EP1015117B1 - Microeddy mill and method for drying and deagglomerating powdery materials - Google Patents
Microeddy mill and method for drying and deagglomerating powdery materials Download PDFInfo
- Publication number
- EP1015117B1 EP1015117B1 EP98921494A EP98921494A EP1015117B1 EP 1015117 B1 EP1015117 B1 EP 1015117B1 EP 98921494 A EP98921494 A EP 98921494A EP 98921494 A EP98921494 A EP 98921494A EP 1015117 B1 EP1015117 B1 EP 1015117B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jet
- mill
- micro vortex
- vortex mill
- powdery material
- 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.)
- Expired - Lifetime
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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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/28—Passing gas through crushing or disintegrating zone gas moving means being integral with, or attached to, crushing or disintegrating element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C2013/145—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with fast rotating vanes generating vortexes effecting material on material impact
Definitions
- the present invention relates to a micro vortex mill for drying and Deagglomeration of powdered goods.
- Such mills are made, for example EP-A 226 900 is known. They are called "Ultra-Rotor” by the Altenburger Maschinen KG Jburgering & Co available in D-4700 Hamm.
- Such mills consist of a stator in the form of a cylindrical housing, in which is axially arranged a rotor, the several on a common drivable Axis has circular disks arranged one above the other, with the circular disks on their circumference a plurality of substantially radial and parallel to the rotor axis have arranged grinding plates that protrude beyond the circular disks, a small one Gap that is larger than the diameter of the particles of the ground material or the disagglomerating goods.
- a discharge device arranged, which can be designed in the form of a fan. Further can still rotating between the last circular disc and the discharge device Sighting rods can be provided, by means of which a separation and return of not yet sufficiently comminuted particles.
- the present invention relates to a microfluidic mill for drying and Deagglomeration of pulverulent material of the type described at the beginning with which Characteristic that the entry device for the goods in the form of a jet sucker is trained.
- Such conveyors are also known as jet pumps, see e.g. Chemical engineering 51 (1979), 867-877 and chemical engineering 54: 8-16 (1982). These consist of one in a serving as a suction space Housing arranged propellant nozzle, which generates a propellant jet. In the case the medium to be conveyed is introduced and carried away by the driving jet. Axially on the propulsion jet nozzle closes a mixing tube with a substantially constant cross section and a diffuser.
- the jet suction device preferably opens between the first and second Circular disc in the cylindrical space defined by the stator.
- the axis of the jet suction device can be arranged radially to the rotor axis. Prefers it is initiated tangentially using a jet suction device in the one defined by the stator Cylinder space.
- the propellant for the propellant jet can be Good air, nitrogen or another inert gas are preferred however, superheated steam is used, for example at a pressure between 2 and 4 bar.
- the material to be dried and deagglomerated is preferably in the form of a Slurry, particularly preferably used in the form of an aqueous slurry. It can the water content of the aqueous slurry is 50 to 80% by weight.
- the mass flow ratio of propellant jet and powder is preferably Material or slurry 0.20 to 0.5, particularly preferably 0.25 to 0.35.
- micro vortex mill With the micro vortex mill according to the invention, it is also possible to use thixotropic slurries such as dry organic and inorganic sludges, tough and sticky solids, etc. and to deagglomerate or grind.
- thixotropic slurries such as dry organic and inorganic sludges, tough and sticky solids, etc. and to deagglomerate or grind.
- the entry by means of a suction lamp takes place in a completely fluidized state, so that a load on the rotor or the grinding plates is significantly reduced. Power consumption peaks of the drive motor for the rotor when entering the goods according to the invention by means of jet suction no longer observed. This speaks for both the mill and that grinding smooth running of the rotor.
- inert gas As the propellant and hot gas medium, it is possible to be explosive Drying products in the micro vortex mill according to the invention and disagglomerate. Can also be suspended in organic medium Solids are dried after thickening and deagglomerated.
- the invention is explained in more detail with reference to the attached figure.
- the figure shows one Micro vortex mill 1 consisting of the cylindrical stator 2 and on the rotor axis 3 arranged circular disks 4 and grinding plates 5 fastened to the circular disks 4 consists.
- each of the circular disks 4 20 to 60 over the circumference have distributed grinding plates 5.
- the rotor axis 3 is by means of V-belts 6 from an electric motor with a speed of 2,000 to 3,000 rpm.
- the hot gas inlet 8 is above the first circular disk 4.1 the last circular disk 4,5 is the discharge element for the fluidized in the gas, dried and deagglomerated material, which is in the form of an impeller 9 is.
- a jet suction device 10 which comes from a propulsion jet nozzle 11, a suction nozzle 12 for the supply of the material to be dried and a Mixing tube 13 and a diffuser 14 is made.
- the particles fluidized, dried and deagglomerated in the carrier gas can be discharged from the micro vortex mill in a manner known per se in a cyclone separator are separated from the carrier gas.
- the control of the Temperature of the hot gas supplied at 8 is such that the temperature at Discharge 9 from the micro vortex mill above the dew point of the liquids, from which are dried, i.e. in the case of water above 110 ° C.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Gegenstand der vorliegenden Erfindung ist eine Mikrowirbelmühle zum Trocknen und Desagglomerieren von pulverförmigem Gut. Derartige Mühlen sind beispielsweise aus der EP-A 226 900 bekannt. Sie sind unter der Bezeichnung "Ultra-Rotor" von der Altenburger Maschinen KG Jäckering & Co in D-4700 Hamm lieferbar.The present invention relates to a micro vortex mill for drying and Deagglomeration of powdered goods. Such mills are made, for example EP-A 226 900 is known. They are called "Ultra-Rotor" by the Altenburger Maschinen KG Jäckering & Co available in D-4700 Hamm.
Derartige Mühlen bestehen aus einem Stator in Form eines zylindrischen Gehäuses, in dem axial ein Rotor angeordnet ist, der mehrere auf einer gemeinsamen antreibbaren Achse übereinander angeordnete Kreisscheiben aufweist, wobei die Kreisscheiben auf ihrem Umfang eine Vielzahl von im wesentlichen radial und parallel zur Rotorachse angeordnete Mahlplatten aufweisen, die die Kreisscheiben überragen, wobei ein kleiner Spalt, der größer ist als der Durchmesser der Partikel des Mahlgutes bzw. des zur desagglomerierenden Gutes. Unterhalb der ersten Kreisscheibe wird Heißgas in die Mikrowirbelmühle eingeleitet und oberhalb der letzten Kreisscheibe ist eine Austragsvorrichtung angeordnet, die in Form eines Ventilators ausgebildet sein kann. Ferner können zwischen der letzten Kreisscheibe und der Austragsvorrichtung noch rotierende Sichtungsstäbe vorgesehen sein, mittels derer eine Separation und Rückführung von noch nicht ausreichend zerkleinerten Teilchen erfolgt.Such mills consist of a stator in the form of a cylindrical housing, in which is axially arranged a rotor, the several on a common drivable Axis has circular disks arranged one above the other, with the circular disks on their circumference a plurality of substantially radial and parallel to the rotor axis have arranged grinding plates that protrude beyond the circular disks, a small one Gap that is larger than the diameter of the particles of the ground material or the disagglomerating goods. Below the first circular disk, hot gas is injected into the Micro vortex mill initiated and above the last circular disc is a discharge device arranged, which can be designed in the form of a fan. Further can still rotating between the last circular disc and the discharge device Sighting rods can be provided, by means of which a separation and return of not yet sufficiently comminuted particles.
Üblicherweise erfolgt die Einleitung des zu trocknenden bzw. zu desagglomerierenden oder zu mahlenden pulverförmigen Gutes mittels einer Eintragsschnecke durch den zylindrischen Stator in Höhe der ersten Kreisscheibe, d.h. der ersten Mahlstufe. Nachteilig bei dieser Eintragsart ist, daß der Rotor durch das einseitig eingetragene Gut asymmetrisch belastet wird, was durch unregelmäßige Stromaufnahmespitzen des Antriebsmotors für den Rotor feststellbar ist. Die asymmetrische Belastung der Mahlplatten führt zu erhöhtem Verschleiß der Mühle. Demgemäß wurde gemäß EP-A 226 900 bereits vorgeschlagen, das Gut unterhalb der ersten Mahlscheibe achsennah im Bereich der Heißgaszufuhr mittels einer Eintragsschnecke einzuleiten, wobei zwischen Heißgas- und Mahlgutzufuhr und der ersten Kreisscheibe zur Förderung des Mahlgutes ein Radialgebläse vorgesehen ist. Nachteilig auch bei diesem Vorschlag ist, daß das Mahlgut vor der Fluidisierung im Radialgebläse mit heißen Teilen der Mühle in Berührung kommt, wodurch Verkrustungen und Anbackungen hervorgerufen werden.Usually, what is to be dried or deagglomerated is introduced or powdered material to be ground by means of an entry screw through the cylindrical stator at the level of the first circular disc, i.e. the first grinding stage. The disadvantage of this type of entry is that the rotor is entered on one side Is loaded asymmetrically, which is caused by irregular current consumption peaks of the Drive motor for the rotor can be determined. The asymmetrical load on the Grinding plates lead to increased wear of the mill. Accordingly, according to EP-A 226 900 already suggested, the material below the first grinding disc near the axis initiate in the area of the hot gas supply by means of an entry screw, wherein between Hot gas and grist feed and the first circular disc to promote the A radial blower is provided. Another disadvantage of this proposal is that the regrind before fluidization in the radial fan with hot parts of the mill comes into contact, causing incrustations and caking.
Gegenstand der vorliegenden Erfindung ist eine Mikrowirbelmuhle zum Trocknen und Desagglomerieren von pulverförmigem Gut der eingangs geschilderten Art, mit dem Kennzeichen, daß die Eintragsvorrichtung für das Gut in Form eines Strahlsaugers ausgebildet ist. Derartige Förderorgane sind auch als Strahlpumpen bekannt, siehe z.B. Chemie-Ingenieur-Technik 51 (1979), 867-877 und Chemie-Ingenieur-Technik 54 (1982), 8-16. Diese bestehen aus einer in einem als Ansaugraum dienenden Gehäuse angeordneten Treibdüse, die einen Treibstrahl erzeugt. In das Gehäuse wird das zu fördernde Medium eingeleitet und von dem Treibstrahl mitgenommen. Axial an die Treibstrahldüse schließt sich ein Mischrohr mit im wesentlichen konstanten Querschnitt und ein Diffuser an.The present invention relates to a microfluidic mill for drying and Deagglomeration of pulverulent material of the type described at the beginning with which Characteristic that the entry device for the goods in the form of a jet sucker is trained. Such conveyors are also known as jet pumps, see e.g. Chemical engineering 51 (1979), 867-877 and chemical engineering 54: 8-16 (1982). These consist of one in a serving as a suction space Housing arranged propellant nozzle, which generates a propellant jet. In the case the medium to be conveyed is introduced and carried away by the driving jet. Axially on the propulsion jet nozzle closes a mixing tube with a substantially constant cross section and a diffuser.
Erfindungsgemäß bevorzugt mündet der Strahlsauger zwischen der ersten und zweiten Kreisscheibe in den zylindrischen Raum, der durch den Stator definiert ist. Die Achse des Strahlsaugers kann radial zur Rotorachse angeordnet sein. Bevorzugt erfolgt die Einleitung mittels Strahlsauger tangential in dem durch den Stator definierten Zylinderraum.According to the invention, the jet suction device preferably opens between the first and second Circular disc in the cylindrical space defined by the stator. The The axis of the jet suction device can be arranged radially to the rotor axis. Prefers it is initiated tangentially using a jet suction device in the one defined by the stator Cylinder space.
Als Treibmedium für den Treibstrahl kann je nach dem zu trocknenden und desagglomerierenden Gut Luft, Stickstoff oder ein anderes Inertgas eingesetzt werden, bevorzugt wird jedoch Heißdampf eingesetzt, beispielsweise bei einem Druck zwischen 2 und 4 bar.Depending on the one to be dried and deagglomerated, the propellant for the propellant jet can be Good air, nitrogen or another inert gas are preferred however, superheated steam is used, for example at a pressure between 2 and 4 bar.
Das zu trocknende und zu desagglomerierende Gut wird vorzugsweise in Form einer Slurry, insbesondere bevorzugt in Form einer wäßrigen Slurry eingesetzt. Dabei kann der Wassergehalt der wäßrigen Slurry 50 bis 80 Gew.-% betragen.The material to be dried and deagglomerated is preferably in the form of a Slurry, particularly preferably used in the form of an aqueous slurry. It can the water content of the aqueous slurry is 50 to 80% by weight.
Vorzugsweise beträgt das Massenstromverhältnis von Treibstrahl und pulverförmigen Material bzw. Slurry 0,20 bis 0,5, insbesondere bevorzugt 0,25 bis 0,35. The mass flow ratio of propellant jet and powder is preferably Material or slurry 0.20 to 0.5, particularly preferably 0.25 to 0.35.
Mit der erfindungsgemäßen Mikrowirbelmühle gelingt es, auch thixotrope Slurrys wie organische und anorganische Schlämme, zähe und klebrige Feststoffe, usw. zu trocknen und zu desagglomerieren bzw. auch zu mahlen. Der Eintrag mittels Saugstrahler erfolgt in vollständig fluidisiertem Zustand, so daß eine Belastung des Rotors bzw. der Mahlplatten erheblich reduziert wird. Stromaufnahmespitzen des Antriebsmotors für den Rotor werden bei dem erfindungsgemäßen Eintrag des Gutes mittels Strahlsauger nicht mehr beobachtet. Dies spricht für eine sowohl die Mühle als auch das zu mahlende Gut schonende Laufruhe des Rotors.With the micro vortex mill according to the invention, it is also possible to use thixotropic slurries such as dry organic and inorganic sludges, tough and sticky solids, etc. and to deagglomerate or grind. The entry by means of a suction lamp takes place in a completely fluidized state, so that a load on the rotor or the grinding plates is significantly reduced. Power consumption peaks of the drive motor for the rotor when entering the goods according to the invention by means of jet suction no longer observed. This speaks for both the mill and that grinding smooth running of the rotor.
Bei Einsatz von Inertgas als Treibmedium und Heißgasmedium ist es möglich, explosionsgefährliche Produkte in der erfindungsgemäßen Mikrowirbelmühle zu trocknen und zu desagglomerieren. Ferner können in organischem Medium suspendierte Feststoffe nach Eindickung getrocknet und desagglomeriert werden.When using inert gas as the propellant and hot gas medium, it is possible to be explosive Drying products in the micro vortex mill according to the invention and disagglomerate. Can also be suspended in organic medium Solids are dried after thickening and deagglomerated.
Die Erfindung wird anhand der beigefügten Figur näher erläutert. Die Figur zeigt eine
Mikrowirbelmühle 1, die aus dem zylindrischen Stator 2 und auf der Rotorachse 3
angeordneten Kreisscheiben 4 sowie an den Kreisscheiben 4 befestigten Mahlplatten 5
besteht. Beispielsweise kann jede der Kreisscheiben 4 20 bis 60 über den Umfang
verteilte Mahlplatten 5 aufweisen. Die Rotorachse 3 wird mittels Keilriemen 6 von
einem Elektromotor mit einer Drehzahl von 2.000 bis 3.000 U/min angetrieben.
Unterhalb der ersten Kreisscheibe 4.1 befindet sich der Heißgaseinlaß 8, oberhalb der
letzten Kreisscheibe 4,5 befindet sich das Austragsorgan für das in dem Gas fluidisierte,
getrocknete und desagglomerierte Gut, das in Form eines Gebläserades 9 ausgebildet
ist. Erfindungsgemäß erfolgt die Einleitung des zu trocknenden und desagglomerierenden
Gutes mittels eines Strahlsaugers 10, der aus einer Treibstrahldüse
11, einem Saugstutzen 12 für die Zuleitung des zu trocknenden Gutes sowie einem
Mischrohr 13 und einem Diffuser 14 besteht.The invention is explained in more detail with reference to the attached figure. The figure shows one
Micro vortex mill 1 consisting of the
Die in dem Trägergas fluidisierten, getrockneten und desagglomerierten Teilchen, die
aus der Mikrowirbelmühle ausgetragen werden, können in an sich bekannter Weise in
einem Zyklonabscheider von dem Trägergas abgetrennt werden. Die Steuerung der
Temperatur des bei 8 zugeführten Heißgases erfolgt derart, daß die Temperatur am
Austrag 9 aus der Mikrowirbelmühle oberhalb des Taupunktes der Flüssigkeiten, von
denen getrocknet wird, d.h. im Falle von Wasser oberhalb von 110°C, liegt.The particles fluidized, dried and deagglomerated in the carrier gas
can be discharged from the micro vortex mill in a manner known per se in
a cyclone separator are separated from the carrier gas. The control of the
Temperature of the hot gas supplied at 8 is such that the temperature at
Claims (9)
- Micro vortex mill (1) for drying and de-agglomerating powdery material, containing a rotor and a stator (2), wherein the rotor consists of a plurality of circular discs (4) which are disposed one above the other on a common driveable axis (3), to each of these circular discs a multiplicity of grinding plates (5) disposed substantially radially and parallel with the rotor axis (3) are attached, and the stator (2) consists of a cylindrical housing surrounding the grinding plates (5), wherein below the first circular disc (4.1) a hot gas inlet (8) is provided and above the last circular disc (4.5) a discharge device and also a feed device for the material to be dried and deagglomerated is provided, with the characterising feature that the feed device for the material is formed as a jet aspirator (10).
- Micro vortex mill as claimed in claim 1, wherein the jet aspirator (10) issues between the first (4.1) and second (4.2) circular disc into the cylindrical chamber which is defined by the stator.
- Micro vortex mill as claimed in claim 1 or 2, wherein the jet aspirator (10) issues with a tangential component into the cylindrical chamber.
- Micro vortex mill as claimed in one of claims 1 to 3, wherein a hot vapour source is provided to produce the propulsive jet of the jet aspirator (10).
- Process for drying and de-agglomerating powdery material, characterised in that a micro vortex mill as claimed in one of claims 1 to 4 is used.
- Process as claimed in claim 5, characterised in that the powdery material is introduced in the form of a slurry.
- Process as claimed in claim 6, characterised in that an aqueous slurry with a water content of 50 to 80% by weight is introduced.
- Process as claimed in one of claims 5 to 7, characterised in that the mass flow ratio of propulsive jet and powdery material or slurry is 0.20 to 0.5.
- Process as claimed in one of claims 5 to 8, characterised in that inorganic solids are introduced as the powdery material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19719840 | 1997-05-12 | ||
| DE19719840A DE19719840A1 (en) | 1997-05-12 | 1997-05-12 | Micro vortex mill and method for drying and deagglomerating powdery materials |
| PCT/EP1998/002512 WO1998051413A1 (en) | 1997-05-12 | 1998-04-29 | Microeddy mill and method for drying and deagglomerating powdery materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1015117A1 EP1015117A1 (en) | 2000-07-05 |
| EP1015117B1 true EP1015117B1 (en) | 2003-02-12 |
Family
ID=7829227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98921494A Expired - Lifetime EP1015117B1 (en) | 1997-05-12 | 1998-04-29 | Microeddy mill and method for drying and deagglomerating powdery materials |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1015117B1 (en) |
| DE (2) | DE19719840A1 (en) |
| WO (1) | WO1998051413A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9695047B2 (en) | 2013-03-11 | 2017-07-04 | Total Research & Technology Feluy | Process for producing fine, morphologically optimized particles using jet mill, jet mill for use in such a process and particles produced |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7445806B2 (en) | 2004-09-02 | 2008-11-04 | Kraft Foods Global Brands Llc | Process for selective grinding and recovery of dual-density foods |
| GB2482032B (en) | 2010-07-16 | 2013-04-10 | Kraft Foods R & D Inc | Coffee products and related processes |
| CN107262257B (en) * | 2017-07-15 | 2023-08-01 | 山西三元炭素有限责任公司 | Grinding mill |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3348779A (en) * | 1964-10-02 | 1967-10-24 | Norwood H Andrews | Method and apparatus for comminuting materials |
| US4504017A (en) * | 1983-06-08 | 1985-03-12 | Norandy, Incorporated | Apparatus for comminuting materials to extremely fine size using a circulating stream jet mill and a discrete but interconnected and interdependent rotating anvil-jet impact mill |
| DE3543370A1 (en) * | 1985-12-07 | 1987-06-11 | Jackering Altenburger Masch | MILL WITH SEVERAL GRINDINGS |
| DE3811910C2 (en) * | 1988-04-09 | 1997-04-10 | Mahltechnik Goergens Gmbh | Mill and method for grinding and drying a moist product simultaneously |
| DE29515434U1 (en) * | 1995-09-27 | 1995-11-23 | Mahltechnik Goergens Gmbh | Micro vortex mill |
| DE19611112C2 (en) * | 1996-03-21 | 2002-04-18 | Jackering Altenburger Masch | Method and device for producing extremely fine powders |
-
1997
- 1997-05-12 DE DE19719840A patent/DE19719840A1/en not_active Withdrawn
-
1998
- 1998-04-29 EP EP98921494A patent/EP1015117B1/en not_active Expired - Lifetime
- 1998-04-29 WO PCT/EP1998/002512 patent/WO1998051413A1/en active IP Right Grant
- 1998-04-29 DE DE59807202T patent/DE59807202D1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9695047B2 (en) | 2013-03-11 | 2017-07-04 | Total Research & Technology Feluy | Process for producing fine, morphologically optimized particles using jet mill, jet mill for use in such a process and particles produced |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59807202D1 (en) | 2003-03-20 |
| DE19719840A1 (en) | 1998-11-19 |
| EP1015117A1 (en) | 2000-07-05 |
| WO1998051413A1 (en) | 1998-11-19 |
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