US3334868A - Process for mixing and apparatus for practicing the process - Google Patents

Process for mixing and apparatus for practicing the process Download PDF

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US3334868A
US3334868A US309662A US30966263A US3334868A US 3334868 A US3334868 A US 3334868A US 309662 A US309662 A US 309662A US 30966263 A US30966263 A US 30966263A US 3334868 A US3334868 A US 3334868A
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container
pipe
mixing
flow
inlet
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US309662A
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Lage James Richard
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2321—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by moving liquid and gas in counter current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/23—Mixing by intersecting jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/25—Mixing by jets impinging against collision plates
    • 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
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/405—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles having guiding conduits therein, e.g. for feeding the gas to the bottom of the receptacle
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/02—Means for regulation, monitoring, measurement or control, e.g. flow regulation of foam

Definitions

  • This invention relates to a process for mixing materials at least one of which is capable of flow and apparatus for practising this method.
  • the mixing process is suitable for example for accelerating dissolution, the production of dispersions, suspensions, emulsions, colloidal solutions, for flotation operations, for homogenising, production and treatment of pastes, the acceleration of chemical, physical and atomic reactions and fermentations, the washing of gases in liquids or the extraction of liquids by means of gases and vapours, for other processes for treating materials in which mixing is necessary or advantageous, and for the washing of solid materials.
  • the process is particularly suitable for continuous operation.
  • the resulting winding flow in the material gives rise to a particularly long and turbulent flow path and to correspondingly eflective mixing.
  • the apparatus for practising the process according to the invention comprises a container'for the material and is characterised by at least one outlet conduit, an inlet conduit with a mouth directing the material in a jet in the required direction, and a pump the inlet of which is connected to the outlet conduit and the outlet of which is connected to the inlet conduit.
  • the mouth will usually be ulation of the mixing action from zero upwards, and no moving parts in the mixing vessel so that it can be hermetically closed, in connection with which it may be mentioned that hermetically sealed pumps are known.
  • FIG. 1 is a diagrammatic longitudinal section of a mixing apparatus for continuous operation.
  • FIG. 2 is a section on the line II-II in FIG. 1.
  • FIGS. 3, 4 and 5 show modifications of a part of FIG. 1 in longitudinal section.
  • FIG. 6 is a diagrammatic longitudinal section of an apparatus for mixing a gas with a liquid.
  • FIG. 6a is a detail of FIG. 6.
  • FIGS. 7, 8 and 9 are diagrammatic longitudinal sections of further modifications of FIG. 1. v
  • the apparatus illustrated in FIGS. 1 and 2 comprises a mixing container 1 having a supply pipe 7 and a discharge pipe 9 for the material.
  • Three supply vessels 8a, 8b, 8c only shown in part communicate through respective flow meters 9a, 9b, 9c and regulating valves 10a, 10b, 10c with the supply pipe 7.
  • a regulating valve 16 is included in the discharge pipe 9.
  • the container 1 has three outlet conduits 5a, 5b, 50 with respective regulating valves 6a, 6b, 6c. These outlets are connected to a collecting pipe 5 which leads to the inlet of a pump 2. A space for the driving motor of the pump is marked 2a.
  • the container 1 has an inlet conduit comprising a pipe 3 one end of which projects into the container and the other end being connected to the outlet of the pump 2.
  • the pipe 3 outside the container passes through a heat exchanger 17 by the aid of which the material flowing in the pipe can be heated -or cooled and at the end projecting into the container has a contracted mouthpiece in the form of a nozzle 4.
  • a supply pipe 7 and discharge pipe 9 are connected to the container at locations which in relation to the flow in the inlet 3 are opposite one another and in this direction relatively staggered. At the same time the point of connection of the supply pipe 7 advantageously is at a smaller distance from the nozzle 4 than the point of connection of the discharge pipe 9.
  • the substances at least one of which is a liquid, viscous or pasty fluid and which are intimately mixed for the production of a solution which may be a true solution, or a colloidal solution, or for the production of a dispersion, suspension, emulsion or a paste or for a flotation operation, are supplied to the supply vessels 8a, 8b, 8c and are continuously supplied to the supply pipe 7 and through this to the container 1 in a ratio set by the valves 10a, 10b, 10c and supervised by means of the meters 9a, 9b, 9c.
  • the pump 2 continuously draws out a part of the substances in the container through the outlets 5a, 5b, 5c and pipe 5 and returns this withdrawn portion of the substances under pressure to the container through the pipe 3.
  • this portion of the substances can be taken'from below, in the centre or the top or any determined distribution from these three zones of the container 1.
  • the substance returned to the container 1 undergoes a considerable acceleration of its flow speed at .the nozzle 4. It thus flows at high speed into the substances in the container'l, flow components indicated in FIG. 1 at 11a, 11b thus arising.
  • the flow 11a carries with it substances entering the container 1 through the mouth 13 of the pipe 7 so that these substances take part in the mixing process in the container immediately after their entry. From the flow 11b, part flows 15 are diverted which form the current of substances returned to the container under pressure by the pump 2.
  • the heat exchanger 17 is set in action in the appropriate manner. If the apparatus is also required to carry out any additional action or process such as homogenisation, emulsification, or dispersion, the heat exchanger 17 can be replaced by or combined with a suitable device for the purpose.
  • the nozzle 4 can as FIG. 3 shows be brought close to the bottom 1a of the container 1 at a distance 18 which may amount to from 0.2 to 2 times the diameter of the contracted mouth, in order to achieve an intensive radial mixingaction at this region by the impact of the jet on the container bottom.
  • the same thing can be achieved by the provision of a separate impact wall (not shown) arranged in front of the nozzle 4.
  • Such an impact wall is subject to wear (erosion).
  • a similar but increased effect can be achieved without an impact wall subject to wear by use as shown in FIG. 4 of two nozzles 4a and 4b the mouths of which face one another.
  • Both nozzles 4a and 4b are connected to the pipe 3 which in FIG. 4 is perpendicular to the plane of the drawing but is shown dotted turned into the plane of the drawing.
  • the nozzle 4 (FIG. 1) can have a number of apertures the flow directions of which lie in star formation in a plane or it can have a corresponding angular discharge slit as FIG. 5 shows.
  • the nozzle 4 on the pipe 3 can be constructed as a mixing nozzle and the gas be supplied to this mixing nozzle.
  • FIG. 6 shows a mixing device for this purpose, of which the. parts 1, 2, 3, 4c and 5 cor-respond to the parts 1, 2, 3, 4 and 5 in FIG. 1.
  • the nozzle 4c is a mixing nozzle for example similar to the nozzle of a jet pump.
  • the pipe 3 for the substances and a pipe 23 for the gas are connected to the nozzle 40.
  • This pipe 23 is supplied both through a pipe 22 from a gas holder 20 and through a pipe 21 from the upper gas-containing part 19 of the container 1.
  • the mixing apparatus according to FIG. 6 in addition incorporates a cyclone 25 only indicated symbolically in FIG. 6 but shown diagrammatically in FIG. 6a.
  • This cyclone serves to remove excess gas from the substance in the container 1 which might lead to undesirable foaming. Such an excess of gas can arise for example in fermentation processes.
  • the cyclone 25 is connected by a pipe 26 in which a second pump or blower 2b is included with the upper part of the container 1 and by a branched pipe 28 leading downwardly with the container 1 and with the pipe 5.
  • the branch opening into the pipe 5 is thus under the action of the pump 2.
  • An upwardly directed pipe 27 serves to carry away the excess gas.
  • the container is filled with the fluid to be treated up to a level above the point of connection of the pipe 5 and below the point of connection of the pipe 26, and the holder 20 filled with the gas to be used.
  • the pump 2 is then operated until the liquid has taken up the desired quantity of gas in very fine distribution.
  • the foam forming on the surface of the liquid is transferred to the cyclone 25 which separates the liquid and gas from one another by centrifugal action.
  • the device according to FIG. 6 can be so constructed that the pump 2 also does the duty of the pump 215. Further the device can be constructed to supply gas to a flowing liquid, the liquid being supplied to the container 1 (FIG. 6) at the bottom near the mixing nozzle 4c in the manner above described with reference to FIG. 1 and being led out at the top diametrically opposite the point of supply, while gas is continuously supplied in addition.
  • the container in which mixing is to be effected has a longitudinally extended form it is desirable to provide several nozzles distributed along the length of the container as FIGS. 7 and 8 show.
  • the container 1 is a vessel ar ranged with its axis vertical.
  • the axial length of the vessel is considerably greater than its diameter.
  • a part of the pipe 3 is arranged axially in the vessel 1 and has several nozzles distributed over the height of the vessel.
  • four nozzles 4, 17a, 17b and 18 are shown of which the lowermost 4 is directed downwardly, the next above 17a and the uppermost 18 are directed upwardly while the remaining nozzle 17b is arranged in the manner described above with reference to FIG. 5.
  • the substance discharged through the lowermost nozzle 4 impinges at the bottom of the vessel 1 and is redirected thereby upwardly.
  • the outlet conduit consists of a hose 5d of rubber or similar material or made flexible in any other convenient manner, arranged inside the vessel 1 and a pipe 5e outside the vessel connected to the hose and leading to the pump.
  • the outer end 29 of the hose 5d is carried by a float 30 and is thereby always held just beneath the surface 31 of the substances in the vessel 1. In this way independently of how full the vessel 1 is, the substance is always withdrawn from the uppermost layer of the charge. This is important if liquids with very different specific gravities are being treated together and the vessel is not always charged to the same level.
  • the float 30 is advantageously guided by a guiding device not shown so that it can only move vertically in such a way that the end 29 of the hose is always opposite the supply pipe 7 in relation to the geometrical axis of the pipe 3.
  • the supply pipe 7 and the mouth of the collecting pipe 5d are located at points of the container which are diametrically opposite in relation to the part of the inlet pipe 3 arranged on the axis of the vessel.
  • the container is again an upright vessel 1 the height of which is greater than the diameter.
  • the vessel 1 is divided by several horizontal partitions distributed over its height into chambers.
  • two such partitions 16a and 16b are shown which divide the vessel into three chambers. In each of these chambers the mixing process takes place in the manner described above with reference to FIGS. 1 and 2. It is essential to the mode of operation that the inlet and outlet of each chamber are diametrically opposite in relation to the axis of the container on which the nozzles 4 are arranged.
  • the transfer port 240 which forms the outlet from the lowermost chamber and the inlet to the middle chamber is diametrically opposite the inlet (supply pipe) 7 to the lowest chamber and also diametrically opposite the transfer port 24b which forms the outlet from the middle chamber and the inlet to the uppermost chamber and is located diametrically opposite in relation to the outlet (collecting pipe) 5 of the uppermost chamber.
  • the processes and apparatus above described are suitable for all cases in which it is desired to effect intensive mixing with small expense and in a short time, for example for homogenising, for accelerating dissolution processes, for emulsifying .and dispersing, for the production of suspensions and colloidal solutions, for flotation processes, for accelerating reactions and so forth. If the ap paratus only serves for homogenising it sufi'ices to provide a single supply vessel. If more than three ingredients are to be mixed, the number of supply vessels can be correspondingly increased. It is advantageous, in the diagrammatically illustrated examples to round off the junction of the bottom and top of the container into the side wall in order to avoid dead spaces.
  • the container part 1a can instead be constituted by a slit or perforated pipe disposed within the vessel 1.
  • the heat exchanger 17 instead of being traversed by the pipe 3 leadingfrom the outlet pump might be traversed by the pipe 5 leading to the inlet to the pump or there might be two heat exchangers.
  • the structure is divided into chambers by partitions communicating from one chamber to the other and there need not be two simple transfer ports but piping arrangements could be provided disposed so that the inlet and outlet of each chamber are in relation to the central inlet conduit diametrically oppositely arranged as Well as being at opposite ends of the chamber.
  • a process of mixing materials, of which at least one is capable of flowing, in a container comprising causing said flowable material to flow along a first predetermined flow path within the body of material in the container to pass out of said container, and returning said flowable material into the container in a jet so as to flow along a second predetermined flow path within the body of material in the container, said first and second flow paths being so predetermined as to generate flow components at right angles to one another the resultant of which gives rise to a winding flow of the flowable material through the material in the container to produce a thorough admixture thereof.
  • Apparatus for mixing materials at least one of which is capable of'flowing comprising a container, outlet means from said container, inlet means to said container, conduit means connecting said inlet and outlet means, and pump means in said conduit means operable to withdraw flowable material from said container through said outlet means and to return such flow-able material to said container through said inlet means, said inlet means acting to direct the returning material in a free jet into the mixture within said container and said inlet and outlet means being so relatively arranged that when the container is filled with material and the pump means operated, the material withdrawn through said outlet means follows a first predetermined path through the body of material in the container and the jet of material returned through said inlet means follows a second predetermined path through the body of material in the container so selected in relation to said first predetermined path as to generate flow components at right angles to one another the resultant of which gives rise to a winding flow of the flowable material through the body of material in the container.
  • inlet means comprises an inlet pipe extending vertically into said container and terminating adjacent an impact wall so that material entering said container through said pipe is deflected by said wall and caused to follow a predetermined path extending in a vertical plane and said outlet means is disposed laterally of said container so as to cause outflow of said material along a predetermined path extending in at least one horizontal plane through said container.
  • said inlet means comprises an inlet pipe extending vertically into said container and terminating adjacent an impact wall so that material entering said container through said pipe is deflected by said wall and caused to follow a predetermined path extending in a vertical plane and said outlet means is disposed laterally of said container so as to cause outflow of said material along a predetermined path extending in at least one horizontal plane through said container, and said outlet means comprising a plurality of outlet conduits disposed at different vertically spaced levels so as to cause outflow of material along predetermined paths extending in a plurality of vertically spaced horizontal planes through said container.
  • said inlet means comprises an inlet pipe extending vertically into said container and terminating adjacent an impact will so that material entering said container through said pipe is deflected by said wall and caused to follow a predetermined path extending in a vertical plane and said outlet means is disposed laterally of said container so as to cause outflow of said material along a predetermined path extending in at least one horizontal plane through said container, and said outlet means comprising a plurality of outlet conduits disposed at different vertically spaced levels so as to cause outflow of material along predetermined paths extending in a plurality of vertically spaced horizontal planes through said container, each of said outlet conduits including a flow regulating valve.
  • Apparatus for mixing materials adapted for continuous operation, including at least one supply conduit for introducing unmixed materials into the container and at least one discharge conduit for withdrawing admixed materials from the container, said supply and discharge conduits being connected to relatively stag- .gered supply and discharge ports in opposite wall surfaces of said container.
  • said inlet means comprises an inlet pipe extending vertically into said container and terminating adjacent an impact wall so that material entering said container through said pipe is deflected by said wall and caused to follow a predetermined path extending in a vertical plane and said outlet means is disposed laterally of said container so as to cause outflow of said material along a predetermined path extending in at least one horizontal plane through said container, the termination of said inlet pipe being arranged a distance from said impact wall Which is from 0.2 to 2 times the diameter of said pipe at its termination.
  • Apparatus for mixing material according to claim 4 including a mixing nozzle arranged at the mouth of said inlet means and a gas supply conduit connected to said mixing nozzle.

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US309662A 1962-11-06 1963-09-18 Process for mixing and apparatus for practicing the process Expired - Lifetime US3334868A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1294362A CH412811A (de) 1962-11-06 1962-11-06 Verfahren zum Mischen und Einrichtung zur Durchführung des Verfahrens

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US (1) US3334868A (de)
CH (1) CH412811A (de)
FR (1) FR1368649A (de)
GB (1) GB1058769A (de)
NL (1) NL146064B (de)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393898A (en) * 1967-03-29 1968-07-23 Agricultural Chemical Equipmen Fertilizer blender
US3499632A (en) * 1966-04-27 1970-03-10 Sinclair Research Inc Mixing apparatus
US3503591A (en) * 1967-02-27 1970-03-31 Sunds Ab Mixing apparatus
US3661364A (en) * 1968-02-12 1972-05-09 Haskett Barry F Device for continuous mixing of materials
US3791630A (en) * 1971-03-19 1974-02-12 Grace Mach Co Inc Apparatus for washing, cooling and separating food products
US3807700A (en) * 1972-07-05 1974-04-30 S Kennedy Mixing apparatus for forming a slurry
US3881702A (en) * 1972-04-07 1975-05-06 Keystone Int Blender
EP0031902A1 (de) * 1980-01-21 1981-07-15 Krupp Polysius Ag Pneumatisches Mischsilo
US4337152A (en) * 1978-09-27 1982-06-29 Frebar Holding Ag Aeration apparatus and method
EP0060634A1 (de) * 1981-03-13 1982-09-22 Moore, Barrett & Redwood Limited System zur Entnahme flüssiger Proben
US4491419A (en) * 1982-06-29 1985-01-01 Krupp Polysius Ag Method and apparatus for mixing fine material
US4569596A (en) * 1985-11-26 1986-02-11 Fuller Company Pneumatic conveying and material blending apparatus and method
US4587744A (en) * 1982-09-21 1986-05-13 Huettlin Herbert Fluidized bed apparatus
US4674198A (en) * 1986-03-17 1987-06-23 Huettlin Herbert Apparatus for granulating, pelleting, and coating and/or drying fluid materials
US4697356A (en) * 1985-06-10 1987-10-06 Huettlin Herbert Fluidized bed apparatus
US4736895A (en) * 1985-08-28 1988-04-12 Huettlin Herbert Fluidized bed apparatus
US4762684A (en) * 1985-03-20 1988-08-09 Aluminium Pechiney Apparatus for decomposing sodium aluminate liquors without agitation to produce alumina
DE4415958A1 (de) * 1994-05-06 1995-11-09 Koeth Elektronik Gmbh Vorrichtung zum Mischen von Chemikalien
FR2858249A1 (fr) * 2003-08-01 2005-02-04 Armor Inox Sa Cuve munie d'un dispositif deflecteur pour sortie d'aspiration
US20060291326A1 (en) * 2005-06-22 2006-12-28 Crump J M Mixing System for Increased Height Tanks
US20080074944A1 (en) * 2006-09-21 2008-03-27 Basf Aktiengesellschaft Process for mixing a liquid or mixture of a liquid and a fine solid present in an essentially self-containing vessel
US20100297705A1 (en) * 2009-05-20 2010-11-25 Xyleco, Inc. Processing biomass
US9534242B2 (en) 2009-05-20 2017-01-03 Xyleco, Inc. Processing biomass
US9683250B2 (en) 2011-02-14 2017-06-20 Xyleco, Inc. Processing paper feedstocks
US10188993B1 (en) * 2018-07-17 2019-01-29 Herbert D. Knudsen Blender
US10730778B2 (en) 2017-01-09 2020-08-04 F. Michael Lewis Method and apparatus for increasing dewatering efficiency

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Publication number Priority date Publication date Assignee Title
SE467816B (sv) * 1990-02-19 1992-09-21 Gambro Ab System foer beredning av en vaetska avsedd foer medicinskt bruk
DE4029902C2 (de) * 1990-09-21 1996-10-17 Mann & Hummel Filter Verfahren zum Fördern und Mischen von Schüttgut
CN111512746B (zh) * 2020-04-20 2021-12-28 江苏润扬种业股份有限公司 一种农业用播种装置

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US1849945A (en) * 1929-05-11 1932-03-15 Roy H Mobley Method and means for mixing and applying insulating material
US1926484A (en) * 1930-04-23 1933-09-12 Hoffmann Alfred Method and apparatus for emulsifying
US2464478A (en) * 1945-06-06 1949-03-15 George A Auer Streamcurrent apparatus for handling materials
US2692798A (en) * 1952-09-15 1954-10-26 William L Hicks Spray and agitator apparatus
US2751335A (en) * 1951-02-01 1956-06-19 Exxon Research Engineering Co Method and apparatus for mixing and contacting fluids
US3167306A (en) * 1963-03-14 1965-01-26 Dow Chemical Co Blender

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849945A (en) * 1929-05-11 1932-03-15 Roy H Mobley Method and means for mixing and applying insulating material
US1926484A (en) * 1930-04-23 1933-09-12 Hoffmann Alfred Method and apparatus for emulsifying
US2464478A (en) * 1945-06-06 1949-03-15 George A Auer Streamcurrent apparatus for handling materials
US2751335A (en) * 1951-02-01 1956-06-19 Exxon Research Engineering Co Method and apparatus for mixing and contacting fluids
US2692798A (en) * 1952-09-15 1954-10-26 William L Hicks Spray and agitator apparatus
US3167306A (en) * 1963-03-14 1965-01-26 Dow Chemical Co Blender

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499632A (en) * 1966-04-27 1970-03-10 Sinclair Research Inc Mixing apparatus
US3503591A (en) * 1967-02-27 1970-03-31 Sunds Ab Mixing apparatus
US3393898A (en) * 1967-03-29 1968-07-23 Agricultural Chemical Equipmen Fertilizer blender
US3661364A (en) * 1968-02-12 1972-05-09 Haskett Barry F Device for continuous mixing of materials
US3791630A (en) * 1971-03-19 1974-02-12 Grace Mach Co Inc Apparatus for washing, cooling and separating food products
US3881702A (en) * 1972-04-07 1975-05-06 Keystone Int Blender
US3807700A (en) * 1972-07-05 1974-04-30 S Kennedy Mixing apparatus for forming a slurry
US4337152A (en) * 1978-09-27 1982-06-29 Frebar Holding Ag Aeration apparatus and method
EP0031902A1 (de) * 1980-01-21 1981-07-15 Krupp Polysius Ag Pneumatisches Mischsilo
EP0060634A1 (de) * 1981-03-13 1982-09-22 Moore, Barrett & Redwood Limited System zur Entnahme flüssiger Proben
US4491419A (en) * 1982-06-29 1985-01-01 Krupp Polysius Ag Method and apparatus for mixing fine material
US4587744A (en) * 1982-09-21 1986-05-13 Huettlin Herbert Fluidized bed apparatus
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Also Published As

Publication number Publication date
NL298045A (de) 1965-11-10
NL146064B (nl) 1975-06-16
GB1058769A (en) 1967-02-15
FR1368649A (fr) 1964-07-31
CH412811A (de) 1966-05-15

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