IL44013A - Process for the preparation of pulverulent or readily pulverisable alloys of rare earths with cobalt and apparatus for carrying out the same - Google Patents
Process for the preparation of pulverulent or readily pulverisable alloys of rare earths with cobalt and apparatus for carrying out the sameInfo
- Publication number
- IL44013A IL44013A IL44013A IL4401374A IL44013A IL 44013 A IL44013 A IL 44013A IL 44013 A IL44013 A IL 44013A IL 4401374 A IL4401374 A IL 4401374A IL 44013 A IL44013 A IL 44013A
- Authority
- IL
- Israel
- Prior art keywords
- cobalt
- oxide
- rare earth
- process according
- reaction
- Prior art date
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
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
-
- 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
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
- C22B23/021—Obtaining nickel or cobalt by dry processes by reduction in solid state, e.g. by segregation processes
-
- 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
-
- 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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
- C22C1/0441—Alloys based on intermetallic compounds of the type rare earth - Co, Ni
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/0553—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 obtained by reduction or by hydrogen decrepitation or embrittlement
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (16)
1. . A process for preparing a pulverulent or easily pulverizable alloy of a rare earth with cobalt which comprises co-reducing a mix¬ ture of a finely-divided oxide of a rare earth and finely-divided cobalt oxide with gaseous calcium at a temperature in the range of about 1000 —2 to 1400 ° C and a pressure of about ^ 10 Torr. , reducing the particle size of the resulting reaction product to <100^m, and separating the rare earth-cobalt alloy from by-products of the reaction.
2. A process according to claim 1 in which the rare earth-cobalt alloy is separated by treatment with aqueous acid .
3. A process according to claim 1 in which the rare earth-cobalt alloy is separated magnetically.
4. A process according to claim 1 in which the rare earth-cobalt alloy is separated by extraction.
5. A process according to claim 1 in which the gaseous calcium is prepared by the reaction of finely-divided calcium oxide with alumi¬ num powder at a temperature in the range of about 1000 to 1500 ° C .
6. A process according to claim 1 in which the atomic ratio of the rare earth oxide to cobalt oxide is about 1 : 3 to 1 : 9 .
7. A process according to claim 6 in which the atomic ratio is 1 : 5.
8. A process according to claim 1 in which the rare earth oxide is samarium oxide .
9. A proces s according to claim 1 in which cobalt oxide is partially replaced by cobalt powder. 44 1.! ·. / a.
10. A process according to claim 1 in which the mixture contains , in addition, up to 50 per cent by weight of calcium chloride .
11. . A process according to claim 1 in which the mixture contains , in addition , up to 10 per cent by weight of sulfur.
12. . A process according to claim 1 in which up to 60 mole per cent of cobalt oxide is replaced by an element selected from the group consisting of iron , nickel, manganese , and copper, or the oxides thereof .
13. A furnace for preparing a pulverulent or easily pulverizable according to claim 1 J alloy of a rare earth with cobalt/wRlch comprises reaction chamber means , means sealing said reaction chamber means from the atmos¬ phere , means for- evacuating said reaction chamber means , a pair of upwardly-open reaction vessel means in said reaction chamber means , said vessel means being positioned one above the other, a lining in said upper ves sel of a material inert at high tempera¬ tures to a reaction mixture therein, particularly calcium oxide, and means for individually heating said reaction vessel means .
14. A furnace according to claim 13 in which said lower vessel is adapted to contain a reaction mixture of calcium oxide and aluminum.
15. . A furance according to claim 13 in which said upper vessel is adapted to contain a reaction mixture of rare earth oxide and cobalt oxide .
16. A furnace according to claim 13 including pipe means for evac¬ uating said reaction chamber , said pipe means having an inside diame¬ ter not exceeding about 10 mm . 44015/2 7· A furnace according to claim 17 including cooling neans surrounding said pipe moans. 18· A furnace according? to clnita 13 ncludng enclosure means around said reaction cfcesher means, said enclosure means being adapted to be evacuated to a pressure of about 10""1 Torr. 19· A furnace for preparing a pulverulent or easily pulvericable alloy of a rara earth with cobalt substantially as herein described with reference to and as illustrated in the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2303697A DE2303697C2 (en) | 1973-01-26 | 1973-01-26 | Process for the production of alloy powders from rare earths and cobalt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL44013A0 IL44013A0 (en) | 1974-05-16 |
| IL44013A true IL44013A (en) | 1976-12-31 |
Family
ID=5869981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL44013A IL44013A (en) | 1973-01-26 | 1974-01-16 | Process for the preparation of pulverulent or readily pulverisable alloys of rare earths with cobalt and apparatus for carrying out the same |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5316798B2 (en) |
| AT (1) | AT336906B (en) |
| BE (1) | BE808440A (en) |
| BR (1) | BR7400498D0 (en) |
| CA (1) | CA995497A (en) |
| CH (1) | CH596322A5 (en) |
| CS (1) | CS216666B2 (en) |
| DD (1) | DD109237A5 (en) |
| DE (1) | DE2303697C2 (en) |
| FI (1) | FI59616C (en) |
| FR (1) | FR2215480B1 (en) |
| GB (1) | GB1438091A (en) |
| IL (1) | IL44013A (en) |
| IT (1) | IT1002760B (en) |
| NL (1) | NL167730C (en) |
| SE (1) | SE403624B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2631162C3 (en) * | 1975-07-22 | 1980-04-30 | N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) | Process for the production of compounds of rare earth metals and cobalt, nickel, iron and / or copper |
| JPS5487630A (en) * | 1977-12-26 | 1979-07-12 | Fujitsu Ltd | Method of producing rare earth cobalt magnet |
| JPS54102271A (en) * | 1978-01-31 | 1979-08-11 | Nippon Itsutoriumu Kk | Production of rare earth elements containing alloy powder |
| JPS5823451B2 (en) * | 1979-05-01 | 1983-05-16 | 住友特殊金属株式会社 | Manufacturing method of rare earth cobalt magnet |
| US4331475A (en) * | 1980-07-28 | 1982-05-25 | Reading Alloys, Inc. | Process for aluminothermic production of chromium and chromium alloys low in nitrogen |
| US4767450A (en) * | 1984-11-27 | 1988-08-30 | Sumitomo Special Metals Co., Ltd. | Process for producing the rare earth alloy powders |
| JPS61295308A (en) * | 1985-06-24 | 1986-12-26 | Sumitomo Metal Mining Co Ltd | Production of alloy powder containing rare earth metal |
| US4769063A (en) * | 1986-03-06 | 1988-09-06 | Sumitomo Special Metals Co., Ltd. | Method for producing rare earth alloy |
| FR2607520B1 (en) * | 1986-11-27 | 1992-06-19 | Comurhex | PROCESS FOR THE PRODUCTION BY METALLOTHERMY OF PURE ALLOYS BASED ON RARE EARTHS AND TRANSITION METALS |
| DE69009335T2 (en) * | 1989-07-31 | 1994-11-03 | Mitsubishi Materials Corp | Rare earth powder for permanent magnet, manufacturing process and bonded magnet. |
| US5354354A (en) * | 1991-10-22 | 1994-10-11 | Th. Goldschmidt Ag | Method for producing single-phase, incongruently melting intermetallic phases |
| CN108168294B (en) * | 2017-12-18 | 2024-02-09 | 保定硼达新材料科技有限公司 | Vacuum furnace |
| CN111500879B (en) * | 2020-05-28 | 2021-07-27 | 清华大学 | Method for extracting rare earth elements based on magnetic Janus particles |
-
1973
- 1973-01-26 DE DE2303697A patent/DE2303697C2/en not_active Expired
- 1973-11-09 CH CH1578473A patent/CH596322A5/xx not_active IP Right Cessation
- 1973-11-28 FI FI3662/73A patent/FI59616C/en active
- 1973-12-10 BE BE138699A patent/BE808440A/en not_active IP Right Cessation
- 1973-12-18 DD DD175752A patent/DD109237A5/xx unknown
- 1973-12-20 CA CA188,625A patent/CA995497A/en not_active Expired
- 1973-12-26 FR FR7346270A patent/FR2215480B1/fr not_active Expired
-
1974
- 1974-01-07 GB GB72574A patent/GB1438091A/en not_active Expired
- 1974-01-16 IL IL44013A patent/IL44013A/en unknown
- 1974-01-21 JP JP918574A patent/JPS5316798B2/ja not_active Expired
- 1974-01-23 BR BR498/74A patent/BR7400498D0/en unknown
- 1974-01-24 SE SE7400915A patent/SE403624B/en not_active IP Right Cessation
- 1974-01-24 IT IT47915/74A patent/IT1002760B/en active
- 1974-01-25 AT AT63274A patent/AT336906B/en not_active IP Right Cessation
- 1974-01-25 CS CS74497A patent/CS216666B2/en unknown
- 1974-01-25 NL NL7401096A patent/NL167730C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS49104860A (en) | 1974-10-03 |
| DE2303697C2 (en) | 1974-07-18 |
| GB1438091A (en) | 1976-06-03 |
| IL44013A0 (en) | 1974-05-16 |
| DE2303697B1 (en) | 1973-12-06 |
| IT1002760B (en) | 1976-05-20 |
| CA995497A (en) | 1976-08-24 |
| ATA63274A (en) | 1976-09-15 |
| FR2215480A1 (en) | 1974-08-23 |
| NL167730C (en) | 1982-01-18 |
| NL7401096A (en) | 1974-07-30 |
| FR2215480B1 (en) | 1976-10-08 |
| JPS5316798B2 (en) | 1978-06-03 |
| BR7400498D0 (en) | 1974-10-29 |
| NL167730B (en) | 1981-08-17 |
| AT336906B (en) | 1977-06-10 |
| CS216666B2 (en) | 1982-11-26 |
| FI59616B (en) | 1981-05-29 |
| FI59616C (en) | 1981-09-10 |
| DE2303697A1 (en) | 1973-12-06 |
| DD109237A5 (en) | 1974-10-20 |
| BE808440A (en) | 1974-03-29 |
| CH596322A5 (en) | 1978-03-15 |
| SE403624B (en) | 1978-08-28 |
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