DE3808154A1 - Injector having bubble divider - Google Patents

Injector having bubble divider

Info

Publication number
DE3808154A1
DE3808154A1 DE3808154A DE3808154A DE3808154A1 DE 3808154 A1 DE3808154 A1 DE 3808154A1 DE 3808154 A DE3808154 A DE 3808154A DE 3808154 A DE3808154 A DE 3808154A DE 3808154 A1 DE3808154 A1 DE 3808154A1
Authority
DE
Germany
Prior art keywords
end plate
cover plate
elements
injector according
radial
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Withdrawn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
DE3808154A
Other languages
German (de)
Inventor
Lothar Pfalzer
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.)
JM Voith GmbH
Original Assignee
JM Voith 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
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Priority to DE3808154A priority Critical patent/DE3808154A1/en
Publication of DE3808154A1 publication Critical patent/DE3808154A1/en
Withdrawn legal-status Critical Current

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
    • B03D1/16—Flotation machines with impellers; Subaeration machines
    • B03D1/20—Flotation machines with impellers; Subaeration machines with internal air pumps
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23312—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a conduit surrounding the stirrer axis
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • 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
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2334—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer
    • B01F23/23342—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements provided with stationary guiding means surrounding at least partially the stirrer the stirrer being of the centrifugal type, e.g. with a surrounding stator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • 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
    • B03D1/24—Pneumatic
    • B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/70—Pulp catching, de-watering, or recovering; Re-use of pulp-water by flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2711—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with intermeshing elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2712—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with ribs, ridges or grooves on one surface

Landscapes

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

Abstract

The injector has, in its diffuser part having an upper cover plate and lower end plate, impact elements in the form of pins, webs or ribs or shearing elements in the form of perforated cylinders, the impact elements preferably also being arranged, with a narrow gap between each other, so as additionally to exercise a shearing effect. By this means, the division and dispersion of the gas bubbles in the suspension to be floated is further improved.

Description

Die Erfindung betrifft einen Injektor entsprechend dem Oberbe­ griff des Patentanspruchs 1. Ein solcher Injektor ist bekannt aus der DE-OS 31 44 387.The invention relates to an injector according to the Oberbe handle of claim 1. Such an injector is known from DE-OS 31 44 387.

Es besteht die Aufgabe der Erfindung, die Dispergierwirkung des Injektors hinsichtlich der Verteilung der Gasblasen weiter zu verbessern.It is the object of the invention, the dispersing effect of Injector with respect to the distribution of the gas bubbles improve.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kenn­ zeichnenden Teils des Patentanspruchs 1 gelöst.This object is achieved by the features of the kenn Drawing part of claim 1 solved.

Nachfolgend wird die Erfindung anhand der in den Figuren darge­ stellten Ausführungsbeispiele erläutert. Dabei stellt die Fig. 1 schematisch einen Axialschnitt durch den Injektor, und die übri­ gen Figuren entsprechende Vergrößerungen im Bereich des Radial­ diffusors dar, wobei noch Ansichten in radialer Richtung dazu vorgesehen sind, und Fig. 3b eine Draufsicht auf die untere Ab­ schlußscheibe des Injektors darstellt. The invention is explained below with reference to the exemplary embodiments presented in the figures. In this case, the Fig. 1 schematically shows an axial section through the injector, and the übri gen Figures, corresponding magnifications in the region of the radial diffuser is, while still views are provided in the radial direction thereof, and Fig. 3b shows a top view of the lower from the final slice of the injector represents.

Der Injektor gemäß Fig. 1 besteht aus einem Zufuhrrohr 1 und einem Mischrohr 2, an das sich ein Radialdiffusor 3 anschließt. Vor der Mischstrecke bzw. dem Mischrohr 2 befindet sich eine Blende 7 mit gleichmäßig verteilten Blendenöffnungen 7′. In Strömungsrichtung hinter der Blende 7 befinden sich Luftansaug­ öffnungen 13 am radialen Rand der Mischstrecke bzw. im Mischrohr 2. Der Flüssigkeitsstand der zu flotierenden Suspension ist ge­ kennzeichnet. Der Diffusor besteht aus einer oberen Abdeckplatte 4 und einer unteren Abschlußplatte 5, die im Mischrohr 2 bzw. Zufuhrrohr 1 über Lager 25, 26 an einer Welle 6 gehalten ist, die von einem Motor 8 angetrieben wird. Zur Festlegung der Ab­ schlußplatte 5 an der Welle 6 dient eine Schraubverbindung 27. Deckplatte 4 und Abschlußplatte 5 müssen natürlich nicht, wie dargestellt, die Relationen von oben und unten aufweisen. Auch eine geneigte, oder mehr vertikale Anordnung der Platten ist möglich.The injector according to Fig. 1 consists of a feed pipe 1 and a mixing tube 2, which is followed by a radial diffuser 3 is connected. Before the mixing section or the mixing tube 2 there is an aperture 7 with evenly distributed apertures 7 '. In the flow direction behind the orifice 7 there are air intake openings 13 at the radial edge of the mixing section or in the mixing tube 2 . The liquid level of the suspension to be floated is marked. The diffuser consists of an upper cover plate 4 and a lower end plate 5 , which is held in the mixing tube 2 or feed tube 1 via bearings 25 , 26 on a shaft 6 which is driven by a motor 8 . From the end plate 5 on the shaft 6 is a screw 27th Cover plate 4 and end plate 5 need not, of course, as shown, have the relations from above and below. An inclined or more vertical arrangement of the plates is also possible.

Die folgenden Figuren stellen nun Ausschnittsvergrößerungen ent­ sprechend dem in Fig. 1 angegebenen Ausschnitt A dar und zeigen die Elemente, die zur Pralleinwirkung oder Schereinwirkung auf die Gasblasen dienen. Dabei handelt es sich gemäß Fig. 2 und 2a um radiale Stege oder Rippen 14. Gemäß Fig. 2b sind die sich radial erstreckenden Kanten dieser Rippen 9, 10 gestuft ausge­ bildet und mit engem Spalt, d.h. mit geringem gegenseitigen Ab­ stand zueinander angeordnet. Ähnliches gilt im Falle der Fig. 2c, wo die zusammenwirkenden Kanten der Rippen 11, 12 mit einer Neigung mit einem kleinen spitzen Winkel gegenüber der Deckplat­ te bzw. der Abschlußplatte ausgebildet sind. Gemäß Fig. 3 und 3a weisen die Rippen 18 von Deckplatte und Abschlußplatte einen engen axialen Spalt zwischen sich auf. Dabei können diese Rippen entsprechend Fig. 3b radial (20), mit einem spitzen Winkel ge­ gen die Radiale geneigt (21) angeordnet sein oder nach Art eines Pumpenlaufrades leicht gekrümmt (22) ausgebildet sein. The following figures now represent enlarged sections corresponding to the section A indicated in FIG. 1 and show the elements which are used for impact action or shear action on the gas bubbles. It 2 and 2a is shown in Fig. By radial webs or ribs 14. According to Fig. 2b, the radially extending edges of these ribs 9, 10 are staggered forms and be disposed with a narrow gap, that is standing with a slight mutual from each other. The same applies in the case of Fig. 2c, where the cooperating edges of the ribs 11 , 12 are formed with an inclination with a small acute angle with respect to the cover plate or the end plate. According to Fig. 3 and 3a 18 the ribs of the cover plate and end plate a narrow axial gap therebetween. In this case, these ribs can according to Fig. 3b radially (20) at an acute angle ge gene Radial the inclined (21) can be arranged or in the manner of a pump impeller slightly curved (22) may be formed.

Entsprechend Fig. 4 sind als Scherelemente Siebzylinder 23 bzw. 24 vorgesehen, die konzentrisch zueinander und mit geringem Ab­ stand zueinander angeordnet sind.According to Fig. 4 are provided as the shearing elements 23 and screen cylinder 24, which are arranged concentrically to each other and standing with little from each other.

Gemäß Fig. 5 befindet sich ein Siebzylinder 23′ an der Deck­ platte 4, denen Rippen 18′ entsprechend Fig. 3b mit engem ge­ genseitigen Spalt zugeordnet sind.According to Figure 5 there is. A screen cylinder 23 'on the cover plate 4, where ribs 18' according to Fig. 3b are associated with close mutual ge gap.

Hier ist noch zu erwähnen, daß auch andere Injektorbauarten hin­ sichtlich der Luftzuführung in Frage kommen, z.B. gemäß US-PS 42 20 612, DE-OS 34 12 431 oder US-PS 41 10 210.It should also be mentioned here that other injector types also work the air supply, e.g. according to US-PS 42 20 612, DE-OS 34 12 431 or US-PS 41 10 210.

Die Drehzahlen der hinteren Abschlußplatte 5 können zwischen 100 und 1000 U/min. betragen. Die Spalte zwischen Rotor- und Stator­ elementen sind vorzugsweise bei etwa 1 bis 2 mm zu bemessen. Die Lochungen der Siebzylinder gemäß Fig. 4 und 5 betragen etwa 2 bis 12, vorzugsweise 5 bis 10 mm, im Durchmesser.The speeds of the rear end plate 5 can be between 100 and 1000 rpm. be. The gaps between the rotor and stator elements are preferably dimensioned at about 1 to 2 mm. The perforations of the screen cylinder shown in FIG. 4 and 5 are about 2 to 12, preferably 5 mm to 10 in diameter.

Claims (12)

1. Injektor für Flotationseinrichtungen, bei dem sich hinter einer Luftansaugstelle bzw. Luftzufuhrstelle eine Misch­ strecke anschließt, an deren Ende ein Radialdiffusor mit im wesentlichen axialem Eintritt und radialem Austritt angeord­ net ist, der eine der Mischstrecke nahe (obere) Deckplatte und eine von der Mischstrecke entferntere (untere) Abschluß­ platte aufweist, gekennzeichnet durch eine Prall- oder Schereinwirkung auf die in der zu flotierenden Suspension dispergierten Gasblasen ausübende Elemente (9-24), die teilweise an der Deckplatte (4) und teilweise an der Ab­ schlußplatte (5) angeordnet sind, wobei die Abschlußplatte (5) rotierbar angeordnet ist.1.Injector for flotation devices, in which a mixing section is connected behind an air intake or air supply point, at the end of which a radial diffuser with essentially axial entry and radial exit is arranged, which is one of the mixing section near (upper) cover plate and one of the Mixing distance distant (lower) end plate, characterized by impact or shear on the gas bubbles dispersed in the suspension to be floated elements ( 9-24 ), partly on the cover plate ( 4 ) and partly on the end plate ( 5 ) are arranged, the end plate ( 5 ) being arranged rotatably. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Elemente zwecks Erzeugung eines Schereffekts mit einem engen Spalt zwischen einander zusammenwirken.2. Device according to claim 1, characterized in that the Elements to create a tight shear effect Gap cooperate between each other. 3. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Elemente Rippen sind, die radial (20), um einen spitzen Winkel gegen die Radiale geneigt (21) oder ent­ sprechend einem Pumpenlaufrad (22) gekrümmt angeordnet bzw. ausgebildet sind.3. Device according to claim 1 or 2, characterized in that the elements are ribs which are arranged radially ( 20 ) to an acute angle to the radial inclined ( 21 ) or accordingly a pump impeller ( 22 ) curved or formed. 4. Injektor nach einem der Ansprüche 1 bis 3, dadurch gekenn­ zeichnet, daß die Elemente (9, 10; 11, 12) von der Deckplat­ te (4) und Abschlußplatte (5) in der Position ihres gering­ sten gegenseitigen Abstandes zwischen einander radiale Spal­ te bilden. 4. Injector according to one of claims 1 to 3, characterized in that the elements ( 9 , 10 ; 11 , 12 ) from the Deckplat te ( 4 ) and end plate ( 5 ) in the position of their least mutual distance between each other radial Form a column. 5. Injektor nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Rippen (9 bis 12; 20 bis 21) mindestens zu 80% die ra­ diale Erstreckung der oberen Deckplatte (4) einnehmen.5. Injector according to claim 3 or 4, characterized in that the ribs ( 9 to 12 ; 20 to 21 ) occupy at least 80% of the ra diale extension of the upper cover plate ( 4 ). 6. Injektor nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Elemente von Deckplatte (4) und Abschlußplatte (5) Stif­ te sind.6. Injector according to claim 1 or 2, characterized in that the elements of the cover plate ( 4 ) and end plate ( 5 ) are Te te. 7. Injektor nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Elemente von Deckplatte (4) und Abschlußplatte (5) Ringe oder Zylinder (23, 24) mit Sieblochungen sind, die zueinan­ der konzentrisch angeordnet sind.7. Injector according to claim 1 or 2, characterized in that the elements of the cover plate ( 4 ) and end plate ( 5 ) are rings or cylinders ( 23 , 24 ) with perforations which are arranged concentrically to one another. 8. Injektor nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Elemente von Deckplatte (4) und Abschlußplatte (5) Sek­ toren von Ringen oder Zylindern mit Siebperforation sind.8. Injector according to claim 1 or 2, characterized in that the elements of the cover plate ( 4 ) and end plate ( 5 ) sec gates of rings or cylinders with perforated screen. 9. Injektor nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß die Ringe oder Zylinder (23, 24) oder entsprechenden Sekto­ ren mit geringem radialem Abstand zueinander angeordnet sind, so daß sie zwischen sich enge Spalte bilden.9. Injector according to claim 7 or 8, characterized in that the rings or cylinders ( 23 , 24 ) or corresponding Sekto ren are arranged with a small radial distance from one another, so that they form narrow gaps between them. 10. Injektor nach einem der Ansprüche 8 oder 9, dadurch gekenn­ zeichnet, daß die Ringe oder Zylinder (23, 24) oder ent­ sprechenden Sektoren jeweils radial außen an der Deckplatte (4) bzw. Abschlußplatte (5) angeordnet sind.10. Injector according to one of claims 8 or 9, characterized in that the rings or cylinders ( 23 , 24 ) or corresponding sectors are each arranged radially on the outside on the cover plate ( 4 ) or end plate ( 5 ). 11. Injektor nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Deckplatte (4) radial außen einen Siebzylinder (23′) oder Sektoren davon und die Abschlußplatte (5) radial weiter innen Rippen (18′) trägt, die gegenüber dem Siebzylinder (23′) mit engem Spalt angeordnet sind.11. Injector according to claim 1 or 2, characterized in that the cover plate ( 4 ) radially outside a screen cylinder ( 23 ') or sectors thereof and the end plate ( 5 ) radially further inside ribs ( 18 ') which with respect to the screen cylinder ( 23 ') are arranged with a narrow gap. 12. Injektor nach einem der Ansprüche 1 bis 11, dadurch gekenn­ zeichnet, daß als Luftzufuhreinrichtung eine Blende (7) mit strömungsmäßig hinter dieser, am radialen Rand der Misch­ strecke (2) angeordneten Luftansaugöffnungen (13) vorgesehen ist.12. Injector according to one of claims 1 to 11, characterized in that a diaphragm ( 7 ) with the flow behind this, at the radial edge of the mixing section ( 2 ) arranged air intake openings ( 13 ) is provided as the air supply device.
DE3808154A 1988-03-11 1988-03-11 Injector having bubble divider Withdrawn DE3808154A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3808154A DE3808154A1 (en) 1988-03-11 1988-03-11 Injector having bubble divider

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3808154A DE3808154A1 (en) 1988-03-11 1988-03-11 Injector having bubble divider

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536015A1 (en) * 1991-10-03 1993-04-07 Ceca S.A. Cyclone-turbines for installation in flotation devices for treatment of waste water contaminated with hydrocarbons
FR2682048A1 (en) * 1991-10-03 1993-04-09 Ceca Sa FLOATER FOR THE TREATMENT OF WATER POLLUTED BY HYDROCARBONS.
EP1060786A1 (en) * 1999-06-15 2000-12-20 Pfaudler Werke GmbH Charging assembly for mixing vessel
EP1091041A1 (en) * 1999-10-07 2001-04-11 Voith Paper Patent GmbH Flotation apparatus for removing contaminants, especially printing inks, from a fibrous suspension
EP1124000A2 (en) 2000-02-03 2001-08-16 Andritz AG Method and device for aerating dispersions
DE102009010698A1 (en) * 2009-02-27 2010-09-02 Voith Patent Gmbh Flotation device for the removal of impurities by using gas bubbles, comprises flotation container, where mixing device is provided for supplying flow of gas
US8029751B2 (en) 2004-12-22 2011-10-04 Placer Dome Technical Services Limited Reduction of lime consumption when treating refractory gold ores or concentrates
US8061888B2 (en) 2006-03-17 2011-11-22 Barrick Gold Corporation Autoclave with underflow dividers
US8252254B2 (en) 2006-06-15 2012-08-28 Barrick Gold Corporation Process for reduced alkali consumption in the recovery of silver
AU2008240254B2 (en) * 2007-04-12 2012-11-08 Eriez Manufacturing Co. Flotation separation device and method
JPWO2013027650A1 (en) * 2011-08-19 2015-03-19 株式会社明治 Atomizer
US10898904B2 (en) * 2007-04-12 2021-01-26 Eriez Manufacturing Co. Flotation separation device

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0536015A1 (en) * 1991-10-03 1993-04-07 Ceca S.A. Cyclone-turbines for installation in flotation devices for treatment of waste water contaminated with hydrocarbons
FR2682048A1 (en) * 1991-10-03 1993-04-09 Ceca Sa FLOATER FOR THE TREATMENT OF WATER POLLUTED BY HYDROCARBONS.
EP0537037A1 (en) * 1991-10-03 1993-04-14 Ceca S.A. Flotation device for treatment of waste water contaminated with hydrocarbons
FR2682304A1 (en) * 1991-10-03 1993-04-16 Ceca Sa Turbine cyclones, especially for flotation equipment, intended for the treatment of water contaminated with hydrocarbons
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