JP2019203189A - 希土類磁石を製造するための出発材料を生産する方法及びプラント - Google Patents
希土類磁石を製造するための出発材料を生産する方法及びプラント Download PDFInfo
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Abstract
Description
ZP 粉末状中間製品
F1,F1-1,F1-2 第1フラクション
F2,F2-1,F2-2 第2フラクション
AM 出発材料
Claims (20)
- 希土類磁石を製造するための粉末状出発材料(AM)の生産方法であって、
・少なくとも1種の磁性材料(М)及び/又は低濃度の不純物を含む希土類金属を含有する少なくとも1種の合金を準備するステップを含み、
・前記準備した少なくとも1種の磁性材料(М)及び/又は希土類金属を含有すると共に前記準備した少なくとも1種の合金を粉砕するステップを含み、前記少なくとも1種の磁性材料(М)及び/又は希土類金属を含有する前記少なくとも1種の合金から、粉末状中間製品(ZP)を生成し、前記粉末状中間製品(ZP)が、前記準備した少なくとも1種の磁性材料(М)及び/又は希土類金属を含有すると共に前記準備した少なくとも1種の合金よりも高濃度の不純物を含む場合があり、
・前記粉末状中間製品(ZP)を、少なくとも1つの基準に従って分級するステップを含み、前記粉末状中間製品(ZP)を分級するために、不純物を含む前記粉末状中間製品(ZP)を、前記少なくとも1つの基準に基づいて少なくとも2つのフラクション(F1,F2)に分割する少なくとも1個の動的分級機を設け、
第1フラクション(F1)に、少なくとも高濃度の不純物が蓄積し、第2フラクション(F2)に、不純物が蓄積しないか又は前記第1フラクション(F1)よりも低濃度の不純物が蓄積し、
不純物を含まないか又は低濃度の不純物を含む前記フラクションが、希土類磁石を製造するための前記出発材料(AM)を形成する方法。 - 請求項1に記載の方法であって、前記少なくとも1つの基準を、粒径又は粒子密度などとして規定する方法。
- 請求項1又は2に記載の方法であって、高濃度の不純物を含む前記第1フラクション(F1)を、小さな粒径で形成し、不純物を含まないか又は低濃度の不純物を含む前記第2フラクション(F2)を、前記第1フラクション(F1)よりも大きな粒径で形成する方法。
- 請求項1〜3の何れか一項に記載の方法であって、前記粉末状中間製品(ZP)、特に不純物を含まないか又は低濃度の不純物を含む前記第2フラクション(F2)を、動的分離機によって繰り返し分級し、分級毎に少なくとも2つのフラクション(F1,F2)に分割する方法。
- 請求項1〜4の何れか一項に記載の方法であって、前記粉末状中間製品(ZP)を前記少なくとも2つのフラクション(F1,F2)に分級することにより、前記第2フラクション(F2)中における不純物濃度が、前記第1フラクション(F1)に比べて、少なくとも4分の1〜少なくとも4分の3以上に低減し、場合によっては完全に低減する方法。
- 請求項1〜5の何れか一項に記載の方法であって、前記少なくとも1種の磁性材料(М)及び/又は希土類金属を含有する前記少なくとも1種の合金を、生産された前記粉末状中間製品(ZP)が粗粉末又は微粉末になるよう粉砕する方法。
- 請求項1〜6の何れか一項に記載の方法であって、分級工程を、前記動的分級機により、粗粉末又は微粉末に対して少なくとも1回実施する方法。
- 請求項1又は2に記載の方法であって、高濃度の不純物を含む前記第1フラクション(F1)を、小さな粒径で形成し、不純物を含まないか又は低濃度の不純物を含む前記第2フラクション(F2)を、前記第1フラクション(F1)よりも大きな粒径で形成する方法。
- 請求項1〜3の何れか一項に記載の方法であって、前記粉末状中間製品(ZP)、特に不純物を含まないか又は低濃度の不純物を含む前記第2フラクション(F2)を、動的分離機によって繰り返し分級し、分級毎に少なくとも2つのフラクション(F1,F2)に分割する方法。
- 請求項1〜4の何れか一項に記載の方法であって、前記粉末状中間製品(ZP)を前記少なくとも2つのフラクション(F1,F2)に分級することにより、前記第2フラクション(F2)中における不純物濃度が、前記第1フラクション(F1)に比べて、少なくとも4分の1〜少なくとも4分の3以上に低減し、場合によっては完全に低減する方法。
- 請求項1〜5の何れか一項に記載の方法であって、前記少なくとも1種の磁性材料(М)及び/又は希土類金属を含有する前記少なくとも1種の合金を、生産された前記粉末状中間製品(ZP)が粗粉末又は微粉末になるよう粉砕する方法。
- 請求項1〜6の何れか一項に記載の方法であって、分級工程を、前記動的分級機により、粗粉末又は微粉末に対して少なくとも1回実施する方法。
- 請求項1〜7の何れか一項に記載の方法であって、少なくとも1種の保護ガスを、前記少なくとも1個の動的分級機に供給することにより、前記粉末状中間製品(ZP)を保護ガス雰囲気下で少なくとも2つのフラクション(F1,F2)に分割する方法。
- 請求項1〜8の何れか一項に記載の方法であって、固体状態、液体状態、又は気体状態の少なくとも1種の添加剤を、粉砕前又は粉砕中に、前記準備した少なくとも1種の磁性材料(М)及び/又は希土類金属を含有すると共に前記準備した少なくとも1種の合金に供給する方法。
- 特に請求項1に係る方法に従って生産された、希土類磁石を製造するための粉末状出発材料(AM)の生産プラントであって、
・少なくとも1種の磁性材料(М)及び/又は希土類金属を含有する少なくとも1種の合金を粉砕することにより、低濃度の不純物を含む粉末状中間製品(ZP)を生産する少なくとも1個の粉砕装置と、
・少なくとも1つの基準に従って、前記粉末状中間製品(ZP)を分級するよう構成された少なくとも1個の分離装置とを備え、
前記少なくとも1個の分離装置が、前記少なくとも1つの基準に基づいて、不純物を含む前記粉末状中間製品(ZP)を少なくとも2つのフラクション(F1,F2)に分割可能な動的分級機によって構成され、
第1フラクション(F1)が、高濃度の不純物を含み、第2フラクション(F2)が、不純物を含まないか又は前記第1フラクション(F1)よりも低濃度の不純物を含み、
不純物を含まないか又はより低濃度の不純物を含む前記第2フラクション(F2)が、希土類磁石を製造するための出発材料(AM)を形成するプラント。 - 請求項10に記載のプラントであって、前記少なくとも1個の分離装置が、前記プラント内に統合された少なくとも1個の動的分級機を含むプラント。
- 請求項10又は11に記載のプラントであって、前記少なくとも1個の分離装置が、前記プラントに対して別箇の構成要素として構成された少なくとも1個の動的分級機を含み、分級されるべき前記粉末状中間製品が前記動的分級機に供給されるプラント。
- 請求項10〜12の何れか一項に記載のプラントであって、前記動的分級機に少なくとも1種の保護ガスが供給され、これにより少なくとも1つの基準に基づく分級工程が保護ガス雰囲気下で行われるプラント。
- 請求項10〜13の何れか一項に記載のプラントであって、固体状態、液体状態、又は気体状態の少なくとも1種の添加剤が、前記少なくとも1個の粉砕装置に供給可能であるプラント。
- 請求項10〜14の何れか一項に記載のプラントであって、前記不純物が、非金属物質及び/又はその化合物、特に、酸素、炭素、窒素、及び/又は、水素を含むプラント。
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DE102018112406.6A DE102018112406A1 (de) | 2018-05-24 | 2018-05-24 | Verfahren und Anlage zur Herstellung eines Ausgangsmaterials für die Herstellung von Seltenerd-Magneten |
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DE102013101517A1 (de) * | 2013-02-15 | 2014-08-21 | Thyssenkrupp Resource Technologies Gmbh | Sichter und Verfahren zum Betreiben eines Sichters |
DE102013205408A1 (de) | 2013-03-27 | 2014-10-16 | Siemens Aktiengesellschaft | Verfahren zur Abtrennung von Seltenerdmetallpartikeln aus einem Seltenerdmetalle enthaltenden Gemenge |
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DE102017116272A1 (de) * | 2017-07-19 | 2019-01-24 | Netzsch Trockenmahltechnik Gmbh | Verfahren und anlage zur herstellung eines ausgangsmaterials für die herstellung von seltenerdmagneten |
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JPH0354806A (ja) * | 1989-07-24 | 1991-03-08 | Shin Etsu Chem Co Ltd | 希土類永久磁石の製造方法 |
JPH07283058A (ja) * | 1994-04-14 | 1995-10-27 | Citizen Watch Co Ltd | 異方性希土類ボンド磁石およびその製造方法 |
JP2002208509A (ja) * | 2000-11-08 | 2002-07-26 | Sumitomo Special Metals Co Ltd | 希土類磁石およびその製造方法 |
JP2011216727A (ja) * | 2010-03-31 | 2011-10-27 | Nitto Denko Corp | 永久磁石及び永久磁石の製造方法 |
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US11311933B2 (en) | 2022-04-26 |
EP3572170A1 (de) | 2019-11-27 |
RU2730314C1 (ru) | 2020-08-21 |
US20190358703A1 (en) | 2019-11-28 |
DE102018112406A1 (de) | 2019-11-28 |
JP6907260B2 (ja) | 2021-07-21 |
KR102194529B1 (ko) | 2020-12-23 |
CN110523996A (zh) | 2019-12-03 |
KR20190134487A (ko) | 2019-12-04 |
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