ATE36560T1 - METALLOTHERMAL REDUCTION OF RARE EARTH OXIDES USING CALCIUM. - Google Patents

METALLOTHERMAL REDUCTION OF RARE EARTH OXIDES USING CALCIUM.

Info

Publication number
ATE36560T1
ATE36560T1 AT85304046T AT85304046T ATE36560T1 AT E36560 T1 ATE36560 T1 AT E36560T1 AT 85304046 T AT85304046 T AT 85304046T AT 85304046 T AT85304046 T AT 85304046T AT E36560 T1 ATE36560 T1 AT E36560T1
Authority
AT
Austria
Prior art keywords
rare earth
calcium
earth oxides
oxides
metallothermal reduction
Prior art date
Application number
AT85304046T
Other languages
German (de)
Inventor
Ram Autar Sharma
Original Assignee
Gen Motors Corp
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 Gen Motors Corp filed Critical Gen Motors Corp
Application granted granted Critical
Publication of ATE36560T1 publication Critical patent/ATE36560T1/en

Links

Classifications

    • 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
    • C22B5/00—General methods of reducing to 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
    • C22B59/00—Obtaining rare earth 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon

Abstract

Rare earth oxides can be reduced to rare earth metals by, a novel, high yield, metallothermic process. The oxides are dispersed in a suitable, molten, calcium chloride-based bath (44) along with calcium metal. The bath (44) is agitated and calcium metal reduces the rare earth oxides to rare earth metals. The metals collect in a discrete layer (43) in the reaction vessel (22).
AT85304046T 1984-07-03 1985-06-07 METALLOTHERMAL REDUCTION OF RARE EARTH OXIDES USING CALCIUM. ATE36560T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62773684A 1984-07-03 1984-07-03
EP85304046A EP0170372B1 (en) 1984-07-03 1985-06-07 Metallothermic reduction of rare earth oxides with calcium metal

Publications (1)

Publication Number Publication Date
ATE36560T1 true ATE36560T1 (en) 1988-09-15

Family

ID=24515917

Family Applications (1)

Application Number Title Priority Date Filing Date
AT85304046T ATE36560T1 (en) 1984-07-03 1985-06-07 METALLOTHERMAL REDUCTION OF RARE EARTH OXIDES USING CALCIUM.

Country Status (10)

Country Link
EP (1) EP0170372B1 (en)
JP (1) JPS6130639A (en)
KR (1) KR910001581B1 (en)
AT (1) ATE36560T1 (en)
AU (1) AU575965B2 (en)
BR (1) BR8503140A (en)
DE (1) DE3564451D1 (en)
ES (1) ES8702508A1 (en)
MX (1) MX173880B (en)
ZA (1) ZA854474B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578242A (en) * 1984-07-03 1986-03-25 General Motors Corporation Metallothermic reduction of rare earth oxides
US4680055A (en) * 1986-03-18 1987-07-14 General Motors Corporation Metallothermic reduction of rare earth chlorides
US4837109A (en) * 1986-07-21 1989-06-06 Hitachi Metals, Ltd. Method of producing neodymium-iron-boron permanent magnet
AT389899B (en) * 1986-08-19 1990-02-12 Treibacher Chemische Werke Ag METHOD FOR THE PRODUCTION OF SE METALS AND ALLOYS CONTAINING SE
JPH01138119A (en) * 1987-11-24 1989-05-31 Mitsubishi Metal Corp Recovery of samarium and europium from electrolytic slag of rare-earth element
DE3817553A1 (en) * 1988-05-24 1989-11-30 Leybold Ag METHOD FOR PRODUCING TITANIUM AND ZIRCONIUM
US4917724A (en) * 1988-10-11 1990-04-17 General Motors Corporation Method of decalcifying rare earth metals formed by the reduction-diffusion process
KR100373109B1 (en) * 1999-09-30 2003-02-25 해 남 현 Extraction method of soil exchangeable K with salt solution and analytical method of the K in the solution
JP2004052003A (en) * 2002-07-16 2004-02-19 Cabot Supermetal Kk Method and apparatus for producing niobium powder or tantalum powder
RU2405045C2 (en) * 2008-05-12 2010-11-27 Анатолий Евгеньевич Волков Method of autoclave production of chemically active materials and device to this end
CN102844104A (en) * 2010-01-12 2012-12-26 西尔万资源公司 Heat transfer interface
CN103436718B (en) * 2013-08-16 2015-06-17 宁夏东方钽业股份有限公司 High-purity lanthanum metal preparation method
WO2019232276A1 (en) 2018-05-30 2019-12-05 Hela Novel Metals Llc Methods for the production of fine metal powders from metal compounds
KR102153737B1 (en) * 2019-12-12 2020-09-09 한국지질자원연구원 Method of recovery rare earth elements from a ferrite-rare earth-based permanent magnet using selective chlorination
CN111139366A (en) * 2020-01-17 2020-05-12 蔡天财 Method and equipment for preparing and purifying nuclear pure-grade cooling material in sodium-cooled fast reactor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190923215A (en) * 1909-10-11 1910-09-29 Hans Kuzel Process for the Production of Zirconium and other Rare Metals.
US2950962A (en) * 1957-03-28 1960-08-30 Carlson Oscar Norman Reduction of fluoride to metal
GB1040468A (en) * 1964-10-26 1966-08-24 Dow Chemical Co Preparation of rare earth metal, yttrium, or scandium
GB1579978A (en) * 1977-07-05 1980-11-26 Johnson Matthey Co Ltd Production of yttrium
SU1027232A1 (en) * 1982-01-15 1983-07-07 Научно-исследовательский институт металлургии Method for producing master alloy
EP0108474B2 (en) * 1982-09-03 1995-06-21 General Motors Corporation RE-TM-B alloys, method for their production and permanent magnets containing such alloys
JPS59177346A (en) * 1983-03-25 1984-10-08 Sumitomo Special Metals Co Ltd Alloy of rare earth metal for magnet material
JPS6077943A (en) * 1983-10-03 1985-05-02 Sumitomo Special Metals Co Ltd Manufacture of raw material alloy for rare earth magnet
US4578242A (en) * 1984-07-03 1986-03-25 General Motors Corporation Metallothermic reduction of rare earth oxides

Also Published As

Publication number Publication date
ES544799A0 (en) 1987-01-01
BR8503140A (en) 1986-03-18
EP0170372A1 (en) 1986-02-05
MX173880B (en) 1994-04-07
KR860001203A (en) 1986-02-24
JPS6130639A (en) 1986-02-12
DE3564451D1 (en) 1988-09-22
JPS6137341B2 (en) 1986-08-23
KR910001581B1 (en) 1991-03-16
EP0170372B1 (en) 1988-08-17
AU575965B2 (en) 1988-08-11
ES8702508A1 (en) 1987-01-01
ZA854474B (en) 1986-03-26
AU4448885A (en) 1986-01-09

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Legal Events

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UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee