EP2497575A1 - Dispositif de flottation comprenant un diffuseur de gaz en matériau mousse - Google Patents

Dispositif de flottation comprenant un diffuseur de gaz en matériau mousse Download PDF

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Publication number
EP2497575A1
EP2497575A1 EP11157786A EP11157786A EP2497575A1 EP 2497575 A1 EP2497575 A1 EP 2497575A1 EP 11157786 A EP11157786 A EP 11157786A EP 11157786 A EP11157786 A EP 11157786A EP 2497575 A1 EP2497575 A1 EP 2497575A1
Authority
EP
European Patent Office
Prior art keywords
flotation
suspension
gas
flotation device
gas distributor
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.)
Withdrawn
Application number
EP11157786A
Other languages
German (de)
English (en)
Inventor
Lilla Grossmann
Wolfgang Krieglstein
Sven Menger
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
Original Assignee
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
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP11157786A priority Critical patent/EP2497575A1/fr
Priority to CL2012000294U priority patent/CL2012000294U1/es
Priority to PE2012000260U priority patent/PE20120891Z/es
Priority to RU2012107863/03U priority patent/RU120378U1/ru
Priority to AU2012100264A priority patent/AU2012100264A4/en
Priority to CN2012200897920U priority patent/CN202570415U/zh
Publication of EP2497575A1 publication Critical patent/EP2497575A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • 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
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23124—Diffusers consisting of flexible porous or perforated material, e.g. fabric
    • B01F23/231243—Diffusers consisting of flexible porous or perforated material, e.g. fabric comprising foam-like gas outlets
    • 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
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • B01F25/103—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components with additional mixing means other than vortex mixers, e.g. the vortex chamber being positioned in another mixing chamber
    • 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
    • B03D1/24—Pneumatic
    • B03D1/245—Injecting gas through perforated or porous area

Definitions

  • the invention relates to a flotation device for separating solid particles from a suspension, comprising a housing with a flotation chamber for receiving the suspension and at least one feed arrangement for supplying gas into the flotation chamber, wherein the at least one feed arrangement comprises at least one gas distributor element which comprises at least one open-pore Material is formed, wherein at least one surface region of the gas distribution element is arranged in the region of the flotation chamber, that this is wetted by the suspension.
  • the invention further relates to the use of such a flotation device.
  • 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 for feeding suspension into the flotation chamber, here referred to as ejectors, furthermore with at least feed arrangement for supplying gas into the flotation chamber, when using air aeration devices or aerators , as well as one Collecting container for a foam product formed during 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 rendered hydrophobic in the suspension.
  • 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.
  • the JP 58189054 A describes a method and apparatus for coal flotation.
  • a flotation device used which has in the region of the flotation chamber a porous bottom plate made of ceramic, through which the suspension gas is supplied.
  • the object is for the flotation device for separating solid particles from a suspension, comprising a housing with a flotation chamber for receiving the suspension and at least one feed arrangement for supplying gas into the flotation chamber, wherein the at least one feed arrangement comprises at least one gas distributor element comprising at least one open-porous material is formed, wherein at least one surface region of the gas distribution element is arranged in the region of the flotation that this is wetted by the suspension, achieved in that the open-pore material is formed by a foam material of predominantly metal or plastic.
  • the temperature range in which flotation of a water-based suspension is usually carried out is between about 4 ° C and about 60 ° C.
  • metallic materials or plastics-based materials in this temperature band are less susceptible to brittle fracture. Due to the ductility of metallic materials and a - albeit for some plastics only to a small extent - present elasticity of plastics are better suited for use in flotation than brittle materials such as ceramics.
  • an open-pore foam material additionally reduces the risk of breakage of the gas distributor element, since such materials have a high mechanical strength and only a low flow resistance with low weight.
  • the three-dimensionally networked structure of a foam material behaves as a uniform whole, through which mechanical loads are distributed evenly over a large area.
  • the open porosity of the foam material leads to a homogenization of the gas input into the suspension in terms of gas distribution, gas flow and gas bubble size, so that a particularly effective fumigation and thus a particularly effective discharge of superficially adhering to the bubbles, to be separated solids occurs.
  • ductile metal and foam material or plastic and foam material leads to a particularly stable, yet negligible in terms of size and weight gas distribution element, which is ideal for use in flotation devices to distribute gas evenly in the suspension.
  • Usable open-pore metal foams have a density which is usually about 10% of the starting material.
  • the number of pores per inch (ppi) is usually in the range of 10 to 45 ppi in such metal foams.
  • a foam material may be formed from a single metal, a metal alloy or a composite with a metallic matrix. Suitable metal alloys are based, for example, on aluminum. Suitable composites with a metallic matrix include, for example, hard material particles.
  • a plastic foam material is preferably formed from a flexible polyurethane foam. But it is also a variety of other plastics used, which give elastically deformable foams in the temperature range between 4 ° C and 60 ° C.
  • the foam material preferably has pores with a mean pore diameter in the range of 0.5 mm to 4 mm.
  • different foam materials with different average pore diameters can be used on a flotation device.
  • At least one gas distributor element of the flotation device at least partially delimits the flotation chamber on its underside.
  • the gas distributor element can form the entire bottom of the flotation chamber or only partially form the bottom of the flotation chamber.
  • a plurality of gas distributor elements in the region of the bottom of the flotation chamber are arranged at a distance from one another in order to achieve the most uniform fumigation of the suspension.
  • At least one gas distributor element is arranged in the flotation chamber, without being in direct contact with the housing.
  • gas distribution elements that are not in contact with the housing are arranged, arranged at a, gas outlet openings having supply line, wherein the foam material surrounds the region of the supply line comprising the gas outlet openings or at least the gas outlet openings covered.
  • This supply device comprising the supply line and / or the gas distributor element (s), is immersed in the region of the upper end of the housing, for example directly into the suspension. But also a mounting of the supply line to the housing or in an opening of the housing is possible.
  • At least one baffle plate for gas flowing out of the at least one gas distributor element is arranged in the vertical direction above the at least one gas distributor element. This promotes the division of the outflowing gas bubbles into smaller gas bubbles and reduces the risk of clogging of the pores of the foam material by solid particles from the suspension.
  • At least one gas distribution element is configured helically, wherein the helical gas distribution element is arranged concentrically to the vertical center axis of the flotation chamber.
  • the helix of the helical gas distributor element preferably has a pitch angle in the range of 5 ° to 20 °, in order to realize optimum gassing.
  • the helical gas distributor element can be arranged without contact with the housing or the helical gas distributor element can be fastened to the housing in the region of a side facing the housing.
  • the helical gas distributor element is supplied with gas via a supply line.
  • helical gas distribution elements which are arranged without contact with the housing equipped with a gas outlet openings having supply line, which is covered with the foam material.
  • Helical gas distribution elements, which are arranged in contact with the housing are, for example, with a equipped rail-shaped supply line, wherein the foam material, the rail is covered.
  • gas distribution elements can be used simultaneously on a flotation device.
  • at least one further gas distributor element can be arranged in the middle of the flotation chamber and / or at least one helical or otherwise shaped gas distributor element can be arranged in the region of the side walls of the vessel.
  • the foam material of a gas distribution element is in particular divided into individual segments, in order to allow a partial and in particular rapid and cost-effective replacement of only the affected segment in the case of maintenance.
  • At least one nozzle arrangement for supplying suspension or of suspension and gas is present in the flotation chamber.
  • Such nozzle arrangements are preferably arranged in the middle region of the flotation chamber, so that above the injection zone forms a kind of quiet zone on which the foam product floats and the suspension moves downwards in the flotation chamber and thus counter to the direction of movement of the gas bubbles rising in the suspension , This increases the probability of collision between solid particles and gas bubbles and thus the yield of the flotation process.
  • the flotation chamber has a circular circumference when viewed in the vertical direction and the at least one nozzle arrangement is set up for supplying suspension or suspension and gas tangentially to the circular circumference into the flotation chamber.
  • the suspension in the flotation chamber is placed in a helical flow, ie the suspension not only moves from top to bottom in the flotation chamber, but rotates at the same time around the vertical center axis of the flotation chamber.
  • the flotation device is preferably a pneumatic flotation cell or a columnar flotation cell, but in particular a hybrid flotation cell which combines both types. Details of these flotation devices have already been discussed in the introduction.
  • a flotation device for flotation of solid particles from a valuable material, in particular ore mineral, from a suspension having a solids content in the range of about 20 to 50% to form a foam product is ideal. It can realize a high yield of foam product and low downtime of the system.
  • FIG. 1 shows a first flotation device 1 for the separation of solid particles from a suspension S in longitudinal section.
  • the flotation device 1 comprises a housing 2 with a flotation chamber 2a for receiving the suspension S and a feed arrangement 3 for supplying gas G, here in the form of air, into the flotation chamber 2a.
  • the feed arrangement 3 comprises a plurality of gas distributor elements 4, which are each formed from at least one open-pored material. At least one surface area of each gas distribution element 4 is arranged in the region of the flotation chamber 2 a, that this is wetted by the suspension S.
  • the open-pore material is formed here by a foam material made of metal, that is to say an open-pored metal foam.
  • the gas distributor elements 4 are arranged in contact with the bottom of the vessel 2 and thus limit the flotation chamber 2 a partially on its underside.
  • the flotation device 1 furthermore has a nozzle arrangement 6 for feeding suspension S or optionally suspension S and gas G into the flotation chamber 2 a.
  • the flotation chamber 2a has a circular circumference when viewed in the vertical direction, with the nozzle arrangement 6 being set up to supply the suspension S, or optionally suspension S and gas G, into the flotation chamber 2a tangentially to the circular circumference.
  • the suspension S moves in the flotation chamber from top to bottom along a helical flow.
  • the solid particles collide in the suspension S with the gas bubbles formed by the gas distribution elements 4 and rising to the surface of the suspension.
  • hydrophobic solid particles to be deposited, in particular of ore mineral adhere to the gas bubbles and are carried upwards with them. It forms on the surface of the suspension S, the foam product SP, which is withdrawn via a foam collection device, not shown here, such as a foam channel, and then further processed.
  • each gas distributor element 4 In the vertical direction above each gas distributor element 4, a baffle plate 5 is arranged in each case for gas G flowing out of the gas distributor elements 4.
  • the gas bubbles rise from the respective gas distributor element 4 upwards and strike the respective baffle plate 5, whereby the gas bubbles are divided and thus increases the number of bubbles and the bubble size is reduced.
  • Residual residual pulp R to which the hydrophobic solids particles to be removed have been removed, is removed from the flotation chamber 2a via a drain 8.
  • FIG. 2 shows a second flotation device 1 'in column form for the separation of solid particles from a suspension S in longitudinal section. Same reference numerals as in FIG. 1 identify similar elements. There are two feed arrangements 3, 3 'for supplying gas G to the flotation chamber 2a.
  • a first of the two feed arrangements 3 comprises a supply line 3a, which has here not visible gas outlet openings and in the region of the gas passage openings with the foam material of the gas distribution element 4a, here of open-cell polyurethane flexible foam, is sheathed.
  • the supply line 3a is submerged from above into the suspension S, the gas distributor element 4a being located centrally in the flotation chamber 2a.
  • a supply line 3a can supply a plurality of gas distributor elements 4a with gas, or a separate supply line 3a can be provided per gas distributor element 4a.
  • the second of the two feed devices 3 comprises a gas distributor element 4b of open-pored metal foam, which completely delimits the flotation chamber 2a on its underside.
  • the second flotation device 1 ' likewise has a nozzle arrangement 6 for feeding suspension S or optionally suspension S and gas G into the flotation chamber 2 a.
  • the flotation chamber 2a has a circular circumference when viewed in the vertical direction, with the nozzle arrangement 6 being set up to supply the suspension S, or optionally suspension S and gas G into the flotation chamber 2a, tangentially to the circular circumference.
  • FIG. 3 shows a third flotation device 1 '' in column form for the separation of solid particles from a suspension S in longitudinal section. Same reference numerals as in the FIG. 1 and 2 identify similar elements. It is here, as already in FIG. 2 , two feed arrangements 3, 3 'for supplying gas G to the flotation chamber 2a.
  • a first of the two feed arrangements 3 comprises a supply line 3a, which widens in a funnel shape and is closed at its end with foam material of a gas distributor element 4a.
  • the foam material is subdivided into segments that enable segmental replacement in the event of maintenance.
  • the individual segments may be formed of different foam materials, i. differ in material and / or average pore diameter.
  • the supply line 3a is guided laterally through the housing 2 into the suspension S, wherein the gas distributor element 4a is located centrally in the flotation chamber 2a.
  • a supply line 3a can supply a plurality of gas distributor elements 4a with gas, or a separate supply line 3a can be provided per gas distributor element 4a.
  • the second of the two feed devices 3 comprises a helical gas distributor element 4c of open-pored metal foam, which runs along the housing 2 and whose helical longitudinal axis is arranged concentrically to a central axis M of the flotation chamber 2a.
  • the metal foam is arranged here on a rail-shaped supply line, via which the gas is supplied to the metal foam.
  • a plurality of horizontally or obliquely arranged, annular gas distributor elements may also be present here.
  • the third flotation device 1 likewise has a nozzle arrangement 6 for feeding suspension S or optionally suspension S and gas G into the flotation chamber 2 a.
  • the flotation chamber 2a has a circular circumference when viewed in the vertical direction, with the nozzle arrangement 6 being set up to supply the suspension S, or optionally suspension S and gas G into the flotation chamber 2a, tangentially to the circular circumference.
  • FIG. 4 schematically shows a cross section through the third flotation device 1 '' at the level of the nozzle assembly 6. It can be seen that the suspension S is injected tangentially and thus in a rotational movement about the central axis M of the flotation chamber 2a is added. In this case, alternatively and depending on the diameter of the flotation chamber 2a, two or more nozzle arrangements 6 may be provided which are arranged in an analogous manner.
  • FIGS. 1 to 4 merely show examples of a flotation device according to the invention.
  • a multiplicity of further vessel shapes, vessel heights, arrangements of gas distributor elements, combinations of different foam materials, etc. are possible, which are not shown in detail here.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Disintegrating Or Milling (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP11157786A 2011-03-11 2011-03-11 Dispositif de flottation comprenant un diffuseur de gaz en matériau mousse Withdrawn EP2497575A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP11157786A EP2497575A1 (fr) 2011-03-11 2011-03-11 Dispositif de flottation comprenant un diffuseur de gaz en matériau mousse
CL2012000294U CL2012000294U1 (es) 2011-03-11 2012-02-03 Dispositivo de flotacion para la separacion de particulas solidas de una suspension que comprende una carcasa con una camara de flotacion para alojar la suspension y al menos una disposicion de alimentacion de gas a la camara de flotacion comprendiendo al menos una disposicion de alimentacion al menos un elemento de distribucion de gas.
PE2012000260U PE20120891Z (es) 2011-03-11 2012-02-27 Dispositivo de flotacion
RU2012107863/03U RU120378U1 (ru) 2011-03-11 2012-03-01 Флотационное устройство
AU2012100264A AU2012100264A4 (en) 2011-03-11 2012-03-09 Flotation device
CN2012200897920U CN202570415U (zh) 2011-03-11 2012-03-12 浮选装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11157786A EP2497575A1 (fr) 2011-03-11 2011-03-11 Dispositif de flottation comprenant un diffuseur de gaz en matériau mousse

Publications (1)

Publication Number Publication Date
EP2497575A1 true EP2497575A1 (fr) 2012-09-12

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Application Number Title Priority Date Filing Date
EP11157786A Withdrawn EP2497575A1 (fr) 2011-03-11 2011-03-11 Dispositif de flottation comprenant un diffuseur de gaz en matériau mousse

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Country Link
EP (1) EP2497575A1 (fr)
CN (1) CN202570415U (fr)
AU (1) AU2012100264A4 (fr)
CL (1) CL2012000294U1 (fr)
PE (1) PE20120891Z (fr)
RU (1) RU120378U1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108404699A (zh) * 2017-02-09 2018-08-17 埃尔微尘科技（北京）有限公司 一种气液混合装置
CN111163856B (zh) * 2017-07-17 2022-07-19 图拉有限责任公司 将进料浆液进料到分离装置中的设备和方法

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1401535A (en) * 1919-11-05 1921-12-27 Gross Frederick Daniel Flotation apparatus and process
US1403578A (en) * 1916-09-12 1922-01-17 Ernest J Sweetland Gas diffuser
US3339730A (en) * 1962-07-14 1967-09-05 Column Flotation Co Of Canada Froth flotation method with counter-current separation
JPS58189054A (ja) 1982-04-28 1983-11-04 Babcock Hitachi Kk 石炭の浮遊選鉱法
US4744890A (en) 1979-11-15 1988-05-17 University Of Utah Flotation apparatus and method
EP0275626A2 (fr) * 1987-01-21 1988-07-27 The Deister Concentrator Co., Inc. Procédé de séparation de minerais par flottation avec formation d'écume
DE3716805A1 (de) * 1987-05-19 1988-12-15 Juergen Zink Begasungskoerper
US4997549A (en) 1989-09-19 1991-03-05 Advanced Processing Technologies, Inc. Air-sparged hydrocyclone separator
DE4314766C1 (de) * 1993-05-05 1994-09-08 Passavant Werke Druckluftbelüftungseinrichtung für Wasser und Abwasser
DE19518631C1 (de) * 1995-05-20 1996-08-29 Kali & Salz Ag Vorrichtung zur Begasung einer mit Konditionierungsmitteln versehenen Trübe zur anschließenden pneumatischen Flotation
DE19823839A1 (de) * 1998-05-29 1999-12-09 Franz Durst Verfahren und Vorrichtung zum Mischen und Dispergieren mindestens zweier Phasen
US6056125A (en) * 1997-07-08 2000-05-02 U. S. Department Of Energy Cross flow cyclonic flotation column for coal and minerals beneficiation
DE20316724U1 (de) * 2003-10-30 2004-12-16 Rehau Ag + Co. Begasungseinrichtung
WO2006069995A1 (fr) 2004-12-28 2006-07-06 Siemens Aktiengesellschaft Colonne de flottation pneumatique comportant un recipient de collecte de mousse

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1403578A (en) * 1916-09-12 1922-01-17 Ernest J Sweetland Gas diffuser
US1401535A (en) * 1919-11-05 1921-12-27 Gross Frederick Daniel Flotation apparatus and process
US3339730A (en) * 1962-07-14 1967-09-05 Column Flotation Co Of Canada Froth flotation method with counter-current separation
US4744890A (en) 1979-11-15 1988-05-17 University Of Utah Flotation apparatus and method
JPS58189054A (ja) 1982-04-28 1983-11-04 Babcock Hitachi Kk 石炭の浮遊選鉱法
EP0275626A2 (fr) * 1987-01-21 1988-07-27 The Deister Concentrator Co., Inc. Procédé de séparation de minerais par flottation avec formation d'écume
DE3716805A1 (de) * 1987-05-19 1988-12-15 Juergen Zink Begasungskoerper
US4997549A (en) 1989-09-19 1991-03-05 Advanced Processing Technologies, Inc. Air-sparged hydrocyclone separator
DE4314766C1 (de) * 1993-05-05 1994-09-08 Passavant Werke Druckluftbelüftungseinrichtung für Wasser und Abwasser
DE19518631C1 (de) * 1995-05-20 1996-08-29 Kali & Salz Ag Vorrichtung zur Begasung einer mit Konditionierungsmitteln versehenen Trübe zur anschließenden pneumatischen Flotation
US6056125A (en) * 1997-07-08 2000-05-02 U. S. Department Of Energy Cross flow cyclonic flotation column for coal and minerals beneficiation
DE19823839A1 (de) * 1998-05-29 1999-12-09 Franz Durst Verfahren und Vorrichtung zum Mischen und Dispergieren mindestens zweier Phasen
DE20316724U1 (de) * 2003-10-30 2004-12-16 Rehau Ag + Co. Begasungseinrichtung
WO2006069995A1 (fr) 2004-12-28 2006-07-06 Siemens Aktiengesellschaft Colonne de flottation pneumatique comportant un recipient de collecte de mousse

Also Published As

Publication number Publication date
CL2012000294U1 (es) 2012-08-03
RU120378U1 (ru) 2012-09-20
CN202570415U (zh) 2012-12-05
AU2012100264A4 (en) 2012-04-26
PE20120891Z (es) 2012-08-08

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