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EP0073729A1 - Rührer zum Einrühren von Gas bei der Behandlung metallener Bäder - Google Patents

Rührer zum Einrühren von Gas bei der Behandlung metallener Bäder Download PDF

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Publication number
EP0073729A1
EP0073729A1 EP82420123A EP82420123A EP0073729A1 EP 0073729 A1 EP0073729 A1 EP 0073729A1 EP 82420123 A EP82420123 A EP 82420123A EP 82420123 A EP82420123 A EP 82420123A EP 0073729 A1 EP0073729 A1 EP 0073729A1
Authority
EP
European Patent Office
Prior art keywords
gas
bath
channels
passage
liquid
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.)
Granted
Application number
EP82420123A
Other languages
English (en)
French (fr)
Other versions
EP0073729B1 (de
Inventor
Jacques Gimond
Richard Gonda
Jean-Marie Hicter
Pierre Laty
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.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to AT82420123T priority Critical patent/ATE12311T1/de
Publication of EP0073729A1 publication Critical patent/EP0073729A1/de
Application granted granted Critical
Publication of EP0073729B1 publication Critical patent/EP0073729B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/111—Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/06—Obtaining aluminium refining
    • C22B21/066—Treatment of circulating aluminium, e.g. by filtration
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D27/00—Stirring devices for molten material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2331—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
    • B01F23/23314—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements through a hollow stirrer element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/233—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements
    • B01F23/2335—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer
    • B01F23/23352—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using driven stirrers with completely immersed stirring elements characterised by the direction of introduction of the gas relative to the stirrer the gas moving perpendicular to the axis of rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis

Definitions

  • the present invention relates to a rotary gas dispersion device for the treatment of a bath of liquid metal and, in particular, of aluminum and its alloys.
  • the first consists in passing the liquid metal through inert or active filtration media which retain the impurities either mechanically, chemically or by exerting the two effects;
  • the second way resorts to the use of inert or reactive gases or their mixtures, which are more or less intensely stirred with the liquid metal, in the presence or not of products such as fluxes.
  • gases are injected in the form of small discrete bubbles by means of a device consisting of a rotary shaft secured to a finned rotor, of a fixed sleeve surrounding said shaft and connected at its lower end to a stator with fins: shaft and sleeve are separated by an axial passage in which the gases are transported then introduced at the level of the fins where they are subdivided into small bubbles and brought into contact with the metal stirred by the rotor.
  • each gas bubble emitted can be small at the time of its formation, and give rise initially and locally to the formation of a fine dispersion, on the other hand, during its progress in the bath, it grows rapidly by coalescence with other bubbles and then forms a coarse dispersion.
  • the liquid-gas exchange is considerably reduced for the parts of the bath which have not been in contact with the gas at its point of emission, hence the random effectiveness of the treatment.
  • it is necessary to find a system in which each of the elementary volumes of the liquid constituting the whole of the bath to be treated, can form with the gas this desired fine dispersion in order to obtain optimum efficiency.
  • This rotary gas dispersing device for the treatment of a bath of liquid metal contained in a container comprises a cylinder-shaped rotor equipped with vanes plunging into the bath, connected to a hollow drive shaft serving to supply gas, and is characterized in that the rotor is pierced with pairs of channels, each couple comprising a channel which is used for the passage of the liquid and the other, for the passage of the gas, each of these couples opening separately at the same point of the lateral surface of the cylinder so that a fine dispersion of liquid-gas is formed there, which is then distributed in the bath by means of paddles.
  • the device according to the invention therefore comprises known elements, namely a cylinder-shaped rotor equipped on its side wall with pallets having any contour, placed symmetrically with respect to the axis of rotation and arranged either vertically or obliquely so as to form a helix with steps up or down.
  • This rotor is connected, in its center, and in the direction of its axis, to the lower part of a drive shaft whose upper end is connected, via a speed reducer, with a motor which gives it a rotational movement.
  • This shaft is hollow, so as to bring to the rotor a gas admitted at its upper end by means, for example, of a pipe provided with a rotating joint.
  • this shaft is composed of two different materials: one, for the part which plunges into the bath and which is generally graphite, the other, for the emerging part and which can be a corrosion-resistant metal alloy when the treatment gas contains chlorine for example.
  • This part of the shaft can be provided with cooling fins to avoid any excessive rise in temperature, which would adversely affect the performance of the equipment relating to the gas supply, and to the drive mechanism.
  • the particularity of the device lies in the presence, at the inside of the rotor, most often made of graphite, of pairs of gas circulation channels and metal circulation channels drilled in the mass and arranged in an original manner.
  • liquid metal circulation channels they generally have an oblique direction relative to the axis of the rotor and pass through the latter from side to side, originating either on its lower face or on its upper face, and opening onto the lateral face, at the precise place where the gas circulation pipes open. This direction is generally tilted between 10 and 60 degrees from the horizontal.
  • Their section, generally circular, is greater than that of the gas channels, and also varies according to the flow rate of metal which it is desired to treat, but a diameter of between 0.5 and 1.5 cm is perfectly suitable.
  • each gas channel is associated a liquid channel, from where a set of pairs of channels having a common point of emergence in the bath.
  • the liquid metal moves in the channels which are intended for it. This movement takes place from bottom to top or from top to bottom depending on whether the liquid channels arise on the lower or upper face of the rotor.
  • the flow rate obtained is a function of the speed of rotation of the rotor, the number of channels, their section, their inclination relative to the vertical, the difference in level between their ends and the distance between where they take birth and the center of the rotor.
  • the mixture thus produced appearing on the lateral surface of the rotor is distributed immediately by means of paddles throughout the bath where the exchange reactions continue, and before coalescence occurs, the magnification of the gas bubbles and their bursting at the bath surface.
  • the liquid flow rate Due to the numerous parameters which influence the liquid flow rate, it is always possible to adjust these to certain values so as to obtain a complete treatment of all the flow rate of the metal to be treated. Likewise, the gas flow rate can be adjusted to values commonly accepted for the treatment of a given quantity of metal. Thanks to these possibilities of adjusting the geometric parameters indicated above, it is possible to limit oneself to low rotational speeds, which has the advantage of simplifying the technology of the drive mechanism and thus improving the resistance in the material time.
  • Such a device according to the invention can be placed in any container whose content is to be treated, whether it is a ladle, a holding or processing oven operating continuously or not, whether or not it is equipped with intermediate partitions, whether it involves flows or not, whether the gases used are nitrogen, argon, chlorine, or their mixtures, or vapors of halogenated derivatives, or any other gaseous product capable of having a favorable action on the purification of the metal.
  • the flow to be treated the desired duration of the treatment, several devices can be used, whether they are placed on a single or several containers placed in series or in parallel.
  • FIG. 1 there is a hollow drive shaft (1) by which the gas (2) is brought to the level of the rotor (3) by means of a chamber (4) provided at its periphery with channels ( 5) which open at (6) at the precise location where the channels (7) which originated in this case on the underside of the rotor terminate and supplying the liquid so as to form the fine liquid-gas dispersion which is then dispersed in the bath by the paddles (8).
  • FIG 3 there is shown a ladle (9) closed by a cover (10), divided into an upstream compartment (11) and a downstream compartment (12) by a partition (13) supplied with liquid by the chute 'inlet (14) and drained by the outlet chute (15).
  • the liquid is subjected to the action of the device according to the invention, on which we can distinguish the rotor (3) provided with its channels (5) and (7) opening into the bath at (6) and pallets (8), connected via the chamber (4) to the hollow shaft composed of a graphite part (1), sleeved at its upper part on a metal shaft (16) equipped with cooling fins (17) driven by a reduction gear (18) controlled by a motor (19) and connected to a pipe (20) by means of a rotary joint (21) in order to be able to admit gas (2) from an external source.
  • the liquid enters the channels (7) in the directions (22), rises to (6) where it meets the gases admitted into the chamber (4) in the directions (23 ) which escape through the channels (5) to form a fine dispersion which is distributed in the bath by the pallets (8) in the direction (24).
  • the present invention is illustrated by the following application example: a pocket 60 cm in diameter and 1 m high has been fitted with a graphite rotor having a diameter of 20 cm and a height of 8 cm.
  • the rotor is provided with eight channels for the passage of metal with a diameter of 1 cm, with a length of 7 cm, inclined with respect to the vertical of 45 ° and with eight channels for the passage of gas, drilled horizontally, and with a diameter of 0.1 cm.
  • the alloy was very gaseous, and presented in the vacuum test under a pressure of 2 Torr, a hydrogen content of 0.85 cc / 100 g; at the outlet, by subjecting this alloy to the same test, there was only a content of 0.14 cc / 100 g and no appearance of bubbles, which shows the effectiveness of the treatment obtained by means of the claimed device.
  • the present invention finds its application whenever a good dispersion in two-phase liquid-gas mixtures is sought: this is the case in the treatment of liquid metals and, in particular, aluminum or its alloys with a view to '' remove hydrogen and non-metallic impurities.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treating Waste Gases (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Coating Apparatus (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Radiation-Therapy Devices (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Chemically Coating (AREA)
EP82420123A 1981-08-28 1982-08-25 Rührer zum Einrühren von Gas bei der Behandlung metallener Bäder Expired EP0073729B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82420123T ATE12311T1 (de) 1981-08-28 1982-08-25 Ruehrer zum einruehren von gas bei der behandlung metallener baeder.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8116735 1981-08-28
FR8116735A FR2512067B1 (fr) 1981-08-28 1981-08-28 Dispositif rotatif de dispersion de gaz pour le traitement d'un bain de metal liquide

Publications (2)

Publication Number Publication Date
EP0073729A1 true EP0073729A1 (de) 1983-03-09
EP0073729B1 EP0073729B1 (de) 1985-03-20

Family

ID=9261862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82420123A Expired EP0073729B1 (de) 1981-08-28 1982-08-25 Rührer zum Einrühren von Gas bei der Behandlung metallener Bäder

Country Status (28)

Country Link
US (1) US4426068A (de)
EP (1) EP0073729B1 (de)
JP (1) JPS6049700B2 (de)
KR (1) KR870000508B1 (de)
AT (1) ATE12311T1 (de)
AU (1) AU546831B2 (de)
BG (1) BG41825A3 (de)
BR (1) BR8205026A (de)
CA (1) CA1184381A (de)
CS (1) CS229943B2 (de)
DD (1) DD202453A5 (de)
DE (1) DE3262681D1 (de)
DK (1) DK158325C (de)
EG (1) EG15395A (de)
ES (1) ES8307914A1 (de)
FR (1) FR2512067B1 (de)
GR (1) GR77611B (de)
HK (1) HK27686A (de)
HU (1) HU186110B (de)
IE (1) IE53805B1 (de)
IN (1) IN156351B (de)
NO (1) NO160527C (de)
PL (1) PL131793B1 (de)
RO (1) RO85137B (de)
SU (1) SU1233807A3 (de)
TR (1) TR21856A (de)
YU (1) YU42045B (de)
ZA (1) ZA826254B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2562449A1 (fr) * 1984-04-06 1985-10-11 Servimetal Dispositif de traitement de l'acier, avant coulee continue, par injection de gaz
EP0183402A2 (de) * 1984-11-29 1986-06-04 Foseco International Limited Drehkörper, Vorrichtung und Verfahren zur Behandlung von Metallschmelzen
FR2604099A1 (fr) * 1986-09-22 1988-03-25 Pechiney Aluminium Dispositif rotatif a pels de mise en solution d'elements d'alliage et de dispersion de gaz dans un bain d'aluminium
WO1990001985A1 (de) * 1988-08-16 1990-03-08 Dieter Gabor Vorrichtung zur aufbereitung flüssiger bis dünnbreiiger medien
EP0365013A2 (de) * 1988-10-21 1990-04-25 Showa Aluminum Kabushiki Kaisha Vorrichtungzur Erzeugung und Verteilung von Blasen in einer Flüssigkeit
FR2645456A1 (fr) * 1989-04-11 1990-10-12 Air Liquide Procede et installation de traitement d'un liquide avec un gaz
EP0408165A1 (de) * 1989-07-10 1991-01-16 The Carborundum Company Gasverteilung in Metallschmelzen
FR2656001A1 (fr) * 1989-12-18 1991-06-21 Pechiney Recherche Procede et dispositif d'elaboration de produits composites a matrice metallique.
EP0665198A1 (de) * 1994-01-27 1995-08-02 Foseco International Limited Schlagfeste oxidationsbeständige Beschichtung für Graphitteile
WO1995021273A1 (en) * 1994-02-04 1995-08-10 Alcan International Limited Gas treatment of molten metals
WO1997011034A1 (en) * 1995-09-22 1997-03-27 Bernhard Van Dyk Submersible mixing impeller
US5660614A (en) * 1994-02-04 1997-08-26 Alcan International Limited Gas treatment of molten metals
WO1998005915A1 (fr) * 1996-08-02 1998-02-12 Pechiney Rhenalu Dispositif rotatif de dispersion de gaz pour le traitement d'un bain d'aluminium liquide
WO1999034024A1 (en) * 1997-12-24 1999-07-08 Alcan International Limited Injector for gas treatment of molten metals
CN111102850A (zh) * 2019-12-26 2020-05-05 河北工业职业技术学院 金属冶炼用自动匀料器

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO155447C (no) * 1984-01-25 1987-04-01 Ardal Og Sunndal Verk Anordning ved anlegg for behandling av en vaeske, f.eks. en aluminiumssmelte.
FR2568267B1 (fr) * 1984-07-27 1987-01-23 Pechiney Aluminium Poche de chloruration d'alliages d'aluminium destinee a eliminer le magnesium
JPS62205235A (ja) * 1986-03-05 1987-09-09 Showa Alum Corp 溶融金属の処理装置
JPH01271059A (ja) * 1988-04-21 1989-10-30 Honda Kinzoku Gijutsu Kk 金属連続溶解保持炉
CA1305609C (en) * 1988-06-14 1992-07-28 Peter D. Waite Treatment of molten light metals
GB2294209B (en) * 1991-09-26 1996-07-03 Charles Edward Eckert Method for treating a molten metal with a gas
US5160693A (en) * 1991-09-26 1992-11-03 Eckert Charles E Impeller for treating molten metals
JPH07122106B2 (ja) * 1991-12-02 1995-12-25 福岡アルミ工業株式会社 溶融軽金属の精製処理方法及び軽金属鋳塊または鋳物の製造方法
CA2097648C (en) * 1992-06-12 1998-04-28 Ronald E. Gilbert Molton metal pump with vaned impeller and flow directing pumping chamber
US5634770A (en) * 1992-06-12 1997-06-03 Metaullics Systems Co., L.P. Molten metal pump with vaned impeller
FR2702159B1 (fr) * 1993-03-05 1995-04-28 Raymond Berchotteau Appareil pour introduire et diffuser de l'air ou un gaz dans un liquide.
US5597289A (en) * 1995-03-07 1997-01-28 Thut; Bruno H. Dynamically balanced pump impeller
DE19539621C1 (de) * 1995-10-16 1997-06-05 Bayer Ag Begasungsrührer für Leichtmetallschmelzen
US6254340B1 (en) * 1997-04-23 2001-07-03 Metaullics Systems Co., L.P. Molten metal impeller
FR2763079B1 (fr) * 1997-05-07 1999-07-30 Graphitech Rotor et installation pour le traitement d'un bain de metal liquide
US6019576A (en) * 1997-09-22 2000-02-01 Thut; Bruno H. Pumps for pumping molten metal with a stirring action
US6109449A (en) * 1998-11-04 2000-08-29 General Signal Corporation Mixing system for separation of materials by flotation
US6199836B1 (en) 1998-11-24 2001-03-13 Blasch Precision Ceramics, Inc. Monolithic ceramic gas diffuser for injecting gas into a molten metal bath
US6457940B1 (en) 1999-07-23 2002-10-01 Dale T. Lehman Molten metal pump
CA2717264C (en) * 2000-02-01 2014-04-29 Pyrotek, Inc. Pump for molten materials with suspended solids
GB2365513A (en) * 2000-08-04 2002-02-20 Pyrotek Engineering Materials Refractory components for use in metal producing processes
US6524066B2 (en) * 2001-01-31 2003-02-25 Bruno H. Thut Impeller for molten metal pump with reduced clogging
CN100409931C (zh) * 2003-11-11 2008-08-13 福州华镁新技术开发有限公司 镁合金液搅拌精炼器
BRMU8402794U8 (pt) * 2004-08-27 2021-10-26 Magnesita Insider Refratarios Ltda Configuração aplicada a dispositivo para injeção de gás e/ou gás e pós em metais líquidos através de lança refratária rotativa
CA2528757A1 (en) * 2004-12-02 2006-06-02 Bruno H. Thut Gas mixing and dispersement in pumps for pumping molten metal
US7497988B2 (en) * 2005-01-27 2009-03-03 Thut Bruno H Vortexer apparatus
US7507365B2 (en) * 2005-03-07 2009-03-24 Thut Bruno H Multi functional pump for pumping molten metal
US7534284B2 (en) * 2007-03-27 2009-05-19 Bruno Thut Flux injection with pump for pumping molten metal
KR101036321B1 (ko) * 2008-12-26 2011-05-23 주식회사 포스코 페로망간 탈린 장치 및 탈린 방법
US9259780B2 (en) 2013-03-15 2016-02-16 Esm Group Inc. Rotational lance drive and rotational lance injection method
JP6317604B2 (ja) * 2014-03-20 2018-04-25 東京窯業株式会社 気泡の放出分散装置
US10126060B2 (en) 2015-05-01 2018-11-13 Opta Minerals Inc. Lance drive system
US11066713B2 (en) * 2015-12-09 2021-07-20 Tenova South Africa (Pty) Ltd Method of operating a top submerged lance furnace
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FR2200364A1 (de) * 1972-09-18 1974-04-19 Aluminum Co Of America
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DE2728173A1 (de) * 1977-06-23 1979-01-04 Rudolf Koppatz Ruehrwerk fuer metallschmelzen
GB1578570A (en) * 1976-07-21 1980-11-05 Oestberg J Stirrer for metallurgical melts

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FR1555953A (de) * 1967-02-09 1969-01-31
US3792848A (en) * 1967-02-09 1974-02-19 J Ostberg Device for improving reactions between two components of a metallurgical melt
DE1758186A1 (de) * 1968-04-19 1971-01-14 Dr Heinrich Willter Verfahren und Vorrichtung zur Herstellung dispersionsgeharteter Legierungen aus der Schmelze
FR2166014A1 (de) * 1971-12-27 1973-08-10 Union Carbide Corp
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FR2200364A1 (de) * 1972-09-18 1974-04-19 Aluminum Co Of America
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Cited By (31)

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Publication number Priority date Publication date Assignee Title
EP0162789A1 (de) * 1984-04-06 1985-11-27 Servimetal Vorrichtung zur Stahlbehandlung vor Beginn des Stranggiessens durch Einblasen von Gas
FR2562449A1 (fr) * 1984-04-06 1985-10-11 Servimetal Dispositif de traitement de l'acier, avant coulee continue, par injection de gaz
EP0183402A2 (de) * 1984-11-29 1986-06-04 Foseco International Limited Drehkörper, Vorrichtung und Verfahren zur Behandlung von Metallschmelzen
EP0183402A3 (en) * 1984-11-29 1986-09-03 Foseco International Limited Rotary device, apparatus and method for treating molten metal
FR2604099A1 (fr) * 1986-09-22 1988-03-25 Pechiney Aluminium Dispositif rotatif a pels de mise en solution d'elements d'alliage et de dispersion de gaz dans un bain d'aluminium
EP0262058A1 (de) * 1986-09-22 1988-03-30 Aluminium Pechiney Mit Blättern versehene, drehende Vorrichtung zum Auflösen von Legierungselementen und zur Dispersion von Gas in einem Aluminiumbad
WO1990001985A1 (de) * 1988-08-16 1990-03-08 Dieter Gabor Vorrichtung zur aufbereitung flüssiger bis dünnbreiiger medien
US5292194A (en) * 1988-08-16 1994-03-08 Dieter Gabor Device for preparing liquid to thin pulpy media
EP0365013A3 (de) * 1988-10-21 1991-10-23 Showa Aluminum Kabushiki Kaisha Vorrichtungzur Erzeugung und Verteilung von Blasen in einer Flüssigkeit
EP0365013A2 (de) * 1988-10-21 1990-04-25 Showa Aluminum Kabushiki Kaisha Vorrichtungzur Erzeugung und Verteilung von Blasen in einer Flüssigkeit
US5087292A (en) * 1989-04-11 1992-02-11 L'Air Liquide, Societe Anonyme pour l'Etude et l Exploitation des Procedes Georges Claude Process and apparatus for treating a liquid with a gas
EP0392900A1 (de) * 1989-04-11 1990-10-17 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Vorrichtung für die Behandlung einer Flüssigkeit mit einem Gas
FR2645456A1 (fr) * 1989-04-11 1990-10-12 Air Liquide Procede et installation de traitement d'un liquide avec un gaz
EP0408165A1 (de) * 1989-07-10 1991-01-16 The Carborundum Company Gasverteilung in Metallschmelzen
FR2656001A1 (fr) * 1989-12-18 1991-06-21 Pechiney Recherche Procede et dispositif d'elaboration de produits composites a matrice metallique.
EP0438004A1 (de) * 1989-12-18 1991-07-24 PECHINEY RECHERCHE (Groupement d'Intérêt Economique régi par l'Ordonnance du 23 Septembre 1967) Immeuble Balzac Verfahren und Vorrichtung zum Herstellen von Verbundwerkstoff-Körpern mit Metallmatrix
EP0665198A1 (de) * 1994-01-27 1995-08-02 Foseco International Limited Schlagfeste oxidationsbeständige Beschichtung für Graphitteile
US5656236A (en) * 1994-02-04 1997-08-12 Alcan International Limited Apparatus for gas treatment of molten metals
EP0900853A1 (de) * 1994-02-04 1999-03-10 Alcan International Limited Begasungsrührwerk zur Behandlung von Metallschmelzen
US5593634A (en) * 1994-02-04 1997-01-14 Alcan International Limited Gas treatment of molten metals
US5527381A (en) * 1994-02-04 1996-06-18 Alcan International Limited Gas treatment of molten metals
WO1995021273A1 (en) * 1994-02-04 1995-08-10 Alcan International Limited Gas treatment of molten metals
US5660614A (en) * 1994-02-04 1997-08-26 Alcan International Limited Gas treatment of molten metals
WO1997011034A1 (en) * 1995-09-22 1997-03-27 Bernhard Van Dyk Submersible mixing impeller
AU708143B2 (en) * 1995-09-22 1999-07-29 Bernhard Van Dyk Submersible mixing impeller
US6126150A (en) * 1995-09-22 2000-10-03 Van Dyk; Bernhard Submersible mixing impeller
WO1998005915A1 (fr) * 1996-08-02 1998-02-12 Pechiney Rhenalu Dispositif rotatif de dispersion de gaz pour le traitement d'un bain d'aluminium liquide
US6060013A (en) * 1996-08-02 2000-05-09 Pechiney Rhenalu Rotary gas dispersion device for treating a liquid aluminium bath
WO1999034024A1 (en) * 1997-12-24 1999-07-08 Alcan International Limited Injector for gas treatment of molten metals
US6056803A (en) * 1997-12-24 2000-05-02 Alcan International Limited Injector for gas treatment of molten metals
CN111102850A (zh) * 2019-12-26 2020-05-05 河北工业职业技术学院 金属冶炼用自动匀料器

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YU42045B (en) 1988-04-30
DD202453A5 (de) 1983-09-14
CA1184381A (fr) 1985-03-26
RO85137A (ro) 1984-11-25
NO160527C (no) 1989-04-26
KR840000920A (ko) 1984-03-26
HU186110B (en) 1985-06-28
IE822077L (en) 1983-02-28
ATE12311T1 (de) 1985-04-15
ZA826254B (en) 1983-10-26
EP0073729B1 (de) 1985-03-20
BG41825A3 (en) 1987-08-14
AU8779382A (en) 1983-03-03
PL238022A1 (en) 1983-04-11
IN156351B (de) 1985-06-29
DK158325B (da) 1990-04-30
FR2512067A1 (fr) 1983-03-04
JPS5842734A (ja) 1983-03-12
DE3262681D1 (en) 1985-04-25
GR77611B (de) 1984-09-25
HK27686A (en) 1986-04-25
NO822913L (no) 1983-03-01
US4426068A (en) 1984-01-17
TR21856A (tr) 1985-10-01
CS229943B2 (en) 1984-07-16
YU192982A (en) 1985-03-20
DK158325C (da) 1990-10-01
BR8205026A (pt) 1983-08-09
FR2512067B1 (fr) 1986-02-07
AU546831B2 (en) 1985-09-19
NO160527B (no) 1989-01-16
IE53805B1 (en) 1989-03-01
KR870000508B1 (ko) 1987-03-13
ES515297A0 (es) 1983-07-01
DK384082A (da) 1983-03-01
ES8307914A1 (es) 1983-07-01
EG15395A (en) 1989-01-30
PL131793B1 (en) 1985-01-31
JPS6049700B2 (ja) 1985-11-05
SU1233807A3 (ru) 1986-05-23
RO85137B (ro) 1984-11-30

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