MX173880B - Reduccion metalotermica de oxidos de tierra rara con metal de calcio - Google Patents

Reduccion metalotermica de oxidos de tierra rara con metal de calcio

Info

Publication number
MX173880B
MX173880B MX026616A MX2661685A MX173880B MX 173880 B MX173880 B MX 173880B MX 026616 A MX026616 A MX 026616A MX 2661685 A MX2661685 A MX 2661685A MX 173880 B MX173880 B MX 173880B
Authority
MX
Mexico
Prior art keywords
rare earth
calcium metal
earth oxides
oxides
metallothermal reduction
Prior art date
Application number
MX026616A
Other languages
English (en)
Inventor
Ran 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
Publication of MX173880B publication Critical patent/MX173880B/es

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

La presente invención se refiere a un metodo metalotermico, no electrolítico, para reducir óxido de tierra rara a metal de tierra rara, que consiste en que: la reducción ocurre en un baño de sal fundido compuesto predominantemente de cloruro de calcio, se dispersa en el baño un volumen de tierra rara que es menor que el volumen del baño de sal, se agrega al baño un exceso estequiometrico de metal de calcio con respecto a la cantidad del ion de metal de tierra rara presente; y se agita el baño hasta que se reduzca el óxido a metal de tierra rara, de acuerdo con la fórmula. en donde RE representa uno o más elementos de tierra rara, que tienen una valencia de 2, 3 ó 4, 0 representa oxígeno, Ca representa calcio, CAO representa óxido de calcio, y n y m son enteros tales que la valencia del elemento de tierra rara multiplicando por n sea igual a la valencia de oxígeno multiplicando por m.
MX026616A 1984-07-03 1985-06-28 Reduccion metalotermica de oxidos de tierra rara con metal de calcio MX173880B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62773684A 1984-07-03 1984-07-03

Publications (1)

Publication Number Publication Date
MX173880B true MX173880B (es) 1994-04-07

Family

ID=24515917

Family Applications (1)

Application Number Title Priority Date Filing Date
MX026616A MX173880B (es) 1984-07-03 1985-06-28 Reduccion metalotermica de oxidos de tierra rara con metal de calcio

Country Status (10)

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

Families Citing this family (14)

* 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 (de) * 1986-08-19 1990-02-12 Treibacher Chemische Werke Ag Verfahren zur herstellung von se-metallen und se-haltigen legierungen
JPH01138119A (ja) * 1987-11-24 1989-05-31 Mitsubishi Metal Corp 希土類電解スラグからサマリウムとユーロピウムを回収する方法
DE3817553A1 (de) * 1988-05-24 1989-11-30 Leybold Ag Verfahren zum herstellen von titan und zirkonium
US4917724A (en) * 1988-10-11 1990-04-17 General Motors Corporation Method of decalcifying rare earth metals formed by the reduction-diffusion process
KR100373109B1 (ko) * 1999-09-30 2003-02-25 해 남 현 토양의 치환성 칼리 침출방법 및 이를 이용하여 침출된 토양 치환성 칼리의 정량방법
JP2004052003A (ja) * 2002-07-16 2004-02-19 Cabot Supermetal Kk ニオブ粉末またはタンタル粉末の製造方法および製造装置
RU2405045C2 (ru) * 2008-05-12 2010-11-27 Анатолий Евгеньевич Волков Способ и устройство автоклавного производства химически активных металлов
CN102844104A (zh) * 2010-01-12 2012-12-26 西尔万资源公司 导热接口
CN103436718B (zh) * 2013-08-16 2015-06-17 宁夏东方钽业股份有限公司 一种高纯金属镧的制取方法
US11607734B2 (en) 2018-05-30 2023-03-21 Hela Novel Metals Llc Methods for the production of fine metal powders from metal compounds
KR102153737B1 (ko) * 2019-12-12 2020-09-09 한국지질자원연구원 철-희토류계 영구자석으로부터 선택염화법에 의한 희토류 원소의 회수 방법

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 (ru) * 1982-01-15 1983-07-07 Научно-исследовательский институт металлургии Способ получени лигатуры
DE3379131D1 (en) * 1982-09-03 1989-03-09 Gen Motors Corp Re-tm-b alloys, method for their production and permanent magnets containing such alloys
JPS59177346A (ja) * 1983-03-25 1984-10-08 Sumitomo Special Metals Co Ltd 希土類磁石素材用配合合金
JPS6077943A (ja) * 1983-10-03 1985-05-02 Sumitomo Special Metals Co Ltd 希土類磁石用原料合金の製造方法
US4578242A (en) * 1984-07-03 1986-03-25 General Motors Corporation Metallothermic reduction of rare earth oxides

Also Published As

Publication number Publication date
JPS6137341B2 (es) 1986-08-23
ES8702508A1 (es) 1987-01-01
ATE36560T1 (de) 1988-09-15
KR910001581B1 (ko) 1991-03-16
ES544799A0 (es) 1987-01-01
BR8503140A (pt) 1986-03-18
EP0170372A1 (en) 1986-02-05
JPS6130639A (ja) 1986-02-12
AU575965B2 (en) 1988-08-11
EP0170372B1 (en) 1988-08-17
DE3564451D1 (en) 1988-09-22
KR860001203A (ko) 1986-02-24
AU4448885A (en) 1986-01-09
ZA854474B (en) 1986-03-26

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