JP6090737B2 - 希土類金属の回収方法 - Google Patents
希土類金属の回収方法 Download PDFInfo
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- JP6090737B2 JP6090737B2 JP2012266082A JP2012266082A JP6090737B2 JP 6090737 B2 JP6090737 B2 JP 6090737B2 JP 2012266082 A JP2012266082 A JP 2012266082A JP 2012266082 A JP2012266082 A JP 2012266082A JP 6090737 B2 JP6090737 B2 JP 6090737B2
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- JP
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- Prior art keywords
- rare earth
- earth metal
- recovering
- anode
- sulfone
- 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.)
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims description 80
- 150000002910 rare earth metals Chemical class 0.000 title claims description 58
- 238000000034 method Methods 0.000 title claims description 25
- 238000011084 recovery Methods 0.000 title claims description 11
- -1 rare earth metal ions Chemical class 0.000 claims description 29
- 238000005868 electrolysis reaction Methods 0.000 claims description 24
- 150000003457 sulfones Chemical class 0.000 claims description 20
- 229910052779 Neodymium Inorganic materials 0.000 claims description 11
- 238000004070 electrodeposition Methods 0.000 claims description 11
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 9
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 claims description 8
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 19
- 239000008151 electrolyte solution Substances 0.000 description 16
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 11
- 239000000243 solution Substances 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 8
- 238000000151 deposition Methods 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910001172 neodymium magnet Inorganic materials 0.000 description 6
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical compound CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910021397 glassy carbon Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 3
- YBJCDTIWNDBNTM-UHFFFAOYSA-N 1-methylsulfonylethane Chemical compound CCS(C)(=O)=O YBJCDTIWNDBNTM-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002366 halogen compounds Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 229910052702 rhenium Inorganic materials 0.000 description 2
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- PVSJGAIWOIMZFG-UHFFFAOYSA-N 1-ethylsulfonylbutane Chemical compound CCCCS(=O)(=O)CC PVSJGAIWOIMZFG-UHFFFAOYSA-N 0.000 description 1
- MBDUIEKYVPVZJH-UHFFFAOYSA-N 1-ethylsulfonylethane Chemical compound CCS(=O)(=O)CC MBDUIEKYVPVZJH-UHFFFAOYSA-N 0.000 description 1
- URDYJNJREUFXGD-UHFFFAOYSA-N 1-ethylsulfonylpropane Chemical compound CCCS(=O)(=O)CC URDYJNJREUFXGD-UHFFFAOYSA-N 0.000 description 1
- QRXUXNUNFHPWLQ-UHFFFAOYSA-N 1-methylsulfonylbutane Chemical compound CCCCS(C)(=O)=O QRXUXNUNFHPWLQ-UHFFFAOYSA-N 0.000 description 1
- GUBNFBYCBZWEES-UHFFFAOYSA-N 1-methylsulfonylpentane Chemical compound CCCCCS(C)(=O)=O GUBNFBYCBZWEES-UHFFFAOYSA-N 0.000 description 1
- QAPSIUMUNHNUPW-UHFFFAOYSA-N 1-methylsulfonylpropane Chemical compound CCCS(C)(=O)=O QAPSIUMUNHNUPW-UHFFFAOYSA-N 0.000 description 1
- JEXYCADTAFPULN-UHFFFAOYSA-N 1-propylsulfonylpropane Chemical compound CCCS(=O)(=O)CCC JEXYCADTAFPULN-UHFFFAOYSA-N 0.000 description 1
- VTWYQAQIXXAXOR-UHFFFAOYSA-N 2-methylsulfonylpropane Chemical compound CC(C)S(C)(=O)=O VTWYQAQIXXAXOR-UHFFFAOYSA-N 0.000 description 1
- 229910000497 Amalgam Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 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
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002659 electrodeposit Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 1
- ATINCSYRHURBSP-UHFFFAOYSA-K neodymium(iii) chloride Chemical compound Cl[Nd](Cl)Cl ATINCSYRHURBSP-UHFFFAOYSA-K 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- XRADHEAKQRNYQQ-UHFFFAOYSA-K trifluoroneodymium Chemical compound F[Nd](F)F XRADHEAKQRNYQQ-UHFFFAOYSA-K 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
Description
上記式(1)において、R1,R2は、同一又は異なる炭素数よりなるアルキル基であり、R1,R2の炭素数の合計は、2〜6である。またR1,R2の一方端は硫黄原子に結合しているが、他は、場合によっては両者が結合し、環状を形成していてもよい。アルキルの具体例としては、メチル基、エチル基、プロプル基、ブチル基、ペンチル基であり、これらは分枝を有していてもよいし、また2重結合が存在していてもよい。但し、アルキル基が大きくなると、金属イオンの溶解液が低下するため、本発明にあっては、R1,R2の合計の炭素数は6程度までが好ましい。従って、本発明のジアルキルスルホン化合物としては、ジメチルスルホン、メチルエチルスルホン、メチルプロピルスルホン、メチルブチルスルホン、メチルペンチルスルホン、ジエチルスルホン、エチルプロピルスルホン、エチルブチルスルホン、ジプロピルスルホン、スルホラン、メチルアクリルスルホン、メチルアリルスルホン等であり、例えばジメチルスルホンやスルホラン等の如く融点が常温以上の場合は、それらが溶解する以上の温度、例えば30℃〜130℃程度の温度で電解を行えばよい。
〔実験方法〕
試験極には銅板(0.5 cm×2.5 cm)を、対極にはグラシーカーボン板(2
cm×2.5 cm)、 参照極には銀線を使用した(図1参照)。電析には、ポテンショガルバノスタット(東陽テクニカ solartoron 1280C)を使用し定電位-3.5 V(vs. Ag)で1時間行った。電析出物の形態は、走査型電子顕微鏡(SEM, 株式会社キーエンスVE-9800)で観察した。析出物の定性は、 エネルギー分散型X線分析装置(EDX, エダックスジャパン株式会社)で行った。
上記(a)〜(d)の電極結果のSEM写真を図6に示し、エネルギー分散型X線分析図を図7に示す。図6において、左から(a)、(b)、(c)、(d)の結果を示す。
Claims (6)
- 電解槽内において、希土類金属イオンと希土類金属以外の金属イオンとが溶存するジアルキルスルホンの溶液を電解処理して、陰極表面に希土類金属を電析する希土類金属の回収方法において、電析時の電位及び陰極過電圧の相違による電解時の電流値の変化に基づき、希土類金属の回収における初期又は終期を定めることを特徴とする希土類金属の回収方法。
- ジアルキルスルホンが次式(1)で表わされる化合物であることを特徴とする請求項1記載の希土類金属の回収方法。
- 希土類金属がネオジムである請求項1又は2記載の希土類金属の回収方法。
- 希土類金属がジスプロシウムである請求項1又は2記載の希土類金属の回収方法。
- 陽極として、粗希土類金属又は希土類合金を用い、該陽極から、ジアルキルスルホン溶液中に少なくとも希土類金属イオンを供給しつつ電解を行うことを特徴とする請求項1乃至4のいずれか1項に記載の希土類金属の回収方法。
- 陽極がネオジム磁性物である請求項5記載の希土類金属の回収方法。
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JP6090737B2 true JP6090737B2 (ja) | 2017-03-08 |
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Families Citing this family (2)
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CN103469251A (zh) * | 2013-08-26 | 2013-12-25 | 李戈登 | 一种稀土元素全分离的新工艺 |
KR101684266B1 (ko) | 2015-03-30 | 2016-12-08 | 충남대학교산학협력단 | 전해제련법을 이용한 네오디뮴금속 회수장치 |
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JPH0645913B2 (ja) * | 1989-05-25 | 1994-06-15 | 石原薬品株式会社 | 希土類金属のめっき液 |
JP5555842B2 (ja) * | 2010-10-15 | 2014-07-23 | 国立大学法人横浜国立大学 | 鉄族元素及び希土類元素のイオン液体を利用した回収方法、並びに鉄族元素及び希土類元素の回収装置 |
JP2013204126A (ja) * | 2012-03-29 | 2013-10-07 | Hitachi Metals Ltd | 希土類元素の電解還元析出方法 |
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