EP4452503B1 - Vorrichtung und verfahren zum mahlen und mischen von pulvern mit gegenläufigen mahl- und mischbewegungselementen - Google Patents

Vorrichtung und verfahren zum mahlen und mischen von pulvern mit gegenläufigen mahl- und mischbewegungselementen

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Publication number
EP4452503B1
EP4452503B1 EP22839405.2A EP22839405A EP4452503B1 EP 4452503 B1 EP4452503 B1 EP 4452503B1 EP 22839405 A EP22839405 A EP 22839405A EP 4452503 B1 EP4452503 B1 EP 4452503B1
Authority
EP
European Patent Office
Prior art keywords
grinding
mixing
moving member
mixing moving
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP22839405.2A
Other languages
English (en)
French (fr)
Other versions
EP4452503A1 (de
EP4452503C0 (de
Inventor
Méryl BROTHIER
Stéphane VAUDEZ
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Publication of EP4452503A1 publication Critical patent/EP4452503A1/de
Application granted granted Critical
Publication of EP4452503B1 publication Critical patent/EP4452503B1/de
Publication of EP4452503C0 publication Critical patent/EP4452503C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/163—Stirring means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/1815—Cooling or heating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/20—Disintegrating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C2017/165—Mills in which a fixed container houses stirring means tumbling the charge with stirring means comprising more than one agitator

Definitions

  • the present invention relates to the field of mixing and grinding of powders, in particular the grinding and cryogenic mixing of powders, in particular in the liquid phase, in particular in the presence of a cryogenic fluid, to obtain submicron or even nanometric particles.
  • the invention preferably finds its application for any process and for any factory or industry implementing operations of mixing and/or grinding powders, in particular micronization of granular media with the aim in particular of obtaining improved performances in terms of specific energy applied and/or mixing or grinding time and/or in terms of grinding capacity of materials that are difficult to grind. It allows for example the manufacture of nanopowders that are difficult to synthesize chemically or the micronization of medicines or cosmetic materials for example.
  • the invention thus proposes a device for grinding and mixing, preferably cryogenic, powders comprising grinding and mixing rotors driven in a counter-rotating manner, as well as an associated grinding and mixing method, preferably cryogenic.
  • grinders are used that can vary greatly depending on the loads to be ground and their fragmentation capacity, such as knife, flail, hammer, roller, ball, air jet, and other mills.
  • the main disadvantages of the second category of mixer/grinder mentioned above have their origins in: either the weakness of the energy transmissible to the medium to be mixed/grinded (comforter effect or Archimedes screw type mobiles), which will limit the performance of the devices in terms, for example, of processing time and/or achievable granulometry performance; or the fact that they suffer from a limit on the energy level applicable to the material to be ground, in particular due to the forces centrifugal forces induced during the rotation of the moving parts (attrition blades, rotors/turbines, propellers).
  • a liquefied gas as a liquid which, after volatilization at room temperature and atmospheric pressure, makes it possible to avoid having to treat the liquid phase to recover the ground material.
  • the use of liquefied gas due to its very low induced temperature (of the order of - 200°C for liquid nitrogen at atmospheric pressure), also makes it possible to weaken the materials to be ground and therefore limits the energy used to grind a given mass of material.
  • Known grinding devices suffer very largely, and recurrently, from pollution of the load by abrasion or wear induced by the grinding media and at the right of the grinding tank. This is due to the fact that the grinding media and/or the material to be ground has a hardness which may be greater than or equal to that of the material constituting the grinder tank.
  • micronization of grinding powders is often complicated to optimize for particle size targets below one micron and for materials known to be difficult to grind.
  • Micronization methods are not very efficient, using speeds limited to the critical speed, which means that the materials have to be processed for several hours, or even several days, to achieve the desired particle sizes.
  • the useful volume of micronizers is often small and submicron-targeted grinders are difficult or impossible to extrapolate to industrial scales.
  • a means is desired to efficiently apply energy to a powder in order to finely grind it, this powder being preferably suspended in a liquefied gas.
  • this powder By forming a liquid/solid suspension, the grinding medium is subjected to centrifugal forces when the grinding rotor is rotated beyond a so-called “critical" speed. Grinding is therefore limited by this critical speed which can be quickly reached for large grinders (industrial purpose). There is therefore a need to overcome this critical speed threshold and thereby increase grinding efficiency as well as the useful grinding volume.
  • the grinding and mixing device is preferably a cryogenic grinding and mixing device, the grinding tank comprising in particular a cryogenic fluid, in particular liquid nitrogen, and being advantageously heat-insulated.
  • the distance between said at least one first grinding and mixing mobile and said at least one second grinding and mixing mobile may be less than three times the smallest diameter of said at least one first grinding and mixing mobile and one second grinding and mixing mobile.
  • the distance between the bottom of the grinding tank and the grinding and mixing rotor closest to the bottom of the grinding tank may be less than twice the diameter of the grinding and mixing rotor.
  • the distance between two superimposed grinding and mixing rotors may be between one and five times the diameter of the grinding and mixing rotor.
  • the power transmission system may be an epicyclic gear train power transmission system.
  • the power transmission system may comprise at least two epicyclic gear trains, in particular as many epicyclic gear trains as there are grinding and mixing mobiles.
  • the epicyclic gear train(s) may constitute a thermal cover for said at least one first grinding and mixing mobile and a second grinding and mixing mobile.
  • said at least one first grinding and mixing mobile and one second grinding and mixing mobile may advantageously be chiral mobiles.
  • the invention also relates, according to another of its aspects, to a method for grinding and mixing powders, in particular in the presence of a cryogenic fluid, for example liquid nitrogen, characterized in that it is implemented by means of a device as defined above.
  • a cryogenic fluid for example liquid nitrogen
  • the method can be carried out by means of a cryogenic grinding and mixing device using a cryogenic fluid in the grinding tank, in particular liquid nitrogen, in direct contact with the powders to be ground.
  • the method may comprise the step of counter-rotating said at least one first grinding and mixing mobile and a second grinding and mixing mobile.
  • the method may comprise the step of rotating said at least one first grinding and mixing rotor and one second grinding and mixing rotor at a speed of between 10% and 150% of the cavitation speed of the fluid used in the grinding tank.
  • the grinding and mixing device and method according to the invention may include any of the characteristics set out in the description, taken in isolation or in any technically possible combination with other characteristics.
  • FIG. 1 an example of a grinding and mixing device 1 according to the invention is shown with a first mode of driving the grinding and mixing mobiles 4a, 4b.
  • the figure 2 represents a grinding and mixing device 1 with a second mode of driving the grinding and mixing mobiles 4a, 4b.
  • the use of a counter-rotating grinding and mixing system to agitate the granular suspension to be micronized can advantageously make it possible to locally cancel the centrifugation forces and to double the surface speeds achievable between the powder P to be ground and the grinding and mixing rotors 4a, 4b.
  • this principle can make it possible to multiply by a factor which can be close to four the energy applied to the system to be ground.
  • the grinding and mixing device 1 firstly comprises a grinding and mixing tank 2.
  • the grinding tank 2 is in the form of a double jacket for maintaining a low partial pressure (at least primary vacuum) in the inter-wall volume formed by the double jacket. It thus ensures thermal insulation.
  • the grinding tank 2 has the function of receiving the load of solid powders P to be ground and mixed in liquid phase, in particular liquefied gas, for example liquid nitrogen, as well as the grinding media Mb, for example balls, pellets, among others, visible on the Figures 1 and 2 .
  • liquefied gas for example liquid nitrogen
  • Mb for example balls, pellets, among others
  • the grinding tank 2 is generally cylindrical in shape. Its height is preferably between 0.5 and 5 times its diameter. It may optionally include a low point drain that can be used to evacuate the load and/or recycle it within the tank 2.
  • the grinding and mixing device 1 comprises a first grinding, mixing and stirring device 4a and a second counter-rotating grinding, mixing and stirring device 4b arranged inside the grinding tank 2.
  • the grinding and mixing mobiles 4a, 4b can be of different types, for example turbine type, inclined or non-inclined blades, attrition mobiles or propellers.
  • chiral configurations can be preferred, namely one of the rotors is dextrorotatory and the other is levorotatory.
  • They typically have a diameter such that the ratio between the diameter of the tank and the diameter of the grinding and mixing unit is between 0.2 and 0.9.
  • the mobiles 4a and 4b may or may not have the same diameter.
  • the distance h 1 between the two mobiles 4a and 4b, visible on the figure 1 is less than three times their diameter in the case of identical diameters, or even the smallest diameter in the case of different diameters.
  • the integration of two grinding and mixing mobiles 4a, 4b rotated in reverse movements makes it possible to obtain several advantages, and in particular an increase in the extent of the mixing and grinding zones, an increase in the speed gradients, and an increase in the impact frequencies.
  • the grinding and mixing mobiles 4a, 4b are preferably configured to have opposite speeds at all points and in all times of mixing and grinding. In this sense, the grinding and mixing mobiles 4a, 4b are preferably coaxial and driven by an anticlockwise rotation.
  • the grinding and mixing rotors 4a, 4b can be formed in various ways depending on the specificities, in particular the viscosity and the density of the medium to be ground and mixed.
  • the grinding and mixing rotors 4a, 4b can be classified into three families, namely axial, radial and/or hybrid type. These configurations are described more precisely with reference to Figures 3A to 5B .
  • a grinding and mixing mobile 4a, 4b with axial flow is shown, of the marine propeller type.
  • the fluid flow lines LC are ascending at the periphery of the wall and descending in the close vicinity of the axis of rotation of the mobile 4a, 4b.
  • a radial flow grinding and mixing mobile 4a, 4b is shown, of the six-blade turbine type.
  • the fluid flow lines LC are then partitioned into two zones: one below the mobile and the other above the mobile.
  • a grinding and mixing mobile 4a, 4b with hybrid or mixed flow is shown, of the inclined straight blade type.
  • the fluid flow lines LC are a combination of the two previous cases.
  • Figure 6A is a sectional view illustrating the LC streamlines induced by two counter-rotating axial-type grinding and mixing rotors 4a, 4b, here in the form of coaxial anti-rotational marine propellers.
  • the Figure 6B is a top view of these mobiles 4a, 4b.
  • Figure 6A illustrates the value ratios between the pumping flow rate Qp, the circulation flow rate Qc and the flow rate Qe which is equal to the difference between the circulation flow rate Qc and the pumping flow rate Qp.
  • r c represents the circulation radius.
  • Figure 7A is a sectional view illustrating the LC streamlines induced by two counter-rotating radial-type grinding and mixing rotors 4a, 4b, here in the form of a turbine with anti-rotating coaxial blades.
  • the Figure 7B is a top view of these mobiles 4a, 4b.
  • Figure 7A illustrates the height h of the grinding turbine element and the extent e of the flow area representing the difference between the circulation flow rate Qc and the pumping flow rate Qp.
  • the aim is to create, by rotating the grinding and mixing rotors 4a, 4b, areas of streamlines LC which telescope as much as possible.
  • the grinding and mixing rotors 4a, 4b being rotated in an anticlockwise manner, this generates opposite flow streams which allow the impact of the grinding media Mb which fractionate the powders P to be ground in their contact or impact zone.
  • This critical speed can be estimated in several ways described below, and in particular by analogy with the critical speed of rotary calender mills and by calculating the speed threshold.
  • the critical speed can be considered as the speed corresponding to the conditions where the centrifugal force becomes greater than the force of gravity applied to the fluid in tank 2.
  • Nc 42 , 7 D
  • the critical speed corresponding to this mechanical limit is a function in particular of the viscosity and density of the fluid in the direction of the grinding tank 2 but in general, it is considered that it is not admissible to exceed peripheral speeds at the ends of the grinding and mixing mobiles 4a, 4b greater than approximately 10 or 15 m/s.
  • Cavitation namely the appearance of vapor within the liquid, appears as soon as the pressure in the liquid undergoing the displacement of a surface reaches the saturated vapor pressure (Pvs) of the liquid due to the displacement of this surface which generates a pressure gradient by its movement.
  • Pvs saturated vapor pressure
  • the cavitation speed is of the order of 20 m/s.
  • this speed can be lower, which limits the speed applicable to the grinding and mixing mobile 4a, 4b in cryogenic phase grinders (case of direct contact of liquid nitrogen with the material to be ground as described in the applications WO 2019/73172 A1 And JP 2021-041404 A ).
  • the invention makes it possible to set a limit speed at the periphery of the grinding and mixing mobiles 4a, 4b (that induced by cavitation phenomena) while applying a strictly anti-clockwise speed between these mobiles in order to obtain at the level of impacts between grinding balls speeds which can approach a value close to twice the peripheral speed of the end of the grinding and mixing mobiles and this without limitation due to cavitation.
  • the figure 1 illustrates an embodiment with a first mode of power transmission to the grinding and mixing mobiles 4a, 4b.
  • a drive system M enables the counter-rotating drive of the grinding and mixing mobiles 4a, 4b and a power transmission system 3 connects the grinding and mixing mobiles 4a, 4b to the drive system M.
  • the power transmission is done by bevel gear.
  • This type of transmission ensures strictly counterclockwise, counter-rotating rotation with a single motor, which is advantageous in terms of cost and investment.
  • the two grinding and mixing mobiles 4a, 4b are arranged such that the lowest mobile 4b is distant by a height h from the bottom of the tank 2 and the distance between the two mobiles 4a and 4b is noted h1. Furthermore, the references T and D respectively designate the diameter of the mobiles 4a, 4b and the diameter of the tank 2.
  • h is less than 2T, and h1 is between T and 5T.
  • h1 is between T and 5T.
  • FIGS. 8A, 8B and 8C illustrate an example of the implementation of a power transmission by bevel gear.
  • figure 2 illustrates a second mode of power transmission by epicyclic gear train.
  • Epicyclic gear trains do not conventionally allow for the reproduction of counterclockwise rotation with a strictly equivalent angular speed of the drive shaft. Indeed, an epicyclic gear train is often multiplicative, or even reducing, but does not strictly reproduce the rotational speed which drives it. In the present invention, a strictly opposite speed of the grinding and mixing mobiles 4a, 4b can be advantageously targeted since this optimizes the impact and friction force in the close vicinity of the common areas of the two mobiles, as described with reference to Figures 6A to 7B .
  • an epicyclic gear train it is preferable to have two, one providing a multiplicative function for the rotation speed of the motor shaft and the other a reduction function so that the combination of these two sub-assemblies ensures strict transmission of the rotation speed of the motor shaft, with a factor of 1 of overall restitution.
  • the second epicyclic gear train TE is described by the data in the following table 2: ⁇ i> ⁇ u>Table 2: Main dimensions of the second stage of the epicyclic gear train ⁇ /u> ⁇ /i> Number of teeth (Z) Diameter (d) in mm Planetary (21') 20 20 Satellite (22') 10 10 Crown (23') 60 60
  • the housing enclosing the train can be used advantageously to provide thermal insulation (plug) in the tank crown.
  • THE figures 9 and 10 are partial perspective views illustrating the epicyclic gear trains TE of the transmission system 3 of the grinding and mixing device 1 according to the invention.
  • the figure 9 is a cutaway view of the double epicyclic gear train and the figure 10 is a view from below of it for a transmission factor of 1 in the counterclockwise direction of rotation.
  • the gear transmission of the torque from the motor shaft is made to the sun gear 21 or 21'.
  • the gear transmission of the torque from the sun gear 21 or 21' is made to the satellites 22 or 22'.
  • the gear transmission from the satellites 22 or 22' is made to the crown 23 or 23'.
  • the 24 or 24' satellite carrier allows the 22 or 22' satellites to be secured.
  • the 25 or 25' landing gear cover provides protection to prevent access and forms a thermal barrier.
  • the M drive system consists of a drive shaft with a motor.
  • the motor is capable of generating a rotation speed of between 100 and 15,000 rpm at the drive shaft for a torque of between 0.1 and 10 Nm.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Claims (14)

  1. Vorrichtung zum kryogenen Mahlen und Mischen (1) von Pulvern (P), umfassend:
    - einen Mahlbehälter (2), der die Beladung mit in der flüssigen Phase zu mahlenden Pulvern (P) und Mahlmedien (Mb) umfasst, wobei der Mahlbehälter (2) ein kryogenes Fluid aufweist und wärmeisoliert ist,
    - mindestens ein erstes Mahl- und Mischmobil (4a) und ein zweites Mahl- und Mischmobil (4b), die innerhalb des Mahlbehälters (2) angeordnet sind,
    - ein Motorisierungssystem (M) zum Drehantrieb des mindestens einen ersten Mahl- und Mischmobils (4a) und einen zweiten Mahl- und Mischmobils (4b),
    - ein Kraftübertragungssystem (3), das das Motorisierungssystem (M) mit dem mindestens einen ersten Mahl- und Mischmobil (4a) und einen zweiten Mahl- und Mischmobil (4b) verbindet,
    dadurch gekennzeichnet, dass das mindestens eine erste Mahl- und Mischmobil (4a) und eine zweite Mahl- und Mischmobil (4b) gegenläufig drehend angetrieben und koaxial sind.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Mahlbehälter (2) flüssigen Stickstoff (N2) aufweist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Abstand (h1) zwischen dem mindestens einen ersten Mahl- und Mischmobil (4a) und dem mindestens einen zweiten Mahl- und Mischmobil (4b) kleiner ist als das Dreifache des kleinsten Durchmessers des mindestens einen ersten Mahl- und Mischmobils (4a) und einen zweiten Mahl- und Mischmobils (4b).
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine erste Mahl- und Mischmobil (4a) und eine zweite Mahl- und Mischmobil (4b) axial, radial und/oder hybrid ausgeführt sind.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Kraftübertragungssystem (3) ein Kraftübertragungssystem mit Kegelradgetriebe (EC) ist.
  6. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Kraftübertragungssystem (3) ein Kraftübertragungssystem mit Planetengetriebe (TE) ist.
  7. Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Abstand (h) zwischen dem Boden des Mahlbehälters (2) und dem dem Boden des Mahlbehälters (2) am nächsten gelegenen Mahl- und Mischmobil (4b) kleiner ist als das Doppelte des Durchmessers (T) des Mahl- und Mischmobils (4b), und dass der Abstand (h1) zwischen zwei übereinander liegenden Mahl- und Mischmobilen (4a, 4b) das Ein- bis Fünffache des Durchmessers (T) des Mahl- und Mischmobils (4b) beträgt.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass das Kraftübertragungssystem (3) mindestens zwei Planetengetriebe (TE) aufweist, insbesondere so viele Planetengetriebe (TE) wie Mahl- und Mischmobile (4a, 4b).
  9. Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass das oder die Planetengetriebe (TE) einen thermischen Deckel für das mindestens eine erste Mahl- und Mischmobil (4a) und eine zweite Mahl- und Mischmobil (4b) bilden.
  10. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mindestens eine erste Mahl- und Mischmobil (4a) und eine zweite Mahl- und Mischmobil (4b) chirale Mobile sind.
  11. Verfahren zum Mahlen und Mischen von Pulvern (P), dadurch gekennzeichnet, dass es mittels einer Vorrichtung nach einem der vorhergehenden Ansprüche eingesetzt wird.
  12. Verfahren zum Mahlen und Mischen nach Anspruch 11, dadurch gekennzeichnet, dass es mittels einer kryogenen Mahl- und Mischvorrichtung durchgeführt wird, bei der ein kryogenes Fluid im Mahlbehälter (2), insbesondere flüssiger Stickstoff, in direktem Kontakt mit den zu mahlenden Pulvern (P) verwendet wird.
  13. Verfahren zum Mahlen und Mischen nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass es den Schritt des gegenläufigen Drehens des mindestens einen ersten Mahl- und Mischmobils (4a) und einen zweiten Mahl- und Mischmobils (4b) aufweist.
  14. Verfahren zum Mahlen und Mischen nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass es den Schritt des Drehens des mindestens einen ersten Mahl- und Mischmobils (4a) und einen zweiten Mahl- und Mischmobils (4b) mit einer Geschwindigkeit zwischen 10 % und 150 % der Kavitationsgeschwindigkeit des im Mahlbehälter (2) verwendeten Fluids aufweist.
EP22839405.2A 2021-12-21 2022-12-05 Vorrichtung und verfahren zum mahlen und mischen von pulvern mit gegenläufigen mahl- und mischbewegungselementen Active EP4452503B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2114146A FR3130648A1 (fr) 2021-12-21 2021-12-21 Dispositif et procédé de broyage et de mélange de poudres comportant des mobiles de broyage et de mélange contrarotatifs
PCT/FR2022/052250 WO2023118678A1 (fr) 2021-12-21 2022-12-05 Dispositif et procédé de broyage et de mélange de poudres comportant des mobiles de broyage et de mélange contrarotatifs

Publications (3)

Publication Number Publication Date
EP4452503A1 EP4452503A1 (de) 2024-10-30
EP4452503B1 true EP4452503B1 (de) 2025-08-13
EP4452503C0 EP4452503C0 (de) 2025-08-13

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EP (1) EP4452503B1 (de)
FR (1) FR3130648A1 (de)
WO (1) WO2023118678A1 (de)

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Publication number Priority date Publication date Assignee Title
WO2011059074A1 (ja) * 2009-11-13 2011-05-19 森六ケミカルズ株式会社 微粉末の製造方法および同方法で製造された微粉末
FR3072308B1 (fr) 2017-10-12 2019-11-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif et procede de broyage cryogenique avec media de broyage sous forme de gaz cryogenique solidifie
CN108176465A (zh) * 2017-12-28 2018-06-19 郑州国知网络技术有限公司 一种园林用离心碰撞式树叶处理装置
CN112427097A (zh) * 2020-11-09 2021-03-02 南通立方新材料科技有限公司 一种卧式砂磨机的冷却机构
JP7097938B2 (ja) 2020-11-16 2022-07-08 森六ケミカルズ株式会社 湿式媒体粉砕方法
CN113019588B (zh) * 2021-03-05 2021-12-14 江南大学 一种用于纳米粉体制备的可调间隙锥型研磨装置

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WO2023118678A1 (fr) 2023-06-29
EP4452503A1 (de) 2024-10-30
EP4452503C0 (de) 2025-08-13
FR3130648A1 (fr) 2023-06-23

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