or porous area

Definitions

  • the invention relates to a gassing device for a flotation cell, one with at least one such
  • Fumigation equipped flotation cell as well as a method for flotation of recyclable particles from a suspension.
  • Flotation is a physical separation process for
  • Suspension contained particles It is used for the treatment of mineral resources and in the processing of preferably mineral substances with a low to medium
  • Flotation cell with a housing comprising a flotation chamber, with at least one nozzle arrangement, here as
  • Called aeration devices or aerators as well as a collecting container for a formed during the flotation
  • Reagents mixed suspension of water and fine-grained solid via at least one nozzle assembly in a
  • the reagents should cause, in particular, the valuable, preferably to be separated Particles or recyclable particles are formed hydrophobic in the suspension.
  • xanthates are used as reagents, in particular to hydrophobize sulfidic ore particles selectively.
  • at least one nozzle arrangement is supplied with gas, in particular air, which is mixed with the hydrophobic particles in the air
  • Gas bubble structures also called aeroflakes, 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 is among others of the
  • Collision probability the greater the number of hydrophobic particles that adhere to a gas bubbles, rise to the surface and together with the particles form the foam product.
  • 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
  • Gas bubbles must travel in the suspension or the flotation to get to the surface of the suspension, particularly large. Due to the particularly long way, particularly large gas bubbles are formed in the suspension.
  • 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 .mu.m and larger are not completely bound to the gas bubbles present and thus can only be partially separated from the suspension. Fines with
  • 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, a reduction of the diameter in the lower region of the flotation chamber or by a
  • Fumigation device in the flotation chamber generated gas bubbles 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 a
  • Gas outlet openings of gassing is hardly possible in practice.
  • gas outlet openings with diameters of up to 1 mm clog gassing facilities easy, provided that usually to be processed suspensions are used with solids contents in the range of 30 to 40%. Even with short downtimes of
  • Flotation cell penetrate particles from the suspension into the gas outlet openings and close them.
  • 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.
  • the device comprises a horizontal
  • Baffle plate with a series of openings through which the gas bubbles flow and are further divided.
  • US 4,287,054 A describes a hydraulic-pneumatic flotation device for the separation of minerals in a suspension.
  • the flotation cell plates are provided with openings through which the suspension is supplied with air permeated water. The plates are not used here to control the size of the air bubbles.
  • US 4,152,409 A describes a method for carrying out an oxidation process by means of air and adding fine air bubbles to a liquid.
  • the air is injected into the liquid by means of a nozzle and the mixture of air and liquid is forced through openings in a plate.
  • Apparatus for separating a finely divided phase from a continuous phase by means of counter-rotating turbines It is an object of the invention to provide an improved
  • a gassing device for a flotation cell comprising a vessel with at least one gas inlet opening and a number
  • the screen or lattice-shaped component is arranged in the transport direction of the gas bubbles generated at the gas outlet openings.
  • the gas bubbles pass the sieve or
  • Diameter of the gas outlet openings of the gassing device according to the invention can therefore be chosen so large that a clogging by particles from the suspension is always reliably avoided, for example in the range of at least 3 mm, in particular in the range of 3 to 5mm.
  • Diameter of the gas outlet openings of the gassing device according to the invention can therefore be chosen so large that a clogging by particles from the suspension is always reliably avoided, for example in the range of at least 3 mm, in particular in the range of 3 to 5mm.
  • the sieve-like or lattice-shaped component comprises at least one sieve element in the form of a mesh, fabric, knitted fabric or knitted fabric in order to cut the gas bubbles particularly finely.
  • the mesh Woven, knitted or knitted metal wires and / or
  • Plastic fibers with diameters up to 1 mm are used to form the sharpest and thus most effective separating edge for the impinging gas bubbles.
  • the baffle plate of the at least one gassing device is preferably above the vessel of the at least one in the flotation chamber of the flotation cell
  • a center of the baffle plate and a center of the at least one screen or lattice-shaped component are arranged on a longitudinal axis LA of the vessel.
  • the gassing device has a tube section adjoining the vessel for receiving gas exiting via the gas outlet openings, wherein the baffle plate is assigned to an end of the tube section facing away from the vessel and its plate plane is perpendicular to a tube longitudinal axis of the tube
  • Pipe section is aligned, wherein a center of the baffle plate and a center of the at least one screen or lattice-shaped component lie on the tube longitudinal axis.
  • the suspension penetrates into the
  • the gassing device has at least two screen or lattice-shaped components. These are preferably connected in series such that the gas bubbles successively all existing sieve or lattice-shaped
  • the meshes of the at least two screen or lattice-shaped component not arranged congruent to each other, but rather offset or rotated
  • a screen or lattice-shaped component is advantageously in the optionally present pipe section and / or at the end of the optional pipe section facing away from the vessel
  • At least one modified baffle plate with an opening is present between the vessel and the baffle plate, optionally between the tube section and the baffle plate, wherein a screen or lattice-shaped component is inserted into the opening.
  • the baffle plate optionally between the tube section and the baffle plate, wherein a screen or lattice-shaped component is inserted into the opening.
  • At least one modified baffle plate comprising a screen or lattice-shaped component and at least one further screen or lattice-shaped component, optionally in the region of the pipe section of
  • Gassing device be present. It has proven useful if a diameter of the opening of the at least one modified baffle plate corresponds to at least one pipe diameter of the optionally present pipe section. As a result, a large part of the gas bubbles, the rising from the pipe section, through the screen or lattice-shaped component of the modified baffle plate (s).
  • the sieve-like or grid-shaped component comprises at least one sieve element in the form of a braid, woven fabric, knitted fabric or knitted fabric.
  • the screen or lattice-shaped component may comprise at least one grid element, which is formed from connected tubes, rods or plates.
  • the screen or lattice-shaped component is formed from metal or plastic.
  • Component sieve or grid openings with a diameter in the range of 1 to 10 mm. Impact gas bubbles of larger diameter are reliably cut.
  • the vessel of the gassing device comprises a closed on one side outer tube, which at least one
  • Outer tube is arranged, and wherein an open end of the
  • Outer tube is gas-tight connected to an open end of the at least one inner tube.
  • the at least one gas inlet opening is included
  • Gas inlet opening preferably arranged near the region in which the open ends of the outer tube and the inner tube connected to each other. This measure (s) lead to a good distribution of the gas in the annular gap and an intensive mixing with suspension in a flotation cell.
  • the vessel comprises at least one vane, which in the region between the at least one gas inlet opening and the
  • Gas outlet openings are arranged and steer the injected gas in a desired direction.
  • a vessel comprising an inner tube and an outer tube may be formed with a vane such that the vane on the inside of the outer tube helically extends from one to the other end of the outer tube.
  • an inner tube is present, which is arranged concentrically to the outer tube. This simplifies the design and lowers the manufacturing cost of the gassing device.
  • an optional inner tube is present, which is arranged concentrically to the outer tube. This simplifies the design and lowers the manufacturing cost of the gassing device.
  • an optional inner tube is present, which is arranged concentrically to the outer tube. This simplifies the design and lowers the manufacturing cost of the gassing device.
  • the inner tube has in a particularly preferred
  • Diameter of a gas outlet opening is preferably in the range of 1 to 5 mm.
  • the task is solved for the flotation cell by providing a housing with a flotation chamber, at least one
  • Nozzle arrangement for supplying gas and a suspension into the flotation chamber and at least one gasification device according to the invention for further supply of gas into the flotation chamber, which in the flotation below the at least one nozzle arrangement such
  • Baffle plate runs vertically aligned.
  • the flotation cell according to the invention ensures a high separation efficiency and thus yield of valuable material particles, since by means of the at least one gassing device the
  • Flotation cell is preferably a
  • Hybrid flotation cell which by a columnar
  • the housing of the flotation cell has, in a preferred embodiment, a cylindrical housing section whose axis of symmetry is arranged vertically.
  • Gas supply lines which at least one
  • Supply gas to gasification device are preferably passed through the housing.
  • air or nitrogen is preferably used as gas, which is introduced into a flotation chamber in a pneumatic flotation cell by means of the gassing device and / or the nozzle arrangement.
  • air or nitrogen is preferably used as gas.
  • 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.
  • Gas outlet openings of the gassing device since the gas outlet openings in the presence of a sieve or lattice-shaped component can be dimensioned according large.
  • a suspension comprising particles having a maximum particle diameter is floated, in which a ratio of the maximum particle diameter of the
  • Figures 1 to 12 are exemplary gassing according to the invention, a flotation cell and their
  • 1 shows a first gassing device in front view
  • 2 shows the first gassing device according to FIG. 1 in partial longitudinal section
  • FIG. 3 shows the first gassing device according to FIG. 1 and FIG. 2 in section III-III;
  • FIG. 4 shows the first gassing device according to FIG. 1 and FIG. 2 in section IV - IV;
  • FIG. 6 shows the second gassing device according to FIG. 5 in FIG.
  • 7 shows a third gassing device in the partial longitudinal ⁇ section ;
  • 8 shows a part of the pipe section in which a screen or lattice-shaped component is used;
  • FIG. 12 shows a plan view of the pneumatic flotation cell according to FIG. 11.
  • FIG. 2 shows the first gassing device according to FIG. 1 in a partial longitudinal section.
  • Fumigation device 1 comprises a vessel 2 with a
  • the vessel 2 comprises
  • the inner tube 2d has a closed end 2d 'on one side.
  • the position of the inner tube 2d in the outer tube 2c is shown in FIG 1 by
  • Inner tube 2d has a number of gas outlet openings 2b, see FIG. 2, and is also shown at its open end via a likewise shown in front view
  • the connecting element 2e has a central opening whose diameter corresponds to the inner diameter of the
  • Inner tube 2d corresponds.
  • To the connecting element 2e of the vessel 2 here includes a pipe section 3, which is connected via a flange 3b shown in front view gas-tight with the connecting element 2e.
  • the flange 3b also has a central opening, which is arranged in alignment with the opening of the connecting element 2e.
  • Pipe section 3 associated with a baffle plate 4, whose Plate plane perpendicular to a tube longitudinal axis 3a of the
  • Tube section 3 is aligned.
  • the baffle plate 4 is dimensioned such that the opening 3e of the tube section 3 is covered as seen in the direction of the tube longitudinal axis 3a.
  • the baffle plate 4 may be attached to the pipe section 3, the vessel 2 or on the inner wall of a flotation cell. However, this is not shown in detail here.
  • a center of the baffle plate 4 and a center of the at least one screen or lattice-shaped component 5 lie on the tube longitudinal axis 3a of the
  • suspension to be floated enters the pipe section 3 via the opening 3e and fills it as well as the interior of the inner pipe 2d.
  • a gas 7 in particular in the form of air, is introduced with pressure into the outer pipe 2c.
  • the gap between the outer tube 2c and the inner tube 2d fills with the gas 7.
  • the gas 7 flows through the gas outlet openings 2b in the interior of the inner tube 2d and is in the form of gas bubbles in the suspension
  • the gas outlet openings 2b illustrated in FIG. 2 have a diameter in the range of 3 to 5 mm in order to prevent clogging by particles from the suspension.
  • Inner tube 2 d and the subsequent pipe section 3 ascending gas bubbles pass through the sieve or
  • Diameter is dependent on the mesh size of the screen or lattice-shaped component, via the opening 3e from the pipe section and are against the baffle plate 4th
  • hydrophobized recyclable material per se rise up to the surface of the suspension and form there
  • Foamed product comprising the desired valuable particles.
  • FIG. 3 shows the first gassing device 1 according to FIGS. 1 and 2 in section III-III. Here is the staggered
  • FIG. 4 shows the first gassing device 1 according to FIGS. 1 and 2 in section IV-IV.
  • the screen-like or grid-shaped component 5 completely covers the tube cross-section of the tube section 3.
  • FIG. 5 shows a second gassing device 1 'in partial longitudinal section, in which the inner tube 2c, the
  • the second gassing device 1 has three modified baffle plates 4 a, 4 b, 4 c, which are arranged between the baffle plate 4 and the opening 3 e of the pipe section 3.
  • the baffle plate 4 and the modified baffles 4 c, 4 b may be on the modified baffle plate 4 a, the pipe section 3, the vessel 2 or on the inner wall of a
  • baffle plate 4 for example, with the modified baffle plate 4c
  • Baffle plate 4b may be bolted to the modified baffle plate 4a attached to the pipe section 3.
  • the modified baffle plates 4a, 4b, 4c each have a central opening 6, which are arranged in alignment with the opening 3e of the pipe section and in which a screen or lattice-shaped component 5a is arranged.
  • Grid openings of the respective screen or grid-shaped component 5a exceeds, be divided.
  • the sieve or grid openings of the three screen or grid-shaped components 5a are selected smaller with increasing distance from the opening 3e of the tube section 3, so that the smallest possible gas bubbles in the direction of
  • FIG. 6 shows the second gassing device 1 'in section VI - VI and a plan view of one of the modified
  • grid-shaped component 5a is inserted in the form of a metal wire mesh.
  • the mesh size MW of the metal wire mesh corresponds to the distance between adjacent wires of the fabric.
  • FIGS. 7 shows a third gassing device 1 "in partial longitudinal section, as already shown in FIGS. 2 and 5.
  • FIG 9 Compare here FIG 9, in which an arrangement of the two screen or grid-shaped components 5, 5 'in plan view, in which a rotation of 45 ° to each other is present.
  • the screen or lattice-shaped component 5, which is arranged first in the transport direction of the gas bubbles, preferably has a larger mesh width than the screen or mesh following in the flow direction
  • Baffle plate 4 and the modified baffles 4c, 4b can on the pipe section 3, the vessel 2 or at the
  • Inner wall of a flotation cell, etc. be attached. However, this is not shown in detail here.
  • grid-shaped component 5 is used. If, as shown in Figures 2 and 7, a screen or lattice-shaped member 5 is to be used at some distance from the opening 3e in the pipe section 3e, the pipe section for ease of handling preferably with an insertion opening 3c for
  • a fastening device 3d is provided to the sieve or grid-shaped component 5 in the insertion opening 3e to
  • FIG. 9 shows a view of the two screen-like or grid-shaped components 5, 5 'according to FIG. 7 in plan view and has already been described in more detail with reference to FIG.
  • FIGS. 1 to 8 show a fourth gassing device '' 'in partial longitudinal section, which has no pipe section adjoining the vessel 2 (compare FIGS. 1 to 8). Same
  • the fourth gassing device '' ' comprises a vessel 2 with an outer tube 2c, which has a gas inlet opening 2a for a gas 7 and on one side a closed end 2c'.
  • the vessel 2 further comprises an inner tube 2d, which is arranged inside and concentric with the outer tube 2c.
  • Inner tube 2d has a closed end 2d 'on one side.
  • the inner tube 2d has a number of gas outlet openings 2b, wherein here at least one gas outlet opening is present per square centimeter.
  • the connecting element 2e has a central opening whose diameter corresponds to the inner diameter of the inner tube 2d. In the opening of the connecting element 2e here is a sieve or
  • grid-shaped component 5b used.
  • Baffle plates 4c, 4b with openings 6 present in which screen or lattice-shaped components 5a are used.
  • the vessel 2 is associated with a baffle plate 4, the plate plane perpendicular to a longitudinal axis LA of the
  • Vessel 2 is aligned.
  • the baffle plate 4 is dimensioned such that the opening in the connecting element 2e is covered.
  • Baffle plates 4c, 4d may be on the connecting element 2e, on the vessel 2 or on the inner wall of a flotation cell be attached. However, this is not shown in detail here.
  • Flotation cell (see also FIG 11) is used, floats to be floated on the opening in the connecting element 2e and fills the interior of the inner tube 2d.
  • a gas 7 in particular in the form of air, is introduced with pressure into the outer pipe 2c.
  • the gap between the outer tube 2c and the inner tube 2d fills with the gas 7.
  • the gas 7 flows through the gas outlet openings 2b in the interior of the inner tube 2d and is in the form of gas bubbles in the suspension
  • the gas outlet openings 2b illustrated in FIG. 10 have a diameter in the range of 1 to 5 mm in order to prevent clogging by particles from the suspension.
  • the gas bubbles ascending in the inner tube 2d pass through the sieve-like or grid-shaped component 5b in the connecting element 2e, with gas bubbles in particular having a diameter exceeding the mesh width of the sieve or grid openings of the sieve-like or grid-shaped component 5b being divided.
  • Diameter is dependent on the mesh size of the screen or lattice-shaped component 5b, from the vessel 2 and are guided by the screen and grid-shaped components 5a in the modified baffles 4c, 4b, further divided and finally thrown against the baffle plate 4 and ideally further divided due to the impact and / or intimately mixed with the suspension.
  • the gas bubbles bind hydrophobicized
  • FIG. 11 shows a columnar flotation cell 100, here a hybrid flotation cell, with a housing 110 which has a
  • Flotationshunt 120 includes.
  • Flotation chamber 120 is greater than their height.
  • the left side of the flotation cell 100 is shown in front view, the right side in section.
  • Flotationshunt 120 is a foam channel 130 with nozzle 131 for discharging the foam product formed.
  • the flotation chamber 120 is equipped with at least one nozzle arrangement 140 for supplying gas 8, in particular air, and a suspension 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
  • the housing 110 further has a bottom discharge opening 150.
  • 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 formed
  • gassing devices 1 By means of the gassing devices 1, additional gas 7, in particular air, is blown into the cylindrical housing section 110a, 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 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. 12 shows the flotation cell 100 in plan view, wherein the position of the gassing devices 1 in the flotation chamber 120 can be seen.
  • a suspension having a solids content in the range of 30 to 40% comprising particles having a maximum particle diameter is floated, wherein a ratio of the maximum particle diameter of the particles to a mesh MW of the screen or grid openings of the at least one screen or lattice-shaped component 5 in the respective gassing device 1 in the range of 1: 5 to 1:10. This ensures that the at least one screen or lattice-shaped component 5 can not be clogged by particles of the suspension.
  • Gassing devices and flotation cells are merely examples of a large number of further possible embodiments of gassing devices according to the invention and flotation cells provided with them. A person skilled in the art can also use other flotation cells with one or a suitable number of gassing devices according to the invention

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en gaz (1, 1', 1'', 1''') pour une cellule de flottation (100), comprenant un récipient (2) présentant au moins une ouverture d'entrée de gaz (2a) et une pluralité d'ouvertures de sortie de gaz (2b) pour un gaz (7), et une plaque d'impact (4) associée au récipient (2) qui est agencée de façon que le gaz (7), à sa sortie du récipient, frappe la plaque d'impact (4), et au moins un composant en forme de tamis ou de grille (5, 5', 5a, 5b) perméable au gaz, disposé entre les ouvertures de sortie de gaz (2) et la plaque d'impact (4), parallèlement au plan de la plaque d'impact (4), ledit composant en forme de tamis ou de grille (5, 5', 5a, 5b) comprenant au moins un élément tamis sous forme d'un treillis, d'un tissu, d'un tissu à mailles ou d'un tricot. L'invention concerne en outre une cellule de flottation (100) présentant un tel dispositif d'alimentation en gaz (1, 1', 1'', 1'''), ainsi qu'un procédé de flottation.
PCT/EP2011/053264 2010-04-12 2011-03-04 Dispositif d'alimentation en gaz pour une cellule de flottation WO2011128154A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10159627A EP2377620A1 (fr) 2010-04-12 2010-04-12 Dispositif d'injection de gaz pour une cellule de flottation
EP10159627.8 2010-04-12

Publications (1)

Publication Number Publication Date
WO2011128154A1 true WO2011128154A1 (fr) 2011-10-20

Family

ID=42676891

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/053264 WO2011128154A1 (fr) 2010-04-12 2011-03-04 Dispositif d'alimentation en gaz pour une cellule de flottation

Country Status (2)

Country Link
EP (1) EP2377620A1 (fr)
WO (1) WO2011128154A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117417016A (zh) * 2023-12-19 2024-01-19 成都赢纳环保科技有限公司 一种市政污水处理设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019014700A1 (fr) * 2017-07-17 2019-01-24 Tunra Ltd. Appareil et procédé d'alimentation d'une suspension d'alimentation dans un dispositif de séparation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152409A (en) 1977-02-04 1979-05-01 Dowa Mining Co., Ltd. Method for carrying out air oxidation and for adding fine bubbles to a liquid
US4287054A (en) 1980-05-05 1981-09-01 The Deister Concentrator Co., Inc. Flotation apparatus for concentration of minerals
US4374030A (en) 1981-01-15 1983-02-15 Franklin Jr Grover C Method for separating a dispersed phase from a continuous phase
US5335785A (en) * 1993-05-19 1994-08-09 Board Of Control Of Michigan Technological University Flotation column with adjustable supported baffles
US20030155084A1 (en) * 2000-02-03 2003-08-21 Bernhard Scherzinger Process for aerating dispersions
WO2006069995A1 (fr) 2004-12-28 2006-07-06 Siemens Aktiengesellschaft Colonne de flottation pneumatique comportant un recipient de collecte de mousse
US20080001312A1 (en) 2003-08-21 2008-01-03 Douglas Lee Apparatus and method for producing small gas bubbles in liquids
WO2008090113A1 (fr) * 2007-01-23 2008-07-31 Siemens Ag Österreich Dispositif de séparation de liquide et particules insolubles, finement dispersées dans le liquide

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152409A (en) 1977-02-04 1979-05-01 Dowa Mining Co., Ltd. Method for carrying out air oxidation and for adding fine bubbles to a liquid
US4287054A (en) 1980-05-05 1981-09-01 The Deister Concentrator Co., Inc. Flotation apparatus for concentration of minerals
US4374030A (en) 1981-01-15 1983-02-15 Franklin Jr Grover C Method for separating a dispersed phase from a continuous phase
US5335785A (en) * 1993-05-19 1994-08-09 Board Of Control Of Michigan Technological University Flotation column with adjustable supported baffles
US20030155084A1 (en) * 2000-02-03 2003-08-21 Bernhard Scherzinger Process for aerating dispersions
US20080001312A1 (en) 2003-08-21 2008-01-03 Douglas Lee Apparatus and method for producing small gas bubbles in liquids
WO2006069995A1 (fr) 2004-12-28 2006-07-06 Siemens Aktiengesellschaft Colonne de flottation pneumatique comportant un recipient de collecte de mousse
WO2008090113A1 (fr) * 2007-01-23 2008-07-31 Siemens Ag Österreich Dispositif de séparation de liquide et particules insolubles, finement dispersées dans le liquide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117417016A (zh) * 2023-12-19 2024-01-19 成都赢纳环保科技有限公司 一种市政污水处理设备
CN117417016B (zh) * 2023-12-19 2024-04-05 成都赢纳环保科技有限公司 一种市政污水处理设备

Also Published As

Publication number Publication date
EP2377620A1 (fr) 2011-10-19

Similar Documents

Publication Publication Date Title
DE2614881C2 (de) Verfahren und Vorrichtung zur Trennung von Feststoffen und Flüssigkeit
EP2500102B1 (fr) Dispositif de flottation avec un élément de distribution d'un fluide pouvant générer un courant du fluide vers le collecteur en mousse
WO2011039190A1 (fr) Dispositif, machine de flottation munie de ce dispositif et son procédé d'exploitation
DE4031262C2 (de) Flotationsapparat
DE102011005031A1 (de) Flotationsvorrichtung, Verfahren zum Betreiben der Flotationsvorrichtung sowie deren Verwendung
EP2572778B1 (fr) Machine de flottaison avec une buse de dispersion et procédé de fonctionnementen
EP3183052B1 (fr) Procédé et dispositif pour épurer des suspensions de matières fibreuses par flottation
EP2266704A1 (fr) Machine de flottation pneumatique et procédé de flottation
EP2450106B1 (fr) Appareil de flottation et procédé de flottation
EP2415527B1 (fr) Dispositif d'aération pour une cellule de flottation, cellule de flottation et procédé de flottation
WO2011128154A1 (fr) Dispositif d'alimentation en gaz pour une cellule de flottation
EP1375738B1 (fr) Procédé pour enlever des contaminants d'une suspension aqueuse de fibres
EP0555784A1 (fr) Dispositif de triage des mélanges de solides
EP2142272B1 (fr) Dispositif de flottation doté d'une plaque perforée
WO2009115348A1 (fr) Cellule de flottation pour récupérer des particules de matière de grande valeur
DE102017115645A1 (de) Schaumerzeugungseinrichtung für eine Fahrzeugbehandlungseinrichtung
EP2497575A1 (fr) Dispositif de flottation comprenant un diffuseur de gaz en matériau mousse
DE102008056040A1 (de) Verfahren zur Entfernung von Störstoffen aus einer wässrigen Papierfasersuspension durch Flotation sowie Vorrichtung zu seiner Durchführung
DE3918213C2 (fr)
DE4414272A1 (de) Vorrichtung zur Begasung einer Suspension
EP2676733A1 (fr) Dispositif de séparation de particules magnétiques et/ou magnétisables d'une suspension et son utilisation
EP2623189A1 (fr) Dispositif de gazage pour un dispositif de flottaison, dispositif de flottaison et procédé d'échange d'au moins une unité de sortie de gaz d'un dispositif de gazage
AT504827A1 (de) Vorrichtung zum trennen von flüssigkeit und in der flüssigkeit fein verteilten, nicht-löslichen partikeln
EP0369015A1 (fr) Machine de flottation
AT502186A4 (de) Vorrichtung und verfahren zur flotation einer flüssigkeit

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11706606

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11706606

Country of ref document: EP

Kind code of ref document: A1