CN104884649A - 稀土元素的回收方法 - Google Patents
稀土元素的回收方法 Download PDFInfo
- Publication number
- CN104884649A CN104884649A CN201380068234.3A CN201380068234A CN104884649A CN 104884649 A CN104884649 A CN 104884649A CN 201380068234 A CN201380068234 A CN 201380068234A CN 104884649 A CN104884649 A CN 104884649A
- Authority
- CN
- China
- Prior art keywords
- rare earth
- carbon black
- crucible
- earth element
- object thing
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 110
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 85
- 239000006229 carbon black Substances 0.000 claims abstract description 101
- 238000011282 treatment Methods 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 180
- 229910052742 iron Inorganic materials 0.000 claims description 88
- 239000002245 particle Substances 0.000 claims description 55
- 238000012545 processing Methods 0.000 claims description 50
- 150000001875 compounds Chemical class 0.000 claims description 31
- 239000000463 material Substances 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 239000011261 inert gas Substances 0.000 abstract 1
- 235000019241 carbon black Nutrition 0.000 description 98
- 239000003610 charcoal Substances 0.000 description 78
- 238000007669 thermal treatment Methods 0.000 description 60
- 238000005502 peroxidation Methods 0.000 description 38
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 29
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 26
- 239000000470 constituent Substances 0.000 description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 25
- 239000001301 oxygen Substances 0.000 description 25
- 229910052760 oxygen Inorganic materials 0.000 description 25
- 239000007789 gas Substances 0.000 description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- 229910052786 argon Inorganic materials 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 239000006232 furnace black Substances 0.000 description 9
- 238000000227 grinding Methods 0.000 description 9
- 238000000926 separation method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003513 alkali Substances 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 235000012054 meals Nutrition 0.000 description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 5
- 238000005275 alloying Methods 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 229910000640 Fe alloy Inorganic materials 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 206010067482 No adverse event Diseases 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910015900 BF3 Inorganic materials 0.000 description 1
- 239000004484 Briquette Substances 0.000 description 1
- 229910001108 Charcoal iron Inorganic materials 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
Fe | Nd | Pr | Dy | B | Al | Si | Na | C | O |
49.2 | 16.4 | 4.1 | 2.9 | 0.76 | 0.17 | 0.04 | 0.02 | 0.52 | 19.5 |
Fe | Nd | Pr | Dy | B | Co | C | O |
50.3 | 15.2 | 4.36 | 3.84 | 0.78 | 1.34 | 0.52 | 19.8 |
Fe | Nd | Pr | Dy | Co | C | O | |
相A | 85.2 | - | - | - | 4.5 | 10.4 | - |
相B | - | 49.0 | 12.9 | 14.0 | - | - | 24.1 |
Fe | Nd | Pr | Dy | B | Al | Co | Cu | Si | 其它 |
65.3 | 22.8 | 0.1 | 8.6 | 0.9 | 0.2 | 0.9 | 0.1 | 0.02 | 1.08 |
Claims (5)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-283287 | 2012-12-26 | ||
JP2012283287 | 2012-12-26 | ||
JP2013133415 | 2013-06-26 | ||
JP2013-133415 | 2013-06-26 | ||
PCT/JP2013/084922 WO2014104205A1 (ja) | 2012-12-26 | 2013-12-26 | 希土類元素の回収方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104884649A true CN104884649A (zh) | 2015-09-02 |
CN104884649B CN104884649B (zh) | 2018-05-29 |
Family
ID=51021279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201380068234.3A Active CN104884649B (zh) | 2012-12-26 | 2013-12-26 | 稀土元素的回收方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10081040B2 (zh) |
EP (1) | EP2940163B1 (zh) |
JP (1) | JP5598635B1 (zh) |
CN (1) | CN104884649B (zh) |
WO (1) | WO2014104205A1 (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104955969B (zh) | 2013-01-28 | 2017-08-15 | 日立金属株式会社 | 重稀土元素的回收方法 |
WO2014192874A1 (ja) | 2013-05-31 | 2014-12-04 | 日立金属株式会社 | 希土類元素の回収方法 |
CN106133157A (zh) * | 2014-03-28 | 2016-11-16 | 日立金属株式会社 | 稀土元素的回收方法 |
JP6413877B2 (ja) * | 2014-03-28 | 2018-10-31 | 日立金属株式会社 | 希土類元素の回収方法 |
JP6323284B2 (ja) * | 2014-09-29 | 2018-05-16 | 日立金属株式会社 | 希土類元素の回収方法 |
FR3042428B1 (fr) * | 2015-10-19 | 2017-12-08 | Centre Nat Rech Scient | Procede et systeme de recuperation de terre rare presente au sein d'un objet |
KR102652842B1 (ko) * | 2023-10-18 | 2024-03-29 | (주)엠케이 솔라 | 폐 산화 이터븀의 재생방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1511966A (zh) * | 2002-12-30 | 2004-07-14 | 北京有色金属研究总院 | 一种高含铁稀土原矿的选矿工艺 |
JP2005002463A (ja) * | 2003-05-19 | 2005-01-06 | Osaka Industrial Promotion Organization | 希土類−遷移金属系スクラップのリサイクル方法、電波吸収用磁性体粉末及びそれを用いた電波吸収体 |
CN102325911A (zh) * | 2009-02-27 | 2012-01-18 | 国立大学法人大阪大学 | 从re-tm系混合物中回收稀土类元素的方法 |
JP2012041588A (ja) * | 2010-08-17 | 2012-03-01 | Akita Univ | 塩化揮発法による希土類元素の分離方法及び分離システム |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3549350A (en) * | 1967-04-04 | 1970-12-22 | Burgess Norton Mfg Co | Method of treating scrap metal |
JPS61122121A (ja) * | 1984-11-19 | 1986-06-10 | Mitsubishi Chem Ind Ltd | 酸化イットリウム粉体の製造方法 |
JP2006077264A (ja) * | 2004-09-07 | 2006-03-23 | Kenichi Machida | 希土類焼結磁石および遷移金属系スクラップのリサイクル方法、GHz帯域対応電波吸収体用磁性体粉末および電波吸収体の製造方法 |
JP5146658B2 (ja) | 2008-04-04 | 2013-02-20 | 信越化学工業株式会社 | 希土類元素の回収方法 |
US9322082B2 (en) | 2011-07-29 | 2016-04-26 | Hitachi Metals, Ltd. | Method for recovering rare earth element |
-
2013
- 2013-12-26 US US14/654,906 patent/US10081040B2/en active Active
- 2013-12-26 EP EP13869804.8A patent/EP2940163B1/en active Active
- 2013-12-26 JP JP2014516521A patent/JP5598635B1/ja active Active
- 2013-12-26 WO PCT/JP2013/084922 patent/WO2014104205A1/ja active Application Filing
- 2013-12-26 CN CN201380068234.3A patent/CN104884649B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1511966A (zh) * | 2002-12-30 | 2004-07-14 | 北京有色金属研究总院 | 一种高含铁稀土原矿的选矿工艺 |
JP2005002463A (ja) * | 2003-05-19 | 2005-01-06 | Osaka Industrial Promotion Organization | 希土類−遷移金属系スクラップのリサイクル方法、電波吸収用磁性体粉末及びそれを用いた電波吸収体 |
CN102325911A (zh) * | 2009-02-27 | 2012-01-18 | 国立大学法人大阪大学 | 从re-tm系混合物中回收稀土类元素的方法 |
JP2012041588A (ja) * | 2010-08-17 | 2012-03-01 | Akita Univ | 塩化揮発法による希土類元素の分離方法及び分離システム |
Non-Patent Citations (1)
Title |
---|
NAKAMOTO MASASHI ET AL.: "Extraction of Rare Earth Elements as Oxides from a Neodymium Magnetic Sludge", 《METALLURGICAL AND MATERIALS TRANSACTIONS B》 * |
Also Published As
Publication number | Publication date |
---|---|
JP5598635B1 (ja) | 2014-10-01 |
JPWO2014104205A1 (ja) | 2017-01-19 |
CN104884649B (zh) | 2018-05-29 |
US10081040B2 (en) | 2018-09-25 |
WO2014104205A1 (ja) | 2014-07-03 |
EP2940163B1 (en) | 2017-09-13 |
EP2940163A1 (en) | 2015-11-04 |
EP2940163A4 (en) | 2016-09-07 |
US20150344991A1 (en) | 2015-12-03 |
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Address after: Japan Tokyo port harbor 2 chome No. 70 Applicant after: Hitachi Metals Co., Ltd. Address before: Tokyo, Japan Applicant before: Hitachi Metals Co., Ltd. |
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COR | Change of bibliographic data | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20150902 Assignee: Hitachi metal ring Ci material (Nantong) Co. Ltd. Assignor: Hitachi Metals Contract record no.: 2017990000034 Denomination of invention: Method for recovering heavy rare earth element License type: Common License Record date: 20170209 |
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LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
CI02 | Correction of invention patent application |
Correction item: A transferee of the entry into force of the contract Correct: Hitachi metal ring magnets (Nantong) Co. Ltd. False: Hitachi metal ring Ci material (Nantong) Co. Ltd. Number: 11 Volume: 33 |
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CI02 | Correction of invention patent application | ||
GR01 | Patent grant | ||
GR01 | Patent grant |