US3663206A - Treatment of molten material - Google Patents

Treatment of molten material Download PDF

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Publication number
US3663206A
US3663206A US879405A US3663206DA US3663206A US 3663206 A US3663206 A US 3663206A US 879405 A US879405 A US 879405A US 3663206D A US3663206D A US 3663206DA US 3663206 A US3663206 A US 3663206A
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United States
Prior art keywords
nozzle
nozzles
liquid stream
arrangement
stream
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Expired - Lifetime
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US879405A
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English (en)
Inventor
Hope Lubanska
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.)
BRITISH IRON AND STEEL ASS
BRITISH IRON AND STEEL ASSOCIATION
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BRITISH IRON AND STEEL ASS
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    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • 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
    • G21C3/02—Fuel elements
    • G21C3/04—Constructional details
    • G21C3/16—Details of the construction within the casing
    • G21C3/20—Details of the construction within the casing with coating on fuel or on inside of casing; with non-active interlayer between casing and active material with multiple casings or multiple active layers
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/088—Fluid nozzles, e.g. angle, distance
    • 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

Definitions

  • 264/ l 2 A method of shattering a freely falling liquid stream by means of downwardly directed jets which strike the stream at a com- References Cited mon impact zone.
  • the jets issue from two or more nozzle systems, the flow from one system striking the stream at an UNITED STATES PATENTS angle different from that at which the flow from at least one 3,340,334 9/1967 Keldmann et al ..264/12 other system strikes.
  • Each nozzle system comprises one or 2,957,351 1/196l Roberts e!
  • 31 X more nozzles and the nozzle or nozzles of one system may be 3,450,503 6969 f X located at a level different from that at which the nozzle or 2,9 l Hllty X nozzles or another ystem are located 2,969,282 1/1961 Churcher ..75/60 3,325,277 6/1967 Huseby ..75/O.5 28 Claims, 6 Drawing Figures III will TREATMENT OF MOLTEN MATERIAL This invention is concerned with improvements in and relating to the shattering of streams of liquid material by means of fluid jets.
  • the invention is applicable to the treatment of molten metallic material with gases, for example, in the spray treatment of a freely falling stream of molten metallic material by the action of a reacting gas generally in the manner described in United Kingdom Pat. No. 949,610.
  • the invention may also be applied to the formation of droplets in the production of powder.
  • a method of shattering a freely falling liquid stream which comprises causing downwardly directed jets of fluid from two nozzle systems to impact upon the liquid stream in a common impact zone, the arrangement being such that the angle to the vertical at which the flow from one nozzle system strikes the stream is different from that at which the flow from the other system strikes and that the vector sum, in a horizontal plane passing through the impact zone, of the forces applied to the stream by the flow from each system is substantially zero. It has been found that such procedure can be employed not only to achieve a desired degree of shattering of the liquid stream but also to impose a directional control upon the droplets produced.
  • a method of shattering a freely falling liquid stream which comprises causing downwardly directed jets of fluid from two nozzle systems situated at different levels to impact upon the stream in a common impact zone, the arrangement being such that the angle to the vertical at which the flow from one nozzle system strikes the stream is different from that at which the flow from the other system strikes.
  • FIG. 1 is a vertical cross-section taken through part of the nozzle configuration of apparatus for carrying out the invention
  • FIG. 2 is a plan view illustrating a form of nozzle installation alternative to that shown in FIG. 1;
  • FIG. 3 is a sectional elevation taken on line III--III of FIG. 2;
  • FIG. 4 is a vertical cross-section taken through part of an alternative nozzle configuration
  • FIGS. 5 and 6 are plan views illustrating further forms of nozzle installation.
  • a stream of molten material 1 (for example, molten metallic material) flowing from the outlet 2 of a tundish 3 falls through the central apertures of a pair of nozzle rings 4 and 5 of the same pitch circle diameter.
  • the rings 4 and 5 are located on different levels; that is to say, the medians of the exit planes of the nozzles of the ring 4 lie on a horizontal plane spaced above the horizontal plane which contains the medians of the exit planes of the nozzles of the ring 5.
  • the upper ring 4 comprises a water-cooling passage 6, a gas manifold 7 and a nozzle system comprising four equally spaced nozzles 8 (of which only two are shown), each communicating with the manifold; the lower ring 5 is similarly constructed, the cooling passage, gas manifold and nozzles being indicated by the reference numerals, 9, l and 11 respective-
  • the nozzles in both rings are of the convergent/divergent type and the throats are of similar cross-section.
  • each nozzle 8 is shown disposed vertically above one of the nozzles 11, the rings 4 and may alternatively be so related in azimuth that each nozzle 8 is situated vertically above a portion of the ring 5 mid-way between a pair of the nozzles 11 in order to avoid interference between the boundaries of the jets of the two nozzle systems.
  • the center lines of the nozzles 8 are each downwardly inclined at a common angle to the vertical and the center lines of the noules 11 are each inclined at a greater angle to the vertical such that the two sets of center lines are aimed at a common point on the vertical axis which passes through the center of the tundish outlet.
  • the four gas jets issuing from the nozzles 8 will impinge upon the surface of the molten material stream at a smaller mean angle to the vertical than will the four jets issuing from the nozzles 11; furthermore, if all eight jets leave the respective nozzles with equal velocity, those issuing from the nozzles 8 will strike the stream with less force than do those issuing from the nozzles 11, due to the greater slant distance travelled by the former jets.
  • Movement of particles in a direction other than downwardly can lead to their undesired contact with parts of the apparatus situated at levels higher than the impact zone and may result in damage to, for example, the equipment for admission of the gas and molten metal; it has been found that, whilst providing satisfactory shattering of the stream, arrangements in accordance with the invention tend to prevent or minimize movement of particles in an upward direction away from the impact zone.
  • Factors other than difference in slant distance may be employed to achieve a desired relationship between the force with which the jets from the different nozzle systems strike the stream.
  • the jets may leave the respective nozzles with different momenta, the throat sizes of nozzles of each nozzle system being different and/or different pressures prevailing upstream of the nozzle exits; in the latter connection, there is shown in FIG. 1 valve means 12, adjustment of which will result in differential control of the flows to the manifolds 7 and 10 respectively.
  • valve means 12 adjustment of which will result in differential control of the flows to the manifolds 7 and 10 respectively. It will be desirable, in general, to arrange that the pressures obtaining upstream of the nozzles are sufficient, at least in the case of the nozzles 11, to ensure that the jets produced have supersonic cores which persist an appropriate distance toward the impact zone.
  • the arrangement illustrated in FIG. 1 comprises two rings each having four nozzles
  • the arrangement may be so modified that either ring comprises some other number of nozzles; for example, the upper ring may comprise a single annular nozzle and the lower ring an array of three symmetrically arranged nozzles.
  • the upper ring may be of smaller pitch circle diameter than the lower ring; also, the upper ring may be seated upon the lower ring in such a manner that no space exists between the two.
  • more than two nozzle systems may be employed.
  • a single nozzle ring is used and comprises two nozzle systems 13 and 14 in communication with gas manifolds l5 and 16 respectively, the medians of the exit planes of the nozzles of each system being located in the same horizontal plane.
  • the four nozzles of each system 13, 14 are located symmetrically in a circular array about the vertical axis passing through the center of the tundish nozzle, the arrangement being such that if the velocities of the jets leaving each nozzle system are equal then the vector sum, in a horizontal plane passing through the impact zone, of the forces applied to the stream by the flow from each system is substantially zero.
  • the eight nozzles are symmetrically arranged in a pattern such that the nozzles 13 are situated on a pitch circle diameter smaller than that on which the nozzles 14 are arranged.
  • the eight nozzles are of equal throat diameter but, as will be seen from FIG. 3, the center lines of the nozzles 13 are inclined at a smaller angle to the vertical than are the center lines of the nozzles 14, the angles being so chosen that the eight center lines meet at a common point on the vertical axis passing through the center of the ring.
  • the pressures obtaining upstream of the nozzles 13, 14 are so controlled that the force with which the jets issuing from nozzles 13 strike the molten stream is not greater than the force with which the jets issuing from nozzles 14 strike the stream.
  • each system of nozzles may comprise any desired number of nozzles and that the number of nozzles in one system may differ from that of the other system; also, it will be desirable to provide that jet velocity at issuance from the nozzles 14 is such that supersonic conditions persist an appropriate distance toward the impact zone.
  • more than two nozzle systems may be employed in modifications of any of the embodiments described.
  • a sheet-like stream of molten material 18 flows from an outlet nozzle 19 of a tundish which, in a horizontal plane, has in a direction perpendicular to the plane of the paper a dimension several times larger than the dimension in a direction at right angles to the firstmentioned direction and to the vertical plane passing through the median line of the tundish nozzle.
  • the stream 18 falls between two nozzle assemblies 20, 21 each of which comprises a pair of cooled superposed, nozzles 22, 23 which are arranged to discharge fluid jets which each extend across substantially the full width of the sheet-like material stream.
  • the upper nozzles 22 are equi-spaced from the vertical plane passing through the median line of the tundish nozzle and the center line of each nozzle is downwardly inclined at the same angle to the vertical.
  • the lower nozzles 23, which are spaced further apart than the nozzles 22, are similarly arranged, being equi-spaced from the previously mentioned vertical plane, but being downwardly inclined at a different common angle to the vertical.
  • the nozzles 22 constitute one nozzle system and the nozzles 23 constitute another nozzle system, the arrangement being such that if the velocities of the jets leaving each system are equal, then the vector sums, in a horizontal plane passing through the impact zone, of the forces applied to the stream by the two jets issuing from the nozzles 22 and by the two jets issuing from the nozzles 23 respectively, are each substantially zero.
  • the jets issuing from the nozzles 22 will impinge on the surface of the stream at a smaller mean angle to the vertical then will the jets issuing from the nozzles 23; furthermore, if all four jets leave the respective nozzles with equal velocity, those issuing from the nozzles 22 will strike the stream with less force than do those issuing from the nozzles 23, due to the greater slant distance travelled by the former jets.
  • each nozzle assembly 20, 21 may comprise two rows of discrete equi-spaced nozzles, the median points at the exit planes of the nozzles of each row lying on a line extending parallel to the horizontal median line of the liquid stream.
  • the nozzle rows of each nozzle assembly may be so related that each individual nozzle of the upper row is situated above a space intermediate adjacent nozzles of the lower row.
  • the apparatus comprises a single nozzle assembly including four rows of discrete nozzles, the two inner rows 24 defining one nozzle system and the two outer rows 25 defining a second nozzle system.
  • the exit planes of the nozzles of each system are located in the same horizontal plane and the medians of the exit planes lie on lines which extend parallel to the longitudinal extent of an elongate tundish nozzle 26.
  • the nozzles of each inner row 24 interdigitate the nozzles of the adjacent outer row 25.
  • the arrangement is such that each of the vector sums, in a horizontal plane passing through the impact zone, of the forces applied by the flow from a nozzle system to the sheet-like liquid stream falling from the tundish nozzle is substantially zero.
  • the nozzle rows 24, 25 are replaced by slot-shaped nozzles each extending substantially co-extensively with the longitudinal extent of the tundish nozzle.
  • the apparatus comprises a nozzle assembly including only two elongate slotshaped nozzles 28 and 29, each nozzle constituting a nozzle system.
  • the medians of the exit planes of the nozzles 28, 29 are located in the same horizontal plane and the median line of each nozzle extends parallel to the longitudinal extent of an elongate tundish nozzle 30.
  • the jet issuing from the nozzle 28 will impinge on a surface of the liquid stream at a smaller mean angle to the vertical than will the jet issuing from the nozzle 29.
  • the nozzles 28, 29 may be replaced by rows of mutually separated nozzles 31, 32 respectively, as shown in broken line in FIG. 6.
  • the nozzle 29 or the nozzles 32 may be located on a level different from that on which nozzle 28 or the nozzles 31 respectively is located; in such a modification, the assembly would be similar to either the nozzle assembly 20 or 21 illustrated in FIG. 4.
  • FIGS. 4, 5 and 6 comprise two nozzle systems, it is to be appreciated that either arrangement may be so modified that it comprises more than two nozzle systems.
  • the fluid for shattering the material stream may be a liquid.
  • the nozzles from which the jets issue would be of the convergent or parallel bore type as distinct from the convergent/divergent nozzles illustrated in the drawings.
  • a method of minimizing the the upward movement of particles when shattering a freely falling liquid stream which method comprises the steps of causing downwardly directed jets of fluid from two nozzle systems to impact upon the liquid stream in a common impact zone, the arrangement being such that the angle to the vertical at which the flow from one nozzle system strikes the stream is less than that at which the flow from the other system strikes the stream, that the force with which the flow from the said one noule system strikes the stream is not greater than the force with which the flow from the said other nozzle system strikes the stream and that the vector sums, of the forces applied to the stream by the flows from each system in a horizontal plane passing through the impact zone are each substantially zero.
  • one nozzle system comprises a plurality of nozzles symmetrically arranged in a circular array about the vertical axis of the freely falling liquid stream.
  • each nozzle system comprises a plurality of nozzles symmetrically arranged in a circular array about the vertical axis of the freely falling liquid stream.
  • a method according to claim 1 wherein the liquid stream has in a first direction in a horizontal plane a dimension several times larger than the dimension in a second direction at right angles to the first direction and wherein the arrangement is such that each nozzle system produces a flow which extends across the two sides of major dimension of the liquid stream.
  • each system comprises two rows of mutually spaced noules, each row positioned opposite a side of major dimension of the path of the liquid stream, the medians of the exit planes of the nozzles of each row lying on lines extending parallel to the longitudinally extending horizontal median line of the liquid stream.
  • each nozzle system comprises two coherent jets each extending across substantially the width of a side of major dimension of the liquid stream.
  • a method according to claim 10 wherein the fluid is an oxidizing gas.
  • a method of shattering a freely falling liquid stream which comprises causing downwardly directed jets of fluid from two nozzle systems situated at different levels to impact upon the stream in a common impact zone, the arrangement being such that the angle to the vertical at which the flow from one nozzle system strikes the stream is less than that at which the flow from the other system strikes and that the force with which the flow from said one nozzle system strikes the stream is not greater than the force with which the flow from the said other nozzle system strikes the stream.
  • each nozzle system comprises a plurality of nozzles symmetrically arranged in a circular array about the vertical axis of the liquid stream, the diameter of the circle passing axis of the liquid stream, the diameter of the circle passing through the median of the exit plane of the or each nozzle of one system being equal to the diameter of the circle passing through the median of the exit plane of the or each nozzle of the other system.
  • each nozzle system comprises a plurality of nozzles symmetrically arranged in a circular array about the vertical axis of the liquid stream, the diameter of the circle passing through the median of the exit plane of the or each nozzle of one system being different from the diameter of the circle passing through the median of the exit plane of the or each noule of the other system.
  • a method according to claim 18 wherein the arrangement is such that the nozzles of each array of the two systems are so orientated that each nozzle of the upper array is situated vertically above a line passing between adjacent nonles of the lower array.
  • each nozzle system comprises two coherent jets each extending across substantially the width of a side of major dimension of the liquid stream.
  • each system comprises two rows or mutually spaced nozzles, each row positioned opposite a side of major dimension of the path of the liquid stream, the medians of the exit planes of the nozzles of each row lying on lines extending parallel to the longitudinally extending horizontal median line of the liquid stream.
  • a method according to claim 22 wherein the flow produced by each noule system comprises a coherent jet extending across substantially the width of a side of major dimension of the liquid stream, the flow from each system being caused to impact upon the same side of the liquid stream.
  • each system comprises a row of mutually spaced nozzles, the nozzles of each row lying opposite a common side of major dimension of the path of the liquid stream and extending parallel to the longitudinally extending horizontal median of the liquid stream.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Disintegrating Or Milling (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Continuous Casting (AREA)
  • Nozzles (AREA)
US879405A 1968-11-27 1969-11-24 Treatment of molten material Expired - Lifetime US3663206A (en)

Applications Claiming Priority (1)

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GB5625068 1968-11-27

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US (1) US3663206A (ru)
JP (1) JPS522842B1 (ru)
AT (1) AT322596B (ru)
BE (1) BE742261A (ru)
DE (1) DE1958610C3 (ru)
ES (1) ES373955A1 (ru)
FR (1) FR2024350A1 (ru)
GB (1) GB1272229A (ru)
LU (1) LU59880A1 (ru)
SU (1) SU570324A3 (ru)

Cited By (25)

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US3725517A (en) * 1971-11-26 1973-04-03 Whittaker Corp Powder production by gas atomization of liquid metal
US3826598A (en) * 1971-11-26 1974-07-30 Nuclear Metals Inc Rotating gas jet apparatus for atomization of metal stream
US4272463A (en) * 1974-12-18 1981-06-09 The International Nickel Co., Inc. Process for producing metal powder
US4472329A (en) * 1981-11-12 1984-09-18 Bayer Aktiengesellschaft Process for production of synthetic fibers
US4485834A (en) * 1981-12-04 1984-12-04 Grant Nicholas J Atomization die and method for atomizing molten material
US4619845A (en) * 1985-02-22 1986-10-28 The United States Of America As Represented By The Secretary Of The Navy Method for generating fine sprays of molten metal for spray coating and powder making
US4793853A (en) * 1988-02-09 1988-12-27 Kale Sadashiv S Apparatus and method for forming metal powders
WO1989005870A1 (en) * 1987-12-14 1989-06-29 Osprey Metals Limited Spray deposition
US5196049A (en) * 1988-06-06 1993-03-23 Osprey Metals Limited Atomizing apparatus and process
US5320509A (en) * 1991-10-01 1994-06-14 Hitachi Metals, Ltd. Molten metal-atomizing apparatus
US5656061A (en) * 1995-05-16 1997-08-12 General Electric Company Methods of close-coupled atomization of metals utilizing non-axisymmetric fluid flow
US5667749A (en) * 1995-08-02 1997-09-16 Kimberly-Clark Worldwide, Inc. Method for the production of fibers and materials having enhanced characteristics
US5711970A (en) * 1995-08-02 1998-01-27 Kimberly-Clark Worldwide, Inc. Apparatus for the production of fibers and materials having enhanced characteristics
US5811178A (en) * 1995-08-02 1998-09-22 Kimberly-Clark Worldwide, Inc. High bulk nonwoven sorbent with fiber density gradient
US5913329A (en) * 1995-12-15 1999-06-22 Kimberly-Clark Worldwide, Inc. High temperature, high speed rotary valve
US6334884B1 (en) * 1999-01-19 2002-01-01 Bohler Edelstahl Gmbh & Co Kg Process and device for producing metal powder
US6444009B1 (en) * 2001-04-12 2002-09-03 Nanotek Instruments, Inc. Method for producing environmentally stable reactive alloy powders
US6676726B1 (en) * 1998-12-25 2004-01-13 Nippon Steel Corporation Method and apparatus for manufacturing minute metallic sphere
US6773246B2 (en) * 1996-11-19 2004-08-10 Tsao Chi-Yuan A. Atomizing apparatus and process
CN100409980C (zh) * 2006-09-01 2008-08-13 鞍钢实业微细铝粉有限公司 双喷嘴雾化铝粉生产工艺
US20090145265A1 (en) * 2007-12-10 2009-06-11 Ajax Tocco Magnethermic Corporation System and method for producing shot from molten material
CN102000828A (zh) * 2010-09-26 2011-04-06 王昌祺 金属超微雾化粉碎分级系统及其金属雾化装置
US20160023277A1 (en) * 2013-09-24 2016-01-28 Iowa State University Research Foundation, Inc. Atomizer for improved ultra-fine powder production
US11298746B2 (en) * 2019-02-04 2022-04-12 Mitsubishi Power, Ltd. Metal powder producing apparatus and gas jet device for same
US11602789B2 (en) * 2017-12-07 2023-03-14 Mitsubishi Heavy Industries, Ltd. Metal-powder producing apparatus, and gas jet device and crucible container thereof

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US3692443A (en) * 1970-10-29 1972-09-19 United States Steel Corp Apparatus for atomizing molten metal
US4405296A (en) * 1981-09-08 1983-09-20 Teledyne Industries, Inc. Metallic particle generation device
DE3811077A1 (de) * 1988-03-29 1989-10-19 Mannesmann Ag Einrichtung fuer die zerstaeubung eines giessstrahles fluessigen metalls
DE3939178A1 (de) * 1989-11-27 1991-05-29 Branson Ultraschall Vorrichtung zum zerstaeuben von fluessigen und festen stoffen, vorzugsweise geschmolzenen metalls
GB2290730A (en) * 1994-06-28 1996-01-10 Redland Technology Ltd Coating by spraying
DE19629824C2 (de) * 1996-07-24 2003-06-05 Bayer Ag Vorrichtung zur Befeuchtung von Feststoffen in einer Fördereinrichtung
DE19711405A1 (de) * 1997-03-19 1998-09-24 Stiftung Inst Fuer Werkstoffte Vorrichtung zur Feinstzerstäubung von Metallschmelzen der Pulverproduktion und Sprühkompaktierung
WO1999011407A1 (fr) * 1997-08-29 1999-03-11 Pacific Metals Co., Ltd. Procede de production de poudre metallique par atomisation et son appareil
DE10001968B4 (de) * 1999-10-15 2004-02-12 Applikations- Und Technikzentrum Für Energieverfahrens-, Umwelt- Und Strömungstechnik (Atz-Evus) Verfahren zur Herstellung eines Pulvers
DE102013022096B4 (de) 2013-12-20 2020-10-29 Nanoval Gmbh & Co. Kg Vorrichtung und Verfahren zum tiegelfreien Schmelzen eines Materials und zum Zerstäuben des geschmolzenen Materials zum Herstellen von Pulver
CN104260741B (zh) * 2014-09-12 2016-08-17 中车青岛四方机车车辆股份有限公司 轨道车辆自动校正中心定位装置
CN108817410A (zh) * 2018-07-27 2018-11-16 昆明冶金研究院 一种用于制备超细金属粉体的气体雾化制粉装置
JP2020047642A (ja) 2018-09-14 2020-03-26 キオクシア株式会社 半導体記憶装置
DE102019214555A1 (de) 2019-09-24 2021-03-25 Ald Vacuum Technologies Gmbh Vorrichtung zur Verdüsung eines Schmelzstromes mittels eines Gases

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US3340334A (en) * 1963-11-28 1967-09-05 Knapsack Ag Process for atomizing molten material
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US3725517A (en) * 1971-11-26 1973-04-03 Whittaker Corp Powder production by gas atomization of liquid metal
US3826598A (en) * 1971-11-26 1974-07-30 Nuclear Metals Inc Rotating gas jet apparatus for atomization of metal stream
US4272463A (en) * 1974-12-18 1981-06-09 The International Nickel Co., Inc. Process for producing metal powder
US4472329A (en) * 1981-11-12 1984-09-18 Bayer Aktiengesellschaft Process for production of synthetic fibers
US4485834A (en) * 1981-12-04 1984-12-04 Grant Nicholas J Atomization die and method for atomizing molten material
US4619845A (en) * 1985-02-22 1986-10-28 The United States Of America As Represented By The Secretary Of The Navy Method for generating fine sprays of molten metal for spray coating and powder making
WO1989005870A1 (en) * 1987-12-14 1989-06-29 Osprey Metals Limited Spray deposition
US4793853A (en) * 1988-02-09 1988-12-27 Kale Sadashiv S Apparatus and method for forming metal powders
US5196049A (en) * 1988-06-06 1993-03-23 Osprey Metals Limited Atomizing apparatus and process
US5320509A (en) * 1991-10-01 1994-06-14 Hitachi Metals, Ltd. Molten metal-atomizing apparatus
US5656061A (en) * 1995-05-16 1997-08-12 General Electric Company Methods of close-coupled atomization of metals utilizing non-axisymmetric fluid flow
US5667749A (en) * 1995-08-02 1997-09-16 Kimberly-Clark Worldwide, Inc. Method for the production of fibers and materials having enhanced characteristics
US5711970A (en) * 1995-08-02 1998-01-27 Kimberly-Clark Worldwide, Inc. Apparatus for the production of fibers and materials having enhanced characteristics
US5807795A (en) * 1995-08-02 1998-09-15 Kimberly-Clark Worldwide, Inc. Method for producing fibers and materials having enhanced characteristics
US5811178A (en) * 1995-08-02 1998-09-22 Kimberly-Clark Worldwide, Inc. High bulk nonwoven sorbent with fiber density gradient
US5913329A (en) * 1995-12-15 1999-06-22 Kimberly-Clark Worldwide, Inc. High temperature, high speed rotary valve
US6773246B2 (en) * 1996-11-19 2004-08-10 Tsao Chi-Yuan A. Atomizing apparatus and process
US6676726B1 (en) * 1998-12-25 2004-01-13 Nippon Steel Corporation Method and apparatus for manufacturing minute metallic sphere
US20040035247A1 (en) * 1998-12-25 2004-02-26 Nippon Steel Corporation Method and apparatus for manufacturing minutes metalic sphere
US6334884B1 (en) * 1999-01-19 2002-01-01 Bohler Edelstahl Gmbh & Co Kg Process and device for producing metal powder
US20040031354A1 (en) * 1999-01-19 2004-02-19 Bohler Edelstahl Gmbh & Co. Kg Process and device for producing metal powder
US6632394B2 (en) 1999-01-19 2003-10-14 Bohler Edelstahl Gmbh & Co. Kg Process and device for producing metal powder
US7198657B2 (en) 1999-01-19 2007-04-03 Boehler Edelstahl Gmbh & Co. Kg Process and device for producing metal powder
US6444009B1 (en) * 2001-04-12 2002-09-03 Nanotek Instruments, Inc. Method for producing environmentally stable reactive alloy powders
CN100409980C (zh) * 2006-09-01 2008-08-13 鞍钢实业微细铝粉有限公司 双喷嘴雾化铝粉生产工艺
US7744808B2 (en) * 2007-12-10 2010-06-29 Ajax Tocco Magnethermic Corporation System and method for producing shot from molten material
US20090145265A1 (en) * 2007-12-10 2009-06-11 Ajax Tocco Magnethermic Corporation System and method for producing shot from molten material
CN102000828A (zh) * 2010-09-26 2011-04-06 王昌祺 金属超微雾化粉碎分级系统及其金属雾化装置
CN102000828B (zh) * 2010-09-26 2013-01-16 王昌祺 金属超微雾化粉碎分级系统及其金属雾化装置
US20160023277A1 (en) * 2013-09-24 2016-01-28 Iowa State University Research Foundation, Inc. Atomizer for improved ultra-fine powder production
US9981315B2 (en) * 2013-09-24 2018-05-29 Iowa State University Research Foundation, Inc. Atomizer for improved ultra-fine powder production
US10835959B2 (en) 2013-09-24 2020-11-17 Iowa State University Research Foundation, Inc. Atomizer for improved ultra-fine powder production
US11602789B2 (en) * 2017-12-07 2023-03-14 Mitsubishi Heavy Industries, Ltd. Metal-powder producing apparatus, and gas jet device and crucible container thereof
US11298746B2 (en) * 2019-02-04 2022-04-12 Mitsubishi Power, Ltd. Metal powder producing apparatus and gas jet device for same

Also Published As

Publication number Publication date
LU59880A1 (ru) 1970-01-26
DE1958610B2 (de) 1978-01-19
SU570324A3 (ru) 1977-08-25
AT322596B (de) 1975-05-26
FR2024350A1 (ru) 1970-08-28
BE742261A (ru) 1970-05-04
DE1958610C3 (de) 1978-09-21
GB1272229A (en) 1972-04-26
ES373955A1 (es) 1972-03-16
JPS522842B1 (ru) 1977-01-25
DE1958610A1 (de) 1970-06-11

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