DE1257748B - Device for forming spheres from granular material with a high melting point - Google Patents
Device for forming spheres from granular material with a high melting pointInfo
- Publication number
- DE1257748B DE1257748B DEE25696A DEE0025696A DE1257748B DE 1257748 B DE1257748 B DE 1257748B DE E25696 A DEE25696 A DE E25696A DE E0025696 A DEE0025696 A DE E0025696A DE 1257748 B DE1257748 B DE 1257748B
- Authority
- DE
- Germany
- Prior art keywords
- ring
- outlet
- particles
- working gas
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/06—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a liquid medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/42—Selection of substances for use as reactor fuel
- G21C3/58—Solid reactor fuel Pellets made of fissile material
- G21C3/62—Ceramic fuel
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Ceramic Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Particle Accelerators (AREA)
- Plasma Technology (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Description
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
AUSLEGESCHRIFTEDITORIAL
Int. Cl.: Int. Cl .:
BOIjBOIj
Deutsche KL: 12 g-1/01 German KL: 12 g -1/01
Nummer: 1257748Number: 1257748
Aktenzeichen: E 25696IV a/12 gFile number: E 25696IV a / 12 g
Anmeldetag: 17. Oktober 1963 Filing date: October 17, 1963
Auslegetag: 4. Januar 1968Open date: January 4, 1968
Die Erfindung betrifft eine Vorrichtung zum Bilden von Kügelchen aus körnigem Material mit hohem Schmelzpunkt, bestehend aus einem mit einer Zufuhrleitung für Arbeitsgas verbundenen Arbeitsgasraum, einer Ionisierungsanordnung mit einer Anode und einer Kathode, einer mit dem Arbeitsgasraum verbundenen Zufuhrleitung für das körnige Material und einer Öffnung im Arbeitsgasraum für den Auslaß der Kügelchen.The invention relates to an apparatus for forming beads of granular material with high Melting point, consisting of a working gas space connected to a supply line for working gas, an ionization arrangement with an anode and a cathode, one with the working gas space connected supply line for the granular material and an opening in the working gas space for the outlet the globules.
Mit derartigen Vorrichtungen, bei denen das Plasma sich normalerweise radial um eine Elektrode ausbildet, ist es bisher kaum möglich gewesen, in zufriedenstellender Weise Kügelchen mit einem Durchmesser von mehr als 200 μπα herzustellen.With such devices in which the plasma normally moves radially around an electrode forms, it has hitherto hardly been possible to satisfactorily produce beads with a diameter of more than 200 μπα to produce.
Aufgabe der Erfindung ist es daher, eine Vorrichtung der eingangs erwähnten Art anzugeben, mit der es möglich ist, Kügelchen mit hohem Schmelzpunkt bis zur Größe von 700 μΐη herzustellen.The object of the invention is therefore to provide a device of the type mentioned at the outset, with which makes it possible to produce beads with a high melting point up to a size of 700 μm.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Vorrichtung einen Schmelzraum enthält, der folgende Teile aufweist:This object is achieved according to the invention in that the device contains a melting chamber, which has the following parts:
an seiner Oberseite eine Materialzufuhrleitung, eine diese umgebende Arbeitsgaszuführleitung, einen Ring, der die Auslässe der Leitungen ummantelt, und eine erste ringförmige Elektrode, die den Ring umgibt, wobei der Ring über die erste Elektrode in Bewegungsrichtung der Teilchen hinausragt, aus einem elektrisch leitenden Material besteht und elektrisch leitend mit der ringförmigen Elektrode verbunden ist, ferner an seiner Unterseite einen Austritt aus dem Schmelzraum, dessen Mittelachse die Verlängerung der Mittelachse des Ringes bildet und der Bestandteil der Ionisierungsanordnung ist,on its upper side a material supply line, a working gas supply line surrounding it, a ring encasing the outlets of the lines and a first ring-shaped electrode, which surrounds the ring, the ring over the first electrode in the direction of movement of the particles protrudes, consists of an electrically conductive material and is electrically conductive with the annular electrode is connected, also an outlet from the underside Melting chamber, the central axis of which forms the extension of the central axis of the ring and is part of the ionization arrangement,
und daß sich an den Schmelzraum ein Kühlraum für die Kügelchen anschließt.and that a cooling space for the beads is connected to the melting space.
Durch diese Anordnung wird erreicht, daß die Teilchen sich während einer relativ langen Zeit im Bereich der höchsten Temperatur befinden, d. h. im wesentlichen auf der Mittelachse des Plasmas, das bei der Vorrichtung nach der Erfindung eine geeignete zylindrische Konfiguration besitzt.This arrangement ensures that the particles are in the for a relatively long time The area of the highest temperature, d. H. essentially on the central axis of the plasma that in the device of the invention has a suitable cylindrical configuration.
Zwischen dem Ring, der eine Verlängerung der ersten Elektrode bildet und mit dieser elektrisch leitend verbunden ist, und dem Austritt aus dem Schmelzraum bildet sich eine zylindrische Plasmasäule aus, in die die umzuformenden Teilchen axial eingebracht werden und in der sie während ihrer Fortbewegung gehalten werden. Danach treten die Teilchen in einen Kühlraum ein. Das Plasma ist leicht regelbar. Mit den herkömmlichen Vorrichtungen warBetween the ring, which forms an extension of the first electrode, and electrically with it Is conductively connected, and the exit from the melting chamber forms a cylindrical plasma column from, in which the particles to be formed are introduced axially and in which they during their Movement are kept. The particles then enter a cold room. The plasma is light adjustable. With the conventional devices was
Vorrichtung zum Bilden von Kügelchen aus
körnigem Material mit hohem SchmelzpunktApparatus for forming beads from
granular material with a high melting point
Anmelder:Applicant:
Europäische Atomgemeinschaft (EURATOM),European Atomic Energy Community (EURATOM),
BrüsselBrussels
Vertreter:Representative:
Dipl.-Ing. R. Müller-BörnerDipl.-Ing. R. Müller-Borner
und Dipl.-Ing. H.-H. Wey, Patentanwälte,and Dipl.-Ing. H.-H. Wey, patent attorneys,
1000 Berlin-Dahlem, Podbielskiallee 681000 Berlin-Dahlem, Podbielskiallee 68
Als Erfinder benannt:Named as inventor:
Thomas A. J. Jaques,Thomas A. J. Jaques,
Radipole-Weymouth, Dorset;Radipole-Weymouth, Dorset;
Richard T. Smyth,Richard T. Smyth,
Winton, Bournemouth, Hampshire;Winton, Bournemouth, Hampshire;
Derek William Sturge,Derek William Sturge,
Dorchester, Dorset (Großbritannien)Dorchester, Dorset (Great Britain)
Beanspruchte Priorität:Claimed priority:
Großbritannien vom 26. Oktober 1962 (40 569)Great Britain October 26, 1962 (40 569)
es nicht möglich, die Teilchen längere Zeit in der heißesten Zone zu halten.it is not possible to keep the particles in the hottest zone for a long time.
Es ist vorteilhaft, die Vorrichtung so auszubilden, daß im Arbeitsraum unteratmosphärischer Druck herrscht.It is advantageous to design the device so that sub-atmospheric pressure in the working space prevails.
Zu einer weiteren Verbesserung der Eigenschaften der Vorrichtung nach der Erfindung trägt es bei, daß der Austritt aus dem Schmelzraum düsenförmig ausgebildet ist.To a further improvement of the properties of the device according to the invention it contributes that the outlet from the melting chamber is nozzle-shaped.
Für die Ausbildung der zweiten Elektrode sind zwei Ausführungsformen möglich, nämlich, daß der Austritt die zweite Elektrode bildet oder daß die zweite Elektrode exzentrisch zur ersten Elektrode außerhalb des Schmelzraumes angeordnet ist und der Austritt als Kollimator ausgebildet ist. Beide Möglichkeiten können je nach den geforderten Eigenschaften der Vorrichtung Vorteile mit sich bringen.For the formation of the second electrode, two embodiments are possible, namely that the Exit forms the second electrode or that the second electrode is eccentric to the first electrode is arranged outside the melting chamber and the outlet is designed as a collimator. Both options can bring advantages depending on the required properties of the device.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher erläutert. Es zeigtAn embodiment of the invention is shown in the drawings and will be described in more detail below explained. It shows
F i g. 1 einen Längsschnitt durch ein Ausführungsbeispiel einer Vorrichtung nach der Erfindung und F i g. 1 shows a longitudinal section through an embodiment of a device according to the invention and
709 717/579709 717/579
Claims (5)
und daß sich an den Schmelzraum ein Kühlraum (1) für die Kügelchen anschließt.Ionization arrangement is
and that a cooling chamber (1) for the beads is connected to the melting chamber.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB40569/62A GB1010263A (en) | 1962-10-26 | 1962-10-26 | Improvements in or relating to apparatus for making spherical particles of refractory materials |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1257748B true DE1257748B (en) | 1968-01-04 |
Family
ID=10415551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEE25696A Pending DE1257748B (en) | 1962-10-26 | 1963-10-17 | Device for forming spheres from granular material with a high melting point |
Country Status (8)
Country | Link |
---|---|
US (1) | US3290723A (en) |
AT (1) | AT256048B (en) |
BE (1) | BE639079A (en) |
CH (1) | CH410594A (en) |
DE (1) | DE1257748B (en) |
GB (1) | GB1010263A (en) |
LU (1) | LU44657A1 (en) |
NL (1) | NL299680A (en) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH458753A (en) * | 1965-06-25 | 1968-06-30 | Ciba Geigy | Process for the production of fine, non-pyrophoric metals of groups IVa, Va and VIa and the actinium series of the periodic table |
US3862834A (en) * | 1971-04-03 | 1975-01-28 | Krupp Gmbh | Method for producing steel |
JPS5418777B2 (en) * | 1974-02-14 | 1979-07-10 | ||
GB1529526A (en) * | 1976-08-27 | 1978-10-25 | Tetronics Res & Dev Co Ltd | Apparatus and procedure for reduction of metal oxides |
US4212837A (en) * | 1977-05-04 | 1980-07-15 | Tokyo Shibaura Electric Co., Ltd. | Method and apparatus for forming spherical particles of thermoplastic material |
US4289952A (en) * | 1979-12-12 | 1981-09-15 | Massachusetts Institute Of Technology | Process for controlling powder size with optical energy |
US4670640A (en) * | 1983-06-28 | 1987-06-02 | Tylko Jozef K | Plasma cutting system |
BE1009236A3 (en) * | 1995-03-17 | 1997-01-07 | B A Emiel Vanderstraeten B V | Process for the preparation of glass and raw materials for the conditioning for the glass production. |
AU2001232063A1 (en) | 2000-02-10 | 2001-08-20 | Tetronics Limited | Plasma arc reactor for the production of fine powders |
GB2365876A (en) * | 2000-08-15 | 2002-02-27 | Tetronics Ltd | Making nano-sized powder using a plasma arc reactor |
GB0004845D0 (en) | 2000-02-29 | 2000-04-19 | Tetronics Ltd | A method and apparatus for packaging ultra fine powders into containers |
CA2405743C (en) | 2000-04-10 | 2009-09-15 | Tetronics Limited | Twin plasma torch apparatus |
WO2008140785A1 (en) | 2005-04-19 | 2008-11-20 | Sdc Materials, Inc. | Water cooling system and heat transfer system |
US8507401B1 (en) | 2007-10-15 | 2013-08-13 | SDCmaterials, Inc. | Method and system for forming plug and play metal catalysts |
US8803025B2 (en) * | 2009-12-15 | 2014-08-12 | SDCmaterials, Inc. | Non-plugging D.C. plasma gun |
US9126191B2 (en) | 2009-12-15 | 2015-09-08 | SDCmaterials, Inc. | Advanced catalysts for automotive applications |
US8652992B2 (en) | 2009-12-15 | 2014-02-18 | SDCmaterials, Inc. | Pinning and affixing nano-active material |
US8669202B2 (en) | 2011-02-23 | 2014-03-11 | SDCmaterials, Inc. | Wet chemical and plasma methods of forming stable PtPd catalysts |
US9156025B2 (en) | 2012-11-21 | 2015-10-13 | SDCmaterials, Inc. | Three-way catalytic converter using nanoparticles |
US9511352B2 (en) | 2012-11-21 | 2016-12-06 | SDCmaterials, Inc. | Three-way catalytic converter using nanoparticles |
US9586179B2 (en) | 2013-07-25 | 2017-03-07 | SDCmaterials, Inc. | Washcoats and coated substrates for catalytic converters and methods of making and using same |
JP2016535664A (en) | 2013-10-22 | 2016-11-17 | エスディーシーマテリアルズ, インコーポレイテッド | Lean NOx trap composition |
MX2016004991A (en) | 2013-10-22 | 2016-08-01 | Sdcmaterials Inc | Catalyst design for heavy-duty diesel combustion engines. |
CN106470752A (en) | 2014-03-21 | 2017-03-01 | Sdc材料公司 | For passive NOXThe compositionss of absorption (PNA) system |
ES2964898T3 (en) | 2015-12-16 | 2024-04-10 | 6K Inc | Spheroidal dehydrogenated metals and metal alloy particles |
US10987735B2 (en) | 2015-12-16 | 2021-04-27 | 6K Inc. | Spheroidal titanium metallic powders with custom microstructures |
WO2019246257A1 (en) | 2018-06-19 | 2019-12-26 | Amastan Technologies Inc. | Process for producing spheroidized powder from feedstock materials |
JP2022530649A (en) | 2019-04-30 | 2022-06-30 | シックスケー インコーポレイテッド | Lithium lanthanum zirconium oxide (LLZO) powder |
AU2020264446A1 (en) | 2019-04-30 | 2021-11-18 | 6K Inc. | Mechanically alloyed powder feedstock |
CA3153254A1 (en) | 2019-11-18 | 2021-06-17 | 6K Inc. | Unique feedstocks for spherical powders and methods of manufacturing |
GB2590083A (en) * | 2019-12-04 | 2021-06-23 | Ananda Shakti Tech Ltd | Plasma generator |
US11590568B2 (en) | 2019-12-19 | 2023-02-28 | 6K Inc. | Process for producing spheroidized powder from feedstock materials |
JP2023532457A (en) | 2020-06-25 | 2023-07-28 | シックスケー インコーポレイテッド | Fine composite alloy structure |
CA3186082A1 (en) | 2020-09-24 | 2022-03-31 | 6K Inc. | Systems, devices, and methods for starting plasma |
JP2023548325A (en) | 2020-10-30 | 2023-11-16 | シックスケー インコーポレイテッド | System and method for the synthesis of spheroidized metal powders |
CA3214233A1 (en) | 2021-03-31 | 2022-10-06 | Sunil Bhalchandra BADWE | Systems and methods for additive manufacturing of metal nitride ceramics |
US12040162B2 (en) | 2022-06-09 | 2024-07-16 | 6K Inc. | Plasma apparatus and methods for processing feed material utilizing an upstream swirl module and composite gas flows |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2736713A (en) * | 1952-09-02 | 1956-02-28 | Universal Oil Prod Co | Method of dispersing inorganic oxide sols |
US2676892A (en) * | 1953-11-13 | 1954-04-27 | Kanium Corp | Method for making unicellular spherulized clay particles and articles and composition thereof |
US2911669A (en) * | 1955-03-30 | 1959-11-10 | Parker Pen Co | Method and apparatus for forming spheres |
US3015852A (en) * | 1957-04-04 | 1962-01-09 | South African Iron & Steel | Process of spheroidizing irregularly shaped particles |
US3075066A (en) * | 1957-12-03 | 1963-01-22 | Union Carbide Corp | Article of manufacture and method of making same |
US3010009A (en) * | 1958-09-29 | 1961-11-21 | Plasmadyne Corp | Method and apparatus for uniting materials in a controlled medium |
US3151965A (en) * | 1961-01-27 | 1964-10-06 | Fort Pitt Bridge Works | Method and apparatus for producting glass beads |
US3183377A (en) * | 1961-05-03 | 1965-05-11 | Clark Controller Co | Electrical control circuits |
AT231020B (en) * | 1961-10-09 | 1964-01-10 | Oesterr Studien Atomenergie | Apparatus for the production of spherical particles |
BE638163A (en) * | 1962-10-05 |
-
0
- BE BE639079D patent/BE639079A/xx unknown
- NL NL299680D patent/NL299680A/xx unknown
-
1962
- 1962-10-26 GB GB40569/62A patent/GB1010263A/en not_active Expired
-
1963
- 1963-10-14 AT AT823763A patent/AT256048B/en active
- 1963-10-17 DE DEE25696A patent/DE1257748B/en active Pending
- 1963-10-19 LU LU44657D patent/LU44657A1/xx unknown
- 1963-10-21 CH CH1314463A patent/CH410594A/en unknown
- 1963-10-23 US US318246A patent/US3290723A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL299680A (en) | |
GB1010263A (en) | 1965-11-17 |
CH410594A (en) | 1966-03-31 |
BE639079A (en) | |
AT256048B (en) | 1967-08-10 |
LU44657A1 (en) | 1963-12-19 |
US3290723A (en) | 1966-12-13 |
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