FR2391799A1 - Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows - Google Patents

Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows

Info

Publication number
FR2391799A1
FR2391799A1 FR7717296A FR7717296A FR2391799A1 FR 2391799 A1 FR2391799 A1 FR 2391799A1 FR 7717296 A FR7717296 A FR 7717296A FR 7717296 A FR7717296 A FR 7717296A FR 2391799 A1 FR2391799 A1 FR 2391799A1
Authority
FR
France
Prior art keywords
tube
hole
magnetic field
fed
rotating magnetic
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
FR7717296A
Other languages
French (fr)
Other versions
FR2391799B1 (en
Inventor
Antoine Alemany
Jean Barbet
Yves Fautrelle
Rene Moreau
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
Societe de Vente de lAluminium 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, Societe de Vente de lAluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to FR7717296A priority Critical patent/FR2391799A1/en
Publication of FR2391799A1 publication Critical patent/FR2391799A1/en
Application granted granted Critical
Publication of FR2391799B1 publication Critical patent/FR2391799B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B22F9/10—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 using centrifugal force

Landscapes

  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

The molten metal or alloy is fed down a stationary tube (a) with a small outlet hole (b) in its bottom end; and the melt is rapidly rotated inside tube (a) by a rotating magnetic field created by a fixed stator surrounding tube (a). The result is that fine droplets of metal leave hole (b) as a cone of spray with its apex in hole (b). The pref appts. used a tube (a) with an axial calibrated hole (b); and stator coils fed with 3-phase electric current and possibly using magnetic pole pieces or circuits; or the coils may consist of tubular conductors fed with oil for removing heat. Tube (a) may be made in two parts. The process and device is used esp. to mfr. metal powder or shot of controlled size, or for collecting the drops on a cooled support or drum to mfr. sheet or tubes. The process can be also used to achieve chemical or physical transfers between the droplets and a gas, e.g. for oxidin.; removal of oxide; or degassing.
FR7717296A 1977-05-27 1977-05-27 Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows Granted FR2391799A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7717296A FR2391799A1 (en) 1977-05-27 1977-05-27 Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7717296A FR2391799A1 (en) 1977-05-27 1977-05-27 Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows

Publications (2)

Publication Number Publication Date
FR2391799A1 true FR2391799A1 (en) 1978-12-22
FR2391799B1 FR2391799B1 (en) 1981-10-30

Family

ID=9191740

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7717296A Granted FR2391799A1 (en) 1977-05-27 1977-05-27 Electromagnetic atomisation of molten metals - via rapidly rotating magnetic field in nozzle through which metal flows

Country Status (1)

Country Link
FR (1) FR2391799A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007546A1 (en) * 1986-06-13 1987-12-17 Extramet Method and device for the granulation of a molten material
EP0260617A1 (en) * 1986-09-16 1988-03-23 Centrem S.A. Process and apparatus for preparing and finishing metallic materials
WO1988008345A1 (en) * 1987-04-28 1988-11-03 Otdelenie Problem Preobrazovania I Ispolzovania El Method and device for making granules from a metal melt
WO1990011379A1 (en) * 1989-03-17 1990-10-04 Fiziko-Tekhnichesky Institut Akademii Nauk Belorusskoi Ssr Method and installation for processing scrap of aluminium and of its alloys
EP3479926A1 (en) 2017-11-06 2019-05-08 Technische Universität Graz Method for modifying the particle shape and the particle size distribution of aluminum-based powders

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007546A1 (en) * 1986-06-13 1987-12-17 Extramet Method and device for the granulation of a molten material
FR2600000A1 (en) * 1986-06-13 1987-12-18 Extramet Sa PROCESS AND DEVICE FOR GRANULATING A MOLTEN METAL
AU606600B2 (en) * 1986-06-13 1991-02-14 Extramet Industries Method and device for the granulation of a molten material
EP0260617A1 (en) * 1986-09-16 1988-03-23 Centrem S.A. Process and apparatus for preparing and finishing metallic materials
US4863509A (en) * 1986-09-16 1989-09-05 Centrem S.A. Method and apparatus for producing and further processing metallic substances
WO1988008345A1 (en) * 1987-04-28 1988-11-03 Otdelenie Problem Preobrazovania I Ispolzovania El Method and device for making granules from a metal melt
WO1990011379A1 (en) * 1989-03-17 1990-10-04 Fiziko-Tekhnichesky Institut Akademii Nauk Belorusskoi Ssr Method and installation for processing scrap of aluminium and of its alloys
GB2235701A (en) * 1989-03-17 1991-03-13 Fiz Tekhn I Akademii Nauk Bssr Method and installation for processing scrap of aluminium and of its alloys
EP3479926A1 (en) 2017-11-06 2019-05-08 Technische Universität Graz Method for modifying the particle shape and the particle size distribution of aluminum-based powders

Also Published As

Publication number Publication date
FR2391799B1 (en) 1981-10-30

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Legal Events

Date Code Title Description
CA Change of address
TP Transmission of property
CA Change of address
TP Transmission of property
ST Notification of lapse