EP2450106B1 - Appareil de flottation et procédé de flottation - Google Patents

Appareil de flottation et procédé de flottation Download PDF

Info

Publication number
EP2450106B1
EP2450106B1 EP10189809.6A EP10189809A EP2450106B1 EP 2450106 B1 EP2450106 B1 EP 2450106B1 EP 10189809 A EP10189809 A EP 10189809A EP 2450106 B1 EP2450106 B1 EP 2450106B1
Authority
EP
European Patent Office
Prior art keywords
flotation
chamber
pulp
mixing device
flotation apparatus
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.)
Active
Application number
EP10189809.6A
Other languages
German (de)
English (en)
Other versions
EP2450106A1 (fr
Inventor
Lilla Grossmann
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.)
Primetals Technologies Germany GmbH
Original Assignee
Primetals Technologies Germany GmbH
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
Priority to EP10189809.6A priority Critical patent/EP2450106B1/fr
Application filed by Primetals Technologies Germany GmbH filed Critical Primetals Technologies Germany GmbH
Priority to RU2013125233/03A priority patent/RU2013125233A/ru
Priority to US13/883,378 priority patent/US9475066B2/en
Priority to BR112013010901A priority patent/BR112013010901B1/pt
Priority to CN201180052681.0A priority patent/CN103313796B/zh
Priority to AU2011325285A priority patent/AU2011325285A1/en
Priority to PCT/EP2011/068937 priority patent/WO2012059415A1/fr
Publication of EP2450106A1 publication Critical patent/EP2450106A1/fr
Application granted granted Critical
Publication of EP2450106B1 publication Critical patent/EP2450106B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • 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
    • B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
    • 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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1456—Feed mechanisms for the slurry
    • 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
    • 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
    • B03D1/16—Flotation machines with impellers; Subaeration machines
    • B03D1/20—Flotation machines with impellers; Subaeration machines with internal air pumps
    • 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
    • B03D1/16—Flotation machines with impellers; Subaeration machines
    • B03D1/22—Flotation machines with impellers; Subaeration machines with external blowers
    • 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
    • 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
    • B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
    • 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
    • B03D1/1418—Flotation machines using centrifugal forces
    • 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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1475—Flotation tanks having means for discharging the pulp, e.g. as a bleed stream
    • 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
    • B03D1/16—Flotation machines with impellers; Subaeration machines

Definitions

  • the invention relates to a flotation apparatus with a stirrer as a disperser and a flotation.
  • a flotation apparatus with a stirrer as a disperser and a flotation.
  • Known flotation apparatuses include a flotation chamber bounded by a sidewall and a bottom, a pulp inlet, an agitator, an agitator associated with the agitator, and a foam collecting means for a flotation product formed at the top of the flotation chamber.
  • the flotation is a physical separation process for the separation of a particle mixture due to different surface wettability of the particles.
  • a gas such as air or nitrogen is introduced into the particle mixture present in the form of an aqueous suspension, the pulp, with the aid of the aeration device.
  • the turbid flotation chemicals continue to be used to hydrophobize the surface of the useful particles, in a raw ore ore particles.
  • the gas bubbles present in the slurry remain adhered to the hydrophobic particles, with the addition of adducts, also called aeroflakes, which rise upwards and accumulate as a foam product on the pulp and can be discharged from there.
  • the pulp In order for aeroblocks to form, the pulp must be mixed with the help of a mixing device, the above agitator in turbulence, so that the gas is dispersed in the pulp and collisions between gas bubbles and particles can take place. Not every collision leads to the formation of an aerofoil.
  • the formation of an adduct from a small gas bubble with a small particle requires one collision taking place at a relatively high kinetic energy, ie the particle must reach a high level from the mixing device Speed to be accelerated.
  • this this would at best be achieved with high energy expenditure and high material wear, which would make the flotation process uneconomical.
  • Flotation apparatus with stirrer as a mixing device are therefore operated with lower energy input so that the adjusting hydrodynamic conditions favors the separation of particle fractions with on average larger diameters.
  • finer particles form adducts at most to a small extent and remain behind in the residual pulp.
  • the residual pulp is usually treated in further downstream flotation, which is associated with appropriate procedural and equipment expense.
  • One advantage of the invention lies in the fact that there are two substantially independently operating mixing devices with which a gas in the form of gas bubbles and particles with high turbulence in the slurry are dispersible.
  • the respective turbulence zones are spatially separated from one another such that a mutual influence of the adducts forming there due to the prevailing hydrodynamic conditions is practically excluded. Therefore, a two-stage flotation is possible within one and the same flotation chamber, wherein the first flotation stage comprises one or more first mixing devices and the second flotation stage comprises the agitator and the gassing device associated therewith.
  • Different hydrodynamic conditions can be generated in the respective turbulence zones, with the possibility, in principle, of simultaneously obtaining different particle fractions in a flotation apparatus or with a flotation method carried out in a single flotation apparatus or in its flotation chamber.
  • particles having a broader size spectrum than in the known flotation apparatus can thus be converted into the foam product, so that correspondingly higher yields can be achieved and subsequent flotation steps are required unnecessarily or only to a reduced extent.
  • an ejector is used as the first mixing device.
  • Ejectors are known per se in the field of flotation and for example in the European Patent Application No. 09171568.0 described. It is, as will be explained in more detail below, to a device for dispersing a gas in a slurry, comprising - seen successively in the flow direction of the suspension - a tapered in the flow direction suspension nozzle, a mixing chamber into which the suspension nozzle flows, a adjoining the mixing chamber and a flow tube tapering in the flow direction. Furthermore, a gas supply line for supplying a gas into the mixing chamber is present. With the help of an ejector, a large amount of gas can be introduced into the pulp and distributed in the form of very many predominantly small gas bubbles.
  • adducts of small bubbles and particles of rather smaller size are formed.
  • the adducts rise up in the flotation chamber without entering the turbulence zone of the agitator and being at risk of collapsing by collision with a particle.
  • they can float upwards practically without such an impairment and be discharged by means of a foam collecting device, preferably a foam collecting container enclosing the flotation chamber with radial spacing.
  • FIG. 1-6 Flotation apparatuses 1 shown comprise a flotation chamber 2, a foam collecting device 5 and four at a mutual distance in the circumferential direction of the flotation chamber 2 arranged feed lines 6, each comprising a first mixing means M1 in the form of an ejector 7 and in which such an ejector is integrated.
  • a second, a stirrer 3 and a stirrer 3 associated with the gassing device 4 comprehensive second mixing device M2 is arranged.
  • the flotation chamber 2 is bounded by a side wall 8 with a circular cross-sectional shape and a bottom 9.
  • the agitator 3 designed, for example, as a stator-rotor system is arranged on the bottom 9 of the flotation chamber 2 or in its lower region. It is connected via a hollow shaft 10 with a drive unit 13, which comprises, for example, an electric motor 14 and a transmission 15 connecting this to the hollow shaft.
  • the foam collecting device 5 is configured as a foam collecting container 16 which encompasses the side wall 8 with a radial spacing, on which a discharge nozzle 17 for discharging a foam product is available.
  • the ejectors 7 together form a first flotation stage and the agitator 3 with the associated gassing 4 a second flotation.
  • the feed lines 6 are arranged on the side wall 8 of the flotation chamber 2 such that their end section 11 connected to the flotation chamber 2 or the flow direction 18 of a slurry flowing through the end sections 11 run tangentially to the flotation chamber 2 or to its cylindrical side wall 8.
  • the feed lines 6 open at a above the agitator 3 near the upper edge 19 of the side wall 8 arranged point 19 in the flotation chamber 2. Between the mouth of the feed lines 6 and the agitator 3 is thus a vertical distance exists.
  • An ejector 7 comprises as an essential component nozzle, hereinafter referred to as suspension nozzle 25, from the mouth of which the slurry exits at high speed, wherein introduced in the mouth region, a gas or is sucked in because of a negative pressure existing there. The gas enters the turbidity stream leaving the suspension nozzle and is dispersed therein in the form of fine gas bubbles.
  • the in the FIG. 7 injector 7 shown schematically has a tubular housing 23, which is penetrated in the longitudinal or axial direction of a cavity 24.
  • An input-side section of the cavity 24 is designed as a suspension nozzle 25, which tapers in the flow direction of a slurry flowing through the ejector 7.
  • the suspension nozzle 25 is followed by a mixing chamber 26, which is designed, for example, in the manner of a cylindrical bore. Between the suspension nozzle 25 and the mixing chamber 26, an opening 27 is present. Through this opening 27, a gas, such as air or nitrogen, can be supplied via a gas line 28 of the slurry. The gas passes into the mixing chamber 26. The effect of the suspension nozzle forms a turbulence zone 31 in the mixing chamber 26, in which the gas collides in the form of predominantly small gas bubbles with particles of the pulp. Input and output side is a flange 29 at the ejector 7, wherein on a flange 29, a pipe section 30 is attached, which is part of the feed line 6.
  • a gas such as air or nitrogen
  • the flotation apparatus 1 described above operates as follows:
  • the flotation chamber 2 is filled with an aqueous pulp, for example a raw-material slurry.
  • the rotating agitator 3 of the second flotation stage generates a turbulence zone 34 indicated by the arrows 33.
  • a gas is introduced into the flotation chamber 2 via the gassing device 4, which is essentially formed by the interior 35 of the hollow shaft 10 which is open at its lower end
  • gassing device 4 By the rotational movement of the agitator 3 gas bubbles in the pulp, in particular in the turbulence zone 34 are dispersed. Similar dispersion, albeit on average smaller gas bubbles, takes place in the ejectors 7 of the first flotation stage. There Aeroflocken form from these gas bubbles and rather smaller particles.
  • Aerofoils float upwards and collect as a foam product in the foam collecting container 16, from which they are discharged via the outlet connection 17. Heavier particles to which no gas bubble has attached themselves in the ejectors 7, on the other hand, sink downwards - indicated by the arrow 36 - and reach the turbulence zone 34 of the agitator 3. Aeroflakes, in this case however, form again through corresponding collision events between particles and glass bubbles those from larger particles and larger gas bubbles, which rise to the top (indicated by the arrow 37) and also enter the foam collecting container 16 as a foam product.
  • a return line 32 which branches off from an outlet 42 serving to discharge residual pulp from the flotation chamber 2 and opens into at least one feed line 6.
  • a portion of the residual clouding stream can be passed into an ejector 7, if the supply of slurry for reasons of process control must be throttled.
  • the flotation chamber 2 of in 3 and 4 flotation apparatus 1 shown has an inner chamber 38. This is bounded by a cylindrical side wall 39 and is open at the top and bottom.
  • the inner chamber 38 may also be delimited by a differently shaped, for example, a downwardly conically tapered, also open bottom side wall 39.
  • the lower opening is dimensioned so that the hollow shaft 10 can pass through without contact. It is centrally located, leaving an annular space 40 at a radial distance from the side wall 8 in the flotation chamber 2.
  • the inner chamber 38 is provided with a foam collecting device 5a which is formed as a foam collecting container 43 surrounding the upper end of the radial clearance side wall 39.
  • the foam collecting container 43 is provided with a discharge nozzle 17 '.
  • the inner chamber 38 projects with a projection 44 from the flotation chamber 2 or from the foam collecting container 16 embracing it.
  • the inner chamber 38 causes at least a portion of the ascending of the turbulence zone 34 of the agitator 3 Aeroflocken (see arrow 41) to the outlet pipe 17 'must travel shorter ways, so that their residence time within the flotation chamber 2 and the foam collecting container 43 shortened and thereby the likelihood of their decay is reduced. Without the inner chamber 38, the aeroflakes would be detected by the circular flow of turbulence flowing in via the feed lines 6 tangentially into the flotation chamber, with the result that they would have to travel much longer distances.
  • FIGS. 5 and 6 shown variant of a flotation apparatus 1 is also an inner chamber 38 is present.
  • the feed lines 6 do not open into the annular space 40, but into the inner chamber 38, wherein they pass through the annular space 40.
  • This embodiment is primarily aimed at reducing the residence time of the aeroflakes formed in the ejectors 7 of the first flotation stage in the flotation apparatus 1, for example for 1 to 2 minutes.
  • the larger particles of the pulp are directed through the inner chamber 38 in a targeted manner to the agitator 3, ie to the second flotation stage (indicated by the arrows 45).
  • the residence time of the aeroflakes formed in the turbulence zone 34 or in the second flotation stage is in the range of 5 to 10 times the residence time of the aeroflakes formed in the first flotation stage.
  • the targeted supply of the coarser particles from the first flotation stage to the second flotation stage can optionally take place by means of a diaphragm 46 with adjustable diaphragm opening 47 arranged at the lower end of the inner chamber 38.
  • the diaphragm is formed by a conical wall 48, which forms an angle 49 of, for example, 135 ° with the side wall 39 of the inner chamber 38.
  • the adjustability of the diaphragm opening can be accomplished, for example, by individual movable wall elements which overlap in the circumferential direction of the inner chamber 38.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Paper (AREA)
  • Physical Water Treatments (AREA)

Claims (15)

  1. Appareil de flottation, avec une chambre de flottation (2) présentant une paroi latérale (8) et un fond (9), servant à accueillir une boue, un dispositif de collecte de mousse (5, 5a) agencé au niveau d'un secteur supérieur de la chambre de flottation pour un produit sous forme de mousse formé lors de la flottation, et une conduite d'approvisionnement (6) destiné à un approvisionnement continu en boue de la chambre de flottation, caractérisé en ce qu'une flottation en deux étapes peut être mise en oeuvre dans la chambre de flottation à l'aide de deux dispositifs de mélange opérant indépendamment l'un de l'autre, dans lequel la première étape de flottation comprend un premier dispositif de mélange et la deuxième étape de flottation comprend un deuxième dispositif de mélange (M2), le premier dispositif de mélange (M1) étant présent pour une dispersion d'un gaz dans la boue dans la conduite d'approvisionnement (6), laquelle débouche dans la chambre de flottation au niveau d'un emplacement (19) se trouvant au-dessus d'un agitateur et le deuxième dispositif de mélange (M2) est présent à l'intérieur de la chambre de flottation (2), comprenant l'agitateur (3) et un dispositif de gazage associé à l'agitateur (3).
  2. Appareil de flottation selon la revendication 1, dans lequel sont présentes plusieurs conduites d'approvisionnement (6) équipées d'un premier dispositif de mélange (M1), qui sont agencées au niveau de la chambre de flottation avec un espacement mutuel dans la direction périphérique.
  3. Appareil de flottation selon la revendication 1 ou 2, dans lequel la paroi latérale (8) de la chambre de flottation (2) présente une forme transversale circulaire.
  4. Appareil de flottation selon la revendication 3, dans lequel une section d'extrémité, liée à la chambre de flottation (2), de la conduite d'approvisionnement (6) est orientée de manière tangentielle par rapport à la paroi latérale (8).
  5. Appareil de flottation selon l'une quelconque des revendications précédentes, dans lequel une chambre intérieure (38) avec une paroi latérale cylindrique (39), laquelle chambre étant ouverte en haut et en bas et agencée en laissant libre un espace annulaire (40) avec un espacement radial par rapport à la paroi latérale (39) de la chambre de flottation (2), est agencée au centre de la chambre de flottation.
  6. Appareil de flottation selon la revendication 5, dans lequel est présent un dispositif de collecte de mousse (5a) agencé au niveau d'un secteur supérieur de la chambre intérieure (38).
  7. Appareil de flottation selon la revendication 5 ou 6, dans lequel la conduite d'approvisionnement (6) débouche dans l'espace annulaire (40).
  8. Appareil de flottation selon la revendication 5 ou 6, dans lequel la conduite d'approvisionnement (6) débouche dans la chambre intérieure (38).
  9. Appareil de flottation selon l'une quelconque des revendications 5 à 8, dans lequel la chambre intérieure (38) peut être réglée en hauteur.
  10. Appareil de flottation selon l'une quelconque des revendications 5 à 9, dans lequel un diaphragme (46) avec une ouverture de diaphragme réglable (47) est présent au niveau de l'extrémité inférieure de la chambre intérieure (38).
  11. Appareil de flottation selon l'une quelconque des revendications précédentes, dans lequel l'agitateur (3) est entouré latéralement par un déflecteur (51) sous la forme d'une trémie s'ouvrant vers le haut, qui recouvre un secteur de coin (50), formé par l'extrémité inférieure de la paroi latérale (8) et par le fond (9), de la chambre de flottation (38).
  12. Appareil de flottation selon l'une quelconque des revendications précédentes, dans lequel le dispositif de collecte de mousse (5, 5a) est un récipient de collecte (16, 43) entourant la chambre de flottation (2) avec un espacement radial.
  13. Appareil de flottation selon la revendication 5 ou selon une revendication dépendante de la revendication 5, dans lequel le dispositif de collecte de mousse (5, 5a) est un récipient de collecte (16, 43) entourant la chambre intérieure (38) avec un espacement radial.
  14. Appareil de flottation selon l'une quelconque des revendications précédentes, dans lequel le premier dispositif de mélange (M1) est un éjecteur (7).
  15. Procédé de flottation, dans lequel est utilisé un appareil de flottation (1) présentant une configuration selon l'une quelconque des revendications 1 à 14, qui est mis en oeuvre en deux étapes de flottation à l'intérieur d'une chambre de flottation (2), contenant une boue, de l'appareil de flottation (1), dans lequel la dispersion d'un gaz dans la boue a lieu dans la première étape de flottation à l'aide d'un premier dispositif de mélange (M1) agencé à l'intérieur d'une conduite d'approvisionnement (6) servant à acheminer de la boue dans la chambre de flottation (2) et dans lequel la deuxième étape de flottation a lieu à l'aide d'un deuxième dispositif de mélange (M2) comprenant un agitateur (3) et un dispositif de gazage (4) associé à celui-ci.
EP10189809.6A 2010-11-03 2010-11-03 Appareil de flottation et procédé de flottation Active EP2450106B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP10189809.6A EP2450106B1 (fr) 2010-11-03 2010-11-03 Appareil de flottation et procédé de flottation
US13/883,378 US9475066B2 (en) 2010-11-03 2011-10-28 Flotation apparatus and flotation method
BR112013010901A BR112013010901B1 (pt) 2010-11-03 2011-10-28 aparelho de flotação e método de flotação
CN201180052681.0A CN103313796B (zh) 2010-11-03 2011-10-28 浮选机和浮选方法
RU2013125233/03A RU2013125233A (ru) 2010-11-03 2011-10-28 Флотационный аппарат и способ флотации
AU2011325285A AU2011325285A1 (en) 2010-11-03 2011-10-28 Flotation apparatus and flotation process
PCT/EP2011/068937 WO2012059415A1 (fr) 2010-11-03 2011-10-28 Appareil de flottation et procédé de flottation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10189809.6A EP2450106B1 (fr) 2010-11-03 2010-11-03 Appareil de flottation et procédé de flottation

Publications (2)

Publication Number Publication Date
EP2450106A1 EP2450106A1 (fr) 2012-05-09
EP2450106B1 true EP2450106B1 (fr) 2016-06-01

Family

ID=43799454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10189809.6A Active EP2450106B1 (fr) 2010-11-03 2010-11-03 Appareil de flottation et procédé de flottation

Country Status (7)

Country Link
US (1) US9475066B2 (fr)
EP (1) EP2450106B1 (fr)
CN (1) CN103313796B (fr)
AU (1) AU2011325285A1 (fr)
BR (1) BR112013010901B1 (fr)
RU (1) RU2013125233A (fr)
WO (1) WO2012059415A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2450106B1 (fr) 2010-11-03 2016-06-01 Primetals Technologies Germany GmbH Appareil de flottation et procédé de flottation
FI20135868L (fi) 2013-08-28 2015-03-01 Outotec Finland Oy Menetelmä ja laite syöttövirtauksen käsittelemiseksi flotaatiolaitteeseen
CN104857884B (zh) * 2015-05-26 2017-03-22 江西稀有稀土金属钨业集团有限公司 一种搅拌式泡沫矿浆输送装置
US10977540B2 (en) 2016-07-27 2021-04-13 Composecure, Llc RFID device
CN107705283B (zh) * 2017-06-14 2020-11-17 华北理工大学 基于Otsu图像分割的颗粒与气泡碰撞检测方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189779A (en) * 1936-02-12 1940-02-13 Mining Process & Patent Co Emulsifying means and method
DE1017553B (de) 1955-09-19 1957-10-17 Metallgesellschaft Ag Verfahren und Vorrichtung zur Flotation von Mineralien
US3371779A (en) * 1965-06-24 1968-03-05 Borden Co Concentration of minerals
DE1279573B (de) 1967-05-31 1968-10-10 Galigher Company Flotationszelle
US4094783A (en) * 1977-09-29 1978-06-13 Jackson George F Centrifugal flotation separator
DE3312070A1 (de) * 1983-04-02 1984-10-04 Klöckner-Humboldt-Deutz AG, 5000 Köln Flotationszelle
DE3338171C3 (de) * 1983-10-20 1994-04-14 Ystral Gmbh Maschinenbau Und P Verfahren zum Trennen der Bestandteile von Emulsionen und Vorrichtung zur Durchführung des Verfahrens
FI68533C (fi) * 1983-12-29 1985-10-10 Outokumpu Oy Repeterande flotationsmaskin
SU1717238A1 (ru) 1988-03-09 1992-03-07 Уральский филиал Всесоюзного научно-исследовательского и проектного института галургии Кондиционер суспензии
TW201295B (fr) * 1991-06-14 1993-03-01 Sonnenrein Uwe
US5470465A (en) * 1994-01-28 1995-11-28 Automatic Control Technology Inc. Vortex system for separating particles from a liquid stream
CN2227985Y (zh) 1995-01-25 1996-05-29 中国矿业大学 自吸式微泡发生器
CA2178189A1 (fr) * 1995-06-06 1996-12-07 Nardus Terblanche Colonne de flottation a alimentation continue
CN2224031Y (zh) 1995-07-07 1996-04-10 姜志伟 搅拌与分离隔开的气泡浮选机
US6056125A (en) * 1997-07-08 2000-05-02 U. S. Department Of Energy Cross flow cyclonic flotation column for coal and minerals beneficiation
RU2121884C1 (ru) 1997-11-04 1998-11-20 Открытое Акционерное Общество "Уралэнергоцветмет" Флотационная пневматическая колонная машина
FI116042B (fi) * 2001-10-04 2005-09-15 Outokumpu Oy Vaahdotusmekanismi ja -kenno
FI20012538A (fi) * 2001-12-21 2003-06-22 Outokumpu Oy Menetelmä ja laitteisto vaahdotuksen tehostamiseksi
US7267232B2 (en) * 2004-04-30 2007-09-11 The Board Of Trustees Of The University Of Illinois Flotation device and method of froth flotation
ITVI20070133A1 (it) 2007-05-09 2008-11-10 Comer Spa Cella di flottazione perfezionata per la depurazione di sospensioni fibrose
CN201088935Y (zh) 2007-09-21 2008-07-23 喻炳高 精选浮选机
EP2308601A1 (fr) 2009-09-29 2011-04-13 Siemens Aktiengesellschaft Buse de dispersion, machine de flottation en étant équipée et son procédé de fonctionnement
EP2450106B1 (fr) 2010-11-03 2016-06-01 Primetals Technologies Germany GmbH Appareil de flottation et procédé de flottation

Also Published As

Publication number Publication date
CN103313796A (zh) 2013-09-18
RU2013125233A (ru) 2014-12-10
BR112013010901A8 (pt) 2018-04-03
AU2011325285A1 (en) 2013-05-02
BR112013010901B1 (pt) 2020-04-07
CN103313796B (zh) 2015-12-16
EP2450106A1 (fr) 2012-05-09
BR112013010901A2 (pt) 2016-09-13
US20130220894A1 (en) 2013-08-29
WO2012059415A1 (fr) 2012-05-10
US9475066B2 (en) 2016-10-25

Similar Documents

Publication Publication Date Title
EP2393601B1 (fr) Ensemble hydrocyclone, procede de fonctionnement associe, ainsi que buse de sortie inferieure associee
EP2450106B1 (fr) Appareil de flottation et procédé de flottation
EP2500102B1 (fr) Dispositif de flottation avec un élément de distribution d'un fluide pouvant générer un courant du fluide vers le collecteur en mousse
EP2804696B1 (fr) Procédé et broyeur vertical pour le broyage de matière
EP1080786B1 (fr) Procédé, dispositif et système pour broyeur à jet à lit fluidisé
EP2516733A1 (fr) Procédé et dispositif de tamisage pour le tamisage d'une suspension de matière fibreuse
EP2572778B1 (fr) Machine de flottaison avec une buse de dispersion et procédé de fonctionnementen
DE3106889A1 (de) "vorrichtung zum auftrennen einer mischung aus einer cellulosebreisuspension und groben schweren teilchen"
DE4326605A1 (de) Verfahren und Vorrichtung zur Trennung eines feinkörnigen Feststoffes in zwei Kornfraktionen
DE1507697A1 (de) Verfahren und Vorrichtung zu rotierender Verarbeitung und Sortierung
EP2463058B1 (fr) Buse à jet pour un dispositif de sablage ou de rayonnement d'objets
EP0904156B1 (fr) Dispositif pour separer les fractions plus lourdes des fractions plus legeres d'eaux boueuses par effet de force centrifuge
DE60012329T2 (de) Verbesserte einspritzung von mit feststoffpartikeln beladenem wasser in einen zentrifugalabscheider
EP1618960B1 (fr) Dispositif et procédé de séparation des particules solides plongeantes et flottantes à densités différentes
DE3001448C2 (de) Drucksortierer
WO1997016253A2 (fr) Separateur des matieres legeres du sable et du gravier
DE2708135A1 (de) Vorrichtung zur aufbereitung von truebe
DE3910349A1 (de) Papiermaterial-aufbereitungsvorrichtung
EP0430985A1 (fr) Dispositif de traitement de milieux liquides ou peu visqueux.
DE102008035188A1 (de) Strahlmühle mit einem Fluidstrahl zum Zerkleinern und/oder Trennen eines Mahlgutes
DE19718668C2 (de) Verfahren zum Trennen und kontinuierlichen Austragen von schwer dispergierbaren Bestandteilen
DE4446888C2 (de) Vorrichtung zur naßmechanischen Behandlung kontaminierter, körniger Materialien und deren Aufschlämmungen
DE29709918U1 (de) Vorrichtung zum Ausscheiden von Fein- und Leichtgut aus trockenem, rieselfähigem Schüttgut
DE102017128560B3 (de) Vorrichtung zum Abscheiden von Sinkstoffen aus Flüssigkeiten, Reinigungseinrichtung und Verfahren zum Abscheiden von Sinkstoffen
DE4118525C1 (en) Appts. for cleansing contaminated surfaces using liq. - includes cylindrical housing with high pressure injection nozzle for feed liq., overflow, concentrically arranged sepg. walls and sieve

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20120709

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

17Q First examination report despatched

Effective date: 20140423

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PRIMETALS TECHNOLOGIES GERMANY GMBH

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: B03D 1/14 20060101ALI20160104BHEP

Ipc: B03D 1/24 20060101ALI20160104BHEP

Ipc: B03D 1/20 20060101AFI20160104BHEP

Ipc: B03D 1/22 20060101ALI20160104BHEP

Ipc: B03D 1/02 20060101ALI20160104BHEP

INTG Intention to grant announced

Effective date: 20160129

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 803534

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160615

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010011769

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160902

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161003

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010011769

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20161103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161103

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161103

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 803534

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161103

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20101103

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160601

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502010011769

Country of ref document: DE

Owner name: PRIMETALS TECHNOLOGIES GERMANY GMBH, DE

Free format text: FORMER OWNER: PRIMETALS TECHNOLOGIES GERMANY GMBH, 91052 ERLANGEN, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20231121

Year of fee payment: 14

Ref country code: DE

Payment date: 20231121

Year of fee payment: 14