GB2309465A - Production of granules of reactive metals,for example magnesium and magnesium alloy - Google Patents

Production of granules of reactive metals,for example magnesium and magnesium alloy

Info

Publication number
GB2309465A
GB2309465A GB9708275A GB9708275A GB2309465A GB 2309465 A GB2309465 A GB 2309465A GB 9708275 A GB9708275 A GB 9708275A GB 9708275 A GB9708275 A GB 9708275A GB 2309465 A GB2309465 A GB 2309465A
Authority
GB
United Kingdom
Prior art keywords
granules
droplets
magnesium
fluidized bed
metal
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
GB9708275A
Other versions
GB2309465B (en
GB9708275D0 (en
Inventor
Serge Lavoie
Ghyslain Dube
Sylvain Trottier
Gilles Turcotte
Stephane Rompre
Claude Dupuis
Joseph Langlais
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 Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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
Priority claimed from US08346488 external-priority patent/US5549732B1/en
Application filed by Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Publication of GB9708275D0 publication Critical patent/GB9708275D0/en
Publication of GB2309465A publication Critical patent/GB2309465A/en
Application granted granted Critical
Publication of GB2309465B publication Critical patent/GB2309465B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • C21C1/10—Making spheroidal graphite cast-iron
    • C21C1/105—Nodularising additive agents
    • 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
    • B22F1/16—Metallic particles coated with a non-metal
    • 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
    • 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
    • B22F2009/086—Cooling after atomisation
    • B22F2009/0864—Cooling after atomisation by oil, other non-aqueous fluid or fluid-bed cooling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

A process of producing granules of a reactive metal. The process comprises providing a source of molten reactive metal (41), forming discrete droplets (53) of the molten metal, contacting the droplets while still substantially molten with a fluidized bed of particles (12) maintained at a temperature substantially below the solidus temperature of the metal and freezing the droplets as discrete granules of the reactive metal in the fluidized bed. The invention also provides apparatus for carrying out the method and product produced by the method, including a magnesium-containing additive for aluminum alloying. The use of a fluidized bed for cooling and freezing the droplets avoids problems encountered in prior methods and also makes it possible to provide coatings of various kinds on the surfaces of the granules, if desired.
GB9708275A 1994-10-28 1995-10-27 Production of granules of reactive metals,for example magnesium and magnesium alloy Expired - Fee Related GB2309465B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US33090494A 1994-10-28 1994-10-28
US08346488 US5549732B1 (en) 1994-11-29 1994-11-29 Production of granules of reactive metals for example magnesium and magnesium alloy
PCT/CA1995/000605 WO1996013351A1 (en) 1994-10-28 1995-10-27 Production of granules of reactive metals, for example magnesium and magnesium alloy

Publications (3)

Publication Number Publication Date
GB9708275D0 GB9708275D0 (en) 1997-06-18
GB2309465A true GB2309465A (en) 1997-07-30
GB2309465B GB2309465B (en) 1998-07-08

Family

ID=26987506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9708275A Expired - Fee Related GB2309465B (en) 1994-10-28 1995-10-27 Production of granules of reactive metals,for example magnesium and magnesium alloy

Country Status (7)

Country Link
JP (1) JPH10506434A (en)
AU (1) AU704321B2 (en)
DE (1) DE19581818T1 (en)
GB (1) GB2309465B (en)
IL (1) IL115780A (en)
NO (1) NO971896D0 (en)
WO (1) WO1996013351A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110465673B (en) * 2019-09-28 2020-07-28 南阳裕泰隆粉体材料有限公司 Dust protected metal powder apparatus for producing

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1637377A (en) * 1926-01-22 1927-08-02 Armour & Co Pellet-forming apparatus
FR2150710A1 (en) * 1971-08-31 1973-04-13 Mannesmann Ag
AU6886674A (en) * 1974-05-13 1975-11-13 Vni I Proketny I Titana And I Producing granules of magnesium
EP0066305A1 (en) * 1981-05-27 1982-12-08 Metallgesellschaft Ag Additive in wire form for treating molten metals
WO1986006013A1 (en) * 1985-04-16 1986-10-23 Battelle Memorial Institute Process for the manufacture of metallic powders
WO1994017941A1 (en) * 1993-02-06 1994-08-18 Osprey Metals Limited Production of powder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969104A (en) * 1974-02-19 1976-07-13 Ivan Andreevich Barannik Granules of magnesium and its alloys
NO148061C (en) * 1981-02-05 1986-05-13 Norsk Hydro As PROCEDURE FOR THE PREPARATION OF SALT COATED METAL PARTICLES.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1637377A (en) * 1926-01-22 1927-08-02 Armour & Co Pellet-forming apparatus
FR2150710A1 (en) * 1971-08-31 1973-04-13 Mannesmann Ag
AU6886674A (en) * 1974-05-13 1975-11-13 Vni I Proketny I Titana And I Producing granules of magnesium
EP0066305A1 (en) * 1981-05-27 1982-12-08 Metallgesellschaft Ag Additive in wire form for treating molten metals
WO1986006013A1 (en) * 1985-04-16 1986-10-23 Battelle Memorial Institute Process for the manufacture of metallic powders
WO1994017941A1 (en) * 1993-02-06 1994-08-18 Osprey Metals Limited Production of powder

Also Published As

Publication number Publication date
GB2309465B (en) 1998-07-08
IL115780A0 (en) 1996-01-19
IL115780A (en) 1999-08-17
JPH10506434A (en) 1998-06-23
AU3695495A (en) 1996-05-23
AU704321B2 (en) 1999-04-22
DE19581818T1 (en) 1997-10-16
NO971896L (en) 1997-04-24
GB9708275D0 (en) 1997-06-18
WO1996013351A1 (en) 1996-05-09
NO971896D0 (en) 1997-04-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20061027