EP1306122A1 - Homogenisierungsvorrichtung für ein Pulvermaterial und Verfahren zur Homogenisierung eines Pulvermaterials - Google Patents
Homogenisierungsvorrichtung für ein Pulvermaterial und Verfahren zur Homogenisierung eines Pulvermaterials Download PDFInfo
- Publication number
- EP1306122A1 EP1306122A1 EP02023626A EP02023626A EP1306122A1 EP 1306122 A1 EP1306122 A1 EP 1306122A1 EP 02023626 A EP02023626 A EP 02023626A EP 02023626 A EP02023626 A EP 02023626A EP 1306122 A1 EP1306122 A1 EP 1306122A1
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- European Patent Office
- Prior art keywords
- rotor
- powder material
- homogenizing device
- homogenizing
- chamber
- 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.)
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- 239000000843 powder Substances 0.000 title claims abstract description 105
- 239000000463 material Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims description 17
- 238000000265 homogenisation Methods 0.000 claims abstract description 46
- 239000002346 layers by function Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 23
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- CFQCIHVMOFOCGH-UHFFFAOYSA-N platinum ruthenium Chemical compound [Ru].[Pt] CFQCIHVMOFOCGH-UHFFFAOYSA-N 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000006266 hibernation Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- 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
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/84—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers rotating at different speeds or in opposite directions about the same axis
-
- 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
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/85—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers on separate shafts
-
- 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
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
-
- 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
- B01F23/60—Mixing solids with solids
Definitions
- the invention relates to a homogenizing device for a powder material.
- the invention relates to a method for homogenizing a powder material.
- powder material in many applications where a powder material is used, for example, in the production of electrochemical functional layers or in the surface coating, it is important that the powder material is largely homogenized and in particular no too large powder particle cogglomerates available.
- powder material in which it is a mixture of different components then be homogeneously mixed.
- the invention is based on the object, a homogenizer and to provide a method of homogenizing a powder material, by means of which or by means of which a high degree of homogenization can be achieved even with fine-grained powder materials.
- a homogenization device for a powder material with a homogenization chamber that can be filled with the powder material dissolved, in which a first rotor is rotatably arranged and spaced from this, a second rotor is rotatably arranged, wherein the rotate both rotors counter-clockwise to create opposing flows, over which the powder material is friable.
- the two rotors generate opposing currents and in particular Air flows, so that the powder material between the two rotors in suspended.
- the air flows in turn cause powder particle flows in the powdered fluid.
- Powder mixtures for electrochemical functional layers often contain as binder organic substances such as PTFE (polytetrafluoroethylene).
- binder organic substances such as PTFE (polytetrafluoroethylene).
- PTFE polytetrafluoroethylene
- One such binder forms threads, on the one hand, the binding effect between powder particles and in particular powder particle cogglomerates and, on the other hand, the layer produced is hydrophobic Features. A destruction of these threads by mechanical action accordingly degrades the electrochemical properties of a corresponding functional layer.
- the homogenization is according to the invention achieved without such harmful mechanical action.
- first rotor and the second rotor are substantially the same rotational speed rotatable in opposite directions, so on the one hand to hold the powder material in suspension between the two rotors and to avoid the other force gradient in the total flow, which have a non-radial preferred direction.
- a synchronization device for Synchronization of a drive for the first rotor and a drive for the second rotor is provided to set the same rotational speeds to ensure the two rotors.
- the synchronization device can this be an electronic circuit, which, for example, two electric motors synchronized with each other. It may also be a mechanical device, which, for example the two rotors are synchronized with each other via a gearbox, if only a single drive is provided.
- a distance of a rotor to a Boundary wall of the homogenization chamber is less than one fifth of the Distance between the first rotor and the second rotor. Especially is the distance of a rotor to a boundary wall, through which a Shaft to drive the rotor passes, less than a fifth of the said Distance between the first rotor and the second rotor, so To avoid dead spaces in the homogenization chamber. Continues to extend a rotor advantageously up to the vicinity of lateral boundary walls the homogenization chamber.
- a drive for a rotor is designed so that the rotor speeds of at least 8000 revolutions per minute are achievable.
- the rotors with rotational speeds operated between 10,000 and 20,000 revolutions per minute become; homogenized powder materials for the production of to provide electrochemical functional layers.
- a rotor has one or more rotor blades, which are provided with a non-stick coating for powder material. This prevents sticking of powder material to a rotor.
- first rotor and the second rotor at opposite Bound walls of the homogenization chamber stored are. This allows the powder between the two rotors in the Levitate, with the proportion of dead spaces in the homogenization chamber is minimized.
- a first homogenizing device is used with a first chamber and the first rotor and a essentially identically formed second homogenizing device with a second chamber and the second rotor are provided, wherein the first homogenizer and the second homogenizer are positioned relative to each other so that the homogenization chamber is formed by the first chamber and the second chamber.
- the inventive Homogenizing device can then be through the two form the same trained homogenization by these accordingly be positioned together. The constructive and production engineering Effort for the preparation of the homogenization with the Both counter-rotating rotors is thereby kept low.
- the first homogenizer is on the second Homogenizing device can be positioned; where then the chambers so on the respective homogenizing device are arranged that they a recess on a corresponding side of the respective homogenizing device are formed, d. H. towards the outside an open side exhibit.
- the homogenizers are formed substantially the same, then are in superposition also the two rotors automatically in opposite directions.
- first homogenizer and second Homogenizing relative to each other fixable so as the homogenization chamber to build.
- the homogenization chamber is filled prior to fixation.
- the design effort for the production of a homogenizing device according to the invention is minimized thereby, in particular no filling locks provided for powder material in the homogenization chamber Need to become.
- the object mentioned at the outset is also according to the invention in a method for homogenizing a powder material, in which by a first rotor an air flow and by a second rotor a opposite flow of air is generated, the powder in opposite directions Currents is being grated.
- the opposing currents are in particular around Pulverfluidströmmaschine, which in turn driven by the air currents are.
- the powder material via the two air flows is held in suspense. This can be an intense Reaching contact between the powder particles in the particle flows, whereby the homogenization due to internal friction in the powder material is reached.
- the powder material is homogenized at most for so long that no decomposition processes like chemical processes take place in it.
- the device according to the invention or by means of the invention Method can be homogenized powders as coating materials for produce an electrochemical functional layer.
- These powders are in particular Mixtures of different components. It can be done with it produce electrochemical functional layers with high reproducibility, because of the high - reproducible - degree of homogenization of the Powder material the statistical size variations in the homogenized Powder material are minimized. In particular, even fine-grained Homogenize powder mixtures that are beneficial as starting materials for electrochemical functional layers.
- the powder material comprises a mixture of a catalyst material such as platinum or platinum ruthenium and a binder such as PTFE.
- the binder provides a bond between powder material particles and in particular powder material clogglomerates. It may also be for the example hydrophobic properties of an electrochemical functional layer in particular to prevent the wetting of an electrode layer.
- the catalyst material is supported, for example on carbon black or carbon particles, in particular the material costs minimize.
- the mixture comprises an electron-conducting material around which Electron conduction, for example, to electrode layers for a fuel cell sure.
- it is the carrier material for the catalyst around an electron conductor.
- the mixture is a proton-conducting material comprises the proton conduction to a proton-conducting membrane sure. This effectively becomes the surface of a corresponding one Electrode enlarged.
- the mixture comprises a pore-forming agent, in this way the effective reaction surface of a manufactured Increase layer.
- An embodiment of a homogenization device according to the invention which is designated as a whole by 10 in FIG. 2, comprises a first one Homogenizer 12 and a second homogenizer 14; these two homogenizers essentially are the same ( Figure 1), so that in the following only the second homogenizer 14 will be described.
- This includes a housing 16 in which a chamber 18 is formed, which to an end face of the housing 16 is open.
- This chamber 18 is with a powder material 20 to be homogenized.
- this chamber 18 is rotationally symmetrical about a housing axis.
- a Rotor 22 is arranged, which via a shaft 24 in the second chamber 18th can rotate, wherein a drive 26, which arranged in the housing 16 is, the rotation of the shaft 24 causes.
- the drive 26 is in particular around an electric motor.
- the second chamber 18 has lateral boundary walls 28 and a lower Boundary wall 30 on.
- the shaft 24 passes through the lower boundary wall 30 and is in particular rotatable with respect to this stored.
- a seal 32 around the Shaft 24 is arranged, which is in particular a double lip seal can act.
- the rotor 22, which is associated with the second homogenizing device 14 is (second rotor 22) is formed, for example, two-lobe.
- the second rotor 22 is arranged in the second chamber 18 that the Proportion of dead spaces in a corresponding homogenization chamber 33 (Figure 2) is as low as possible.
- the rotor 22 extends to the vicinity the lateral boundary walls 28 and also the distance of the rotor 22 to the lower boundary wall 30 is minimized, as discussed in more detail below becomes.
- the first homogenizer 12 is formed with a first chamber 34, a first drive 36 and a first rotor 38.
- the first homogenizing device 12 in this case has a housing 40.
- the housing 16 and corresponding to the housing 40 has an upper end face 42, which is substantially flat, so that a bearing surface formed is to the first homogenizer 12 on the second Positioning homogenizer 14 and the homogenization chamber 33 from the second chamber 18 and the first chamber 34 to form.
- the end face 42 is in particular an annular surface.
- the two homogenizers 12 and 14 are then positioned that a rotation axis 44 for the first rotor 38 and a rotation axis 46th for the second rotor 22 substantially coincide.
- a rotation axis 44 for the first rotor 38 and a rotation axis 46th for the second rotor 22 substantially coincide.
- the Homogenization chamber 33 rotationally symmetrical.
- a distance A between the two rotors 22 and 38 in the homogenization chamber 33 is in particular at least five times larger than a distance B between the respective rotor and its associated lower Boundary wall (second rotor 22 and boundary wall 30, during positioning the first homogenizer 12 on the second homogenizer 14, the corresponding boundary wall is an upper one Boundary wall). In turn, the proportion of dead spaces in the Homogenization chamber 33 minimized.
- drives 26 and 36 can be rotational speeds for the respectively associated Reach rotors 22 and 38, which are at least greater than 8000 Revolutions per minute. Good homogenization results for powder materials for the production of electrochemical functional layers have at speeds of rotation between 10,000 and 20,000 revolutions per Minute to achieve.
- a first air flow is generated via the first rotor 38 and via the second rotor 22 generates a second air flow, wherein the two air currents are in opposite directions, since the two rotors 22 and 38 in the homogenization chamber 33 in opposite directions rotate.
- the rotational speeds are correct but the amount in substantially coincide.
- a synchronization device 48 is provided, which synchronizes the drive of the two rotors 38 and 22 with each other.
- it may be an electronic synchronization device act, which synchronizes electric motors.
- a the only drive for the two rotors 22 and 38 is provided and the Synchronizing device causes the two rotors in opposite directions the homogenization chamber 33 rotate by, for example, a corresponding Gear is provided to the different direction of rotation but to effect at substantially the same rotational speed.
- the homogenizing device according to the invention functions as follows:
- One of the homogenizing devices is to be homogenized with the Powder material 20 filled, for example, the second homogenizer 14 with its second chamber 18. Subsequently, the first homogenizer 12 positioned on the second homogenizer 14 and these two bodies are fixed together so the Homogenization chamber 33 to form.
- the rotors 22 and 38 are then put into operation, the rotational speed for example, between 10,000 revolutions per minute and 20000 revolutions per minute.
- the two rotors 22 and 38 are included synchronized with each other in such a way that they essentially counteract the have the same rotational speed.
- the homogenization of the powder material 20 by the homogenizer 10 is thus essentially not by a direct mechanical Influencing the rotors 22 and 38 on the powder material 20th (Grinding), but by internal friction in the powder fluid, the rotors 22, 38 on the respective caused counterflow air flows the drive represent for the powder fluid flows. Since the powder material between the Rotors 22 and 38 is held in suspension, the proportion of dead spaces minimized in the homogenization chamber 33; in such dead spaces could accumulate powder clogglomerates that are not further grated and thus adversely affect the homogenization result.
- the homogenizing device according to the invention and the inventive Methods can be used advantageously for the production of Powder material for electrochemical functional layers and in particular catalytic layers; as with polymer electrolyte membrane fuel cells, for example (PEFC) can be used with hydrogen or methanol as Reaction gas. It can also be electrochemical layers for battery systems produce with such homogenized powders or electrochemical Layers for reactors and reformers. In addition, let yourself with correspondingly homogenized powder materials also powder coatings produce. It is also possible surfaces of heat exchangers or absorbers to produce with correspondingly homogenized powders.
- PEFC polymer electrolyte membrane fuel cells
- Useful powder materials include a catalyst such as platinum or Platinum-ruthenium, said catalyst being in particular supported, d. H. sitting on soot particles or carbon particles.
- a binder is provided, which is an organic substance such as PTFE (Polytetrafluoroethylene), which on the one hand with the carrier particles binds to the catalyst and on the other has hydrophobic properties, so that prevent moisture penetration of the functional layer produced leaves.
- pore-forming agents can be added and also proton-conducting Materials to effect an effective surface enlargement and the increase electrochemical reaction areas and a proton conduction to ensure a membrane. It can also be electron-conducting materials be present, with carbon black or carbon as a carrier particles this already act electronically.
- the aim is to produce powder mixtures which are as fine as possible.
- the homogenizing device according to the invention makes it possible to homogenize Powder mixtures produce with particles, which for example smaller than 50 nm and having cogglomerates smaller than 500 nm.
- a powder homogenized according to the invention can be passed through a powder conveying device on a support, such as a membrane, apply.
- a powder conveying device and a corresponding method for powder application on a carrier is in the non-prepublished German application No. 101 34 498.8 of July 2, 2001 to the same Applicant, to which expressly incorporated herein by reference.
- FIGS. 3 and 4 are scanning electron micrographs of According to the invention homogenized powder material shown, wherein it is a carbon-supported platinum catalyst with PTFE as a binder.
- Figure 3 shows a photograph with twenty thousand magnification and
- Figure 4 shows a recording of the same material with fifty thousand magnification.
- the inschwe By the method according to the invention, d. H. the inschwemid the Powder particles between the two rotors 22 and 38 and attrition of the Powder material due to internal friction can ensure that even during homogenization, the threads are not destroyed.
- a knife for example in the form of a rotor knife
- the powder material acts Danger of destroying the PTFE threads.
- a corresponding powder material is in the homogenizer 10 homogenized only so long that it is ensured that no Decomposition processes occur in the powder material, such as chemical reactions that could alter the powder material so that the electrochemical properties of correspondingly produced functional layers are deteriorated.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Inert Electrodes (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
- Figur 1
- in schematischer Ansicht Ausführungsbeispiele zweier Homogenisierungseinrichtungen;
- Figur 2
- eine Homogenisierungsvorrichtung, welche durch Zusammensetzen der beiden Homogenisierungseinrichtungen gemäß Figur 1 gebildet ist;
- Figur 3
- ein rasterelektronenmikroskopisches Bild eines mit einer erfindungsgemäßen Homogenisierungsvorrichtung homogenisierten Pulvermaterials (geträgertes Katalysatormaterial mit PTFE-Zusatz als Bindemittel), wobei der Bildausschnitt ca. 6 µm groß ist und
- Figur 4
- eine rasterelektronenmikroskopische Aufnahme des Pulvermaterials, welches der Aufnahme gemäß Figur 3 zugrundeliegt, jedoch mit größerer Auflösung (mit ca. 2,5-fach größerer Auflösung).
Claims (22)
- Homogenisierungsvorrichtung für ein Pulvermaterial (20) mit einer mit dem Pulvermaterial (20) befüllbaren Homogenisierungskammer (33), in welcher ein erster Rotor (38) drehbar angeordnet ist und beabstandet zu diesem ein zweiter Rotor (22) drehbar angeordnet ist, wobei die beiden Rotoren (38, 22) gegenläufig rotieren, um gegenläufige Strömungen zu erzeugen, über die das Pulvermaterial (20) zerreibbar ist.
- Homogenisierungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der erste Rotor (38) und der zweite Rotor (22) mit im wesentlichen gleicher Drehgeschwindigkeit gegenläufig rotierbar sind.
- Homogenisierungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß eine Synchronisierungsvorrichtung (48) zur Synchronisierung eines Antriebs (36) für den ersten Rotor (38) und eines Antriebs (26) für den zweiten Rotor (22) vorgesehen ist.
- Homogenisierungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß eine Drehachse (46) für den ersten Rotor (38) und eine Drehachse (44) für den zweiten Rotor (22) im wesentlichen zusammenfallen.
- Homogenisierungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß ein Abstand (B) eines Rotors (38; 22) zu einer Begrenzungswand (30) der Homogenisierungskammer (33) kleiner ist als ein Fünftel des Abstandes (A) zwischen dem ersten Rotor (38) und dem zweiten Rotor (22).
- Homogenisierungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß durch die beiden Rotoren (38, 22) gegenläufige Strömungen in der Homogenisierungskammer (33) erzeugbar sind.
- Homogenisierungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß ein Antrieb (26; 36) für einen Rotor (22; 38) so ausgebildet ist, daß Rotordrehzahlen von mindestens 8000 Umdrehungen pro Minute erreichbar sind.
- Homogenisierungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß ein Rotor (22; 38) ein oder mehrere Rotorblätter aufweist, welche mit einer Antihaftbeschichtung für Pulvermaterial versehen sind.
- Homogenisierungsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der erste Rotor (38) und der zweite Rotor (22) an gegenüberliegenden Begrenzungswänden (30) der Homogenisierungskammer (33) gelagert sind.
- Homogenisierungsvorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine erste Homogenisierungseinrichtung (12) mit einer ersten Kammer (34) und dem ersten Rotor (38) und einer im wesentlichen gleich ausgebildeten zweiten Homogenisierungseinrichtung (14) mit einer zweiten Kammer (18) und dem zweiten Rotor (22), wobei die erste Homogenisierungseinrichtung (12) und die zweite Homogenisierungseinrichtung (14) so relativ zueinander positionierbar sind, daß die Homogenisierungskammer (33) durch die erste Kammer (34) und die zweite Kammer (18) gebildet ist.
- Homogenisierungsvorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die erste Homogenisierungseinrichtung (12) auf der zweiten Homogenisierungseinrichtung (14) positionierbar ist.
- Homogenisierungsvorrichtung nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß die erste Homogenisierungseinrichtung (12) und zweite Homogenisierungseinrichtung (14) relativ zueinander fixierbar sind.
- Homogenisierungsvorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß vor einer Fixierung die Homogenisierungskammer (33) befüllt wird.
- Verfahren zur Homogenisierung eines Pulvermaterials, bei welchem durch einen ersten Rotor eine Luftströmung und durch einen zweiten Rotor eine gegenläufige Luftströmung erzeugt wird, wobei das Pulver in gegenläufigen Strömungen zerrieben wird.
- Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß das Pulvermaterial über die beiden Luftströmungen in der Schwebe gehalten wird.
- Verfahren nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß das Pulvermaterial höchstens so lange homogenisiert wird, daß keine Zersetzungsprozesse in dem Pulvermaterial stattfinden.
- Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 13 oder des Verfahrens nach einem der Ansprüche 14 bis 16 zur Herstellung von homogenisiertem Pulver als Beschichtungsmaterial für eine elektrochemische Funktionsschicht.
- Verwendung der Vorrichtung nach Anspruch 17, dadurch gekennzeichnet, daß das Pulvermaterial eine Mischung aus einem Katalysatormaterial und einem Bindemittel ist.
- Verwendung der Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, daß das Katalysatormaterial geträgert ist.
- Verwendung der Vorrichtung nach einem der Ansprüche 17 bis 19, dadurch gekennzeichnet, daß die Mischung ein elektronenleitendes Material umfaßt.
- Verwendung der Vorrichtung nach einem der Ansprüche 17 bis 20, dadurch gekennzeichnet, daß die Mischung ein protonenleitendes Material umfaßt.
- Verwendung der Vorrichtung nach einem der Ansprüche 17 bis 21, dadurch gekennzeichnet, daß die Mischung einen Porenbildner umfaßt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10154123A DE10154123A1 (de) | 2001-10-26 | 2001-10-26 | Homogenisierungsvorrichtung für ein Pulvermaterial und Verfahren zur Homogenisierung eines Pulvermaterials |
DE10154123 | 2001-10-26 |
Publications (2)
Publication Number | Publication Date |
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EP1306122A1 true EP1306122A1 (de) | 2003-05-02 |
EP1306122B1 EP1306122B1 (de) | 2007-03-21 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP02023626A Expired - Lifetime EP1306122B1 (de) | 2001-10-26 | 2002-10-18 | Homogenisierungsvorrichtung für ein Pulvermaterial und Verfahren zur Homogenisierung eines Pulvermaterials |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1306122B1 (de) |
AT (1) | ATE357285T1 (de) |
DE (2) | DE10154123A1 (de) |
DK (1) | DK1306122T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3381341A1 (de) * | 2017-03-31 | 2018-10-03 | Kenwood Limited | Küchengerät und elektromotoranordnung dafür |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004017161A1 (de) * | 2004-03-31 | 2005-10-20 | Deutsch Zentr Luft & Raumfahrt | Pulverpartikel-Aufbringverfahren und Aufbringvorrichtung für Pulverpartikel |
DE102004038413B4 (de) * | 2004-07-30 | 2006-09-28 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren und Vorrichtung zur Herstellung einer Beschichtung mit räumlich variierenden Eigenschaften |
CN109225034A (zh) * | 2018-08-16 | 2019-01-18 | 辛艺 | 一种小体型的气动搅拌机 |
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DE704372C (de) * | 1937-07-10 | 1941-03-28 | J S Petzholdt Fa | Rundreiber zum Verfeinern von Kakao- oder Schokolademassen |
US3278661A (en) * | 1962-06-07 | 1966-10-11 | Beck Erich | Method of compacting and agglomerating thermoplastic materials ranging from powders to granules |
US3307834A (en) * | 1963-03-05 | 1967-03-07 | Pilkington Brothers Ltd | Methods for mixing finely-divided materials |
US3578649A (en) * | 1963-05-14 | 1971-05-11 | Pechiney Saint Gobain | Preparation of vinyl polymers |
US3937446A (en) * | 1974-09-30 | 1976-02-10 | Elba-Werk Maschinen-Gesellschaft Mbh & Co. | Apparatus for mixing of building materials |
GB2046109A (en) * | 1979-03-06 | 1980-11-12 | Imi Refiners Ltd | Fume agglomeration |
EP0354888A1 (de) * | 1988-08-12 | 1990-02-14 | Novlab Innovation Ab | Rührwerk für Kochgefässe |
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DE412197C (de) * | 1925-04-11 | Hartstoff Metall Akt Ges Hamet | Verfahren zum Zerkleinern von Stoffen in Wirbelmuehlen | |
JPH04110051A (ja) * | 1990-08-30 | 1992-04-10 | Morikazu Usami | 製粉方法 |
-
2001
- 2001-10-26 DE DE10154123A patent/DE10154123A1/de not_active Ceased
-
2002
- 2002-10-18 AT AT02023626T patent/ATE357285T1/de not_active IP Right Cessation
- 2002-10-18 DE DE50209756T patent/DE50209756D1/de not_active Expired - Lifetime
- 2002-10-18 EP EP02023626A patent/EP1306122B1/de not_active Expired - Lifetime
- 2002-10-18 DK DK02023626T patent/DK1306122T3/da active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE704372C (de) * | 1937-07-10 | 1941-03-28 | J S Petzholdt Fa | Rundreiber zum Verfeinern von Kakao- oder Schokolademassen |
US3278661A (en) * | 1962-06-07 | 1966-10-11 | Beck Erich | Method of compacting and agglomerating thermoplastic materials ranging from powders to granules |
US3307834A (en) * | 1963-03-05 | 1967-03-07 | Pilkington Brothers Ltd | Methods for mixing finely-divided materials |
US3578649A (en) * | 1963-05-14 | 1971-05-11 | Pechiney Saint Gobain | Preparation of vinyl polymers |
US3937446A (en) * | 1974-09-30 | 1976-02-10 | Elba-Werk Maschinen-Gesellschaft Mbh & Co. | Apparatus for mixing of building materials |
GB2046109A (en) * | 1979-03-06 | 1980-11-12 | Imi Refiners Ltd | Fume agglomeration |
EP0354888A1 (de) * | 1988-08-12 | 1990-02-14 | Novlab Innovation Ab | Rührwerk für Kochgefässe |
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EP3381341A1 (de) * | 2017-03-31 | 2018-10-03 | Kenwood Limited | Küchengerät und elektromotoranordnung dafür |
Also Published As
Publication number | Publication date |
---|---|
DE50209756D1 (de) | 2007-05-03 |
EP1306122B1 (de) | 2007-03-21 |
DE10154123A1 (de) | 2003-05-15 |
ATE357285T1 (de) | 2007-04-15 |
DK1306122T3 (da) | 2007-05-29 |
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