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    METHOD FOR EXTRACTING AND SEPARATING RARE EARTH ELEMENTS
    1.
    发明申请
    METHOD FOR EXTRACTING AND SEPARATING RARE EARTH ELEMENTS 有权
    提取和分离稀土元素的方法

    公开(公告)号：US20100319491A1

    公开(公告)日：2010-12-23

    申请号：US12813698

    申请日：2010-06-11

    申请人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa ,  Hirochika Naganawa ,  Kojiro Shimojo

    发明人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa ,  Hirochika Naganawa ,  Kojiro Shimojo

    IPC分类号： C22B59/00

    CPC分类号： C22B59/00 ,  C22B3/0022 ,  Y02P10/234

    摘要： Solvent extraction from an aqueous phase containing first and second rare earth elements is carried out by contacting an organic phase containing a diglycolamic acid as an extractant and a hydrocarbon or a low-polar alcohol as a solvent, with the aqueous phase below pH 3 for extracting the first rare earth element into the organic phase, back-extracting from the organic phase with an aqueous acid solution for recovering the first rare earth element, and recovering the second rare earth element which has not been extracted into the organic phase and has remained in the aqueous phase.

    摘要翻译： 从含有第一和第二稀土元素的水相中的溶剂萃取通过使含有作为萃取剂的二甘醇酸的有机相和作为溶剂的烃或低极性醇接触，水相低于pH 3进行萃取 将第一稀土元素加入到有机相中，用用于回收第一稀土元素的酸性水溶液从有机相中回收，并回收未萃取到有机相中并保留在第二稀土元素中的第二稀土元素 水相。

    Method for extracting and separating rare earth elements
    2.
    发明授权
    Method for extracting and separating rare earth elements 有权
    稀土元素提取分​​离方法

    公开(公告)号：US08177881B2

    公开(公告)日：2012-05-15

    申请号：US12813698

    申请日：2010-06-11

    申请人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa ,  Hirochika Naganawa ,  Kojiro Shimojo

    发明人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa ,  Hirochika Naganawa ,  Kojiro Shimojo

    IPC分类号： C22B3/16 ,  C22B59/00

    CPC分类号： C22B59/00 ,  C22B3/0022 ,  Y02P10/234

    摘要： Solvent extraction from an aqueous phase containing first and second rare earth elements is carried out by contacting an organic phase containing a diglycolamic acid as an extractant and a hydrocarbon or a low-polar alcohol as a solvent, with the aqueous phase below pH 3 for extracting the first rare earth element into the organic phase, back-extracting from the organic phase with an aqueous acid solution for recovering the first rare earth element, and recovering the second rare earth element which has not been extracted into the organic phase and has remained in the aqueous phase.

    摘要翻译： 从含有第一和第二稀土元素的水相中的溶剂萃取通过使含有作为萃取剂的二甘醇酸的有机相和作为溶剂的烃或低极性醇接触，水相低于pH 3进行萃取 将第一稀土元素加入到有机相中，用用于回收第一稀土元素的酸性水溶液从有机相中回收，并回收未萃取到有机相中并保留在第二稀土元素中的第二稀土元素 水相。

    Method for extracting and separating light rare earth element
    3.
    发明授权
    Method for extracting and separating light rare earth element 有权
    轻稀土元素提取分​​离方法

    公开(公告)号：US08802040B2

    公开(公告)日：2014-08-12

    申请号：US13530672

    申请日：2012-06-22

    申请人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa

    发明人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa

    IPC分类号： C22B59/00

    CPC分类号： C01F17/0006 ,  C22B3/0022 ,  C22B59/00 ,  Y02P10/234

    摘要： A target light rare earth element is separated from an aqueous solution containing two or more of La, Ce, Pr and Nd by contacting an organic phase containing an extractant with the aqueous solution in a counter-current flow multistage mixer-settler while adding an alkaline solution thereto, and contacting the organic phase with an acid aqueous solution for back-extracting the target element. The extractant is a dialkyl diglycol amic acid having formula: R1R2NCOCH2OCH2COOH wherein R1 and R2 are alkyl, at least one having at least 6 carbon atoms.

    摘要翻译： 将含有萃取剂的有机相与逆流多级混合器 - 沉降器中的水溶液接触，同时加入碱性物质，将含有两种或多种La，Ce，Pr和Nd的水溶液与目标轻稀土元素分离。 并使有机相与酸性水溶液接触，用于反萃取目标元素。 萃取剂是具有式：R 1 R 2 NCOCH 2 OCH 2 COOH的二烷基二甘醇酰胺酸，其中R 1和R 2是烷基，至少有一个具有至少6个碳原子。

    METHOD FOR EXTRACTING AND SEPARATING LIGHT RARE EARTH ELEMENT
    4.
    发明申请
    METHOD FOR EXTRACTING AND SEPARATING LIGHT RARE EARTH ELEMENT 有权
    提取和分离轻稀土元素的方法

    公开(公告)号：US20120328493A1

    公开(公告)日：2012-12-27

    申请号：US13530672

    申请日：2012-06-22

    申请人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa

    发明人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa

    IPC分类号： C22B59/00

    CPC分类号： C01F17/0006 ,  C22B3/0022 ,  C22B59/00 ,  Y02P10/234

    摘要： A target light rare earth element is separated from an aqueous solution containing two or more of La, Ce, Pr and Nd by contacting an organic phase containing an extractant with the aqueous solution in a counter-current flow multistage mixer-settler while adding an alkaline solution thereto, and contacting the organic phase with an acid aqueous solution for back-extracting the target element. The extractant is a dialkyl diglycol amic acid having formula: R1R2NCOCH2OCH2COOH wherein R1 and R2 are alkyl, at least one having at least 6 carbon atoms.

    摘要翻译： 将含有萃取剂的有机相与逆流多级混合器 - 沉降器中的水溶液接触，同时加入碱性物质，将含有两种或多种La，Ce，Pr和Nd的水溶液与目标轻稀土元素分离。 并使有机相与酸性水溶液接触，用于反萃取目标元素。 萃取剂是具有式：R 1 R 2 NCOCH 2 OCH 2 COOH的二烷基二甘醇酰胺酸，其中R 1和R 2是烷基，至少有一个具有至少6个碳原子。

    Preparation of bonded rare earth magnet-forming alloy and bonded rare earth magnet composition
    6.
    发明授权
    Preparation of bonded rare earth magnet-forming alloy and bonded rare earth magnet composition 有权
    粘结稀土磁体成形合金和结合稀土磁体组合物的制备

    公开(公告)号：US06793742B2

    公开(公告)日：2004-09-21

    申请号：US10151096

    申请日：2002-05-21

    申请人： Kazuaki Sakaki ,  Koji Sato ,  Takahiro Hashimoto ,  Takehisa Minowa

    发明人： Kazuaki Sakaki ,  Koji Sato ,  Takahiro Hashimoto ,  Takehisa Minowa

    IPC分类号： H01F1055

    CPC分类号： H01F1/0551 ,  B22F2009/041 ,  B22F2998/00 ,  C22C1/0441 ,  H01F1/055 ,  H01F1/0558 ,  B22F9/04

    摘要： An alloy powder for bonded rare earth magnets is prepared by melting an alloy consisting essentially of 20-30 wt % of Sm or a mixture of rare earth elements (inclusive of Y) containing at least 50 wt % of Sm, 10-45 wt % of Fe, 1-10 wt % of Cu, 0.5-5 wt % of Zr, and the balance of Co, quenching the melt by a strip casting technique, to form a rare earth alloy strip containing at least 20% by volume of equiaxed crystals with a grain size of 1-200 &mgr;m and having a gage of 0.05-3 mm, and heat treating the strip in a non-oxidizing atmosphere at 1000-1300° C. for 0.5-20 hours, followed by aging treatment and grinding.

    摘要翻译： 通过熔融基本上由20-30重量％的Sm组成的合金或含有至少50重量％的Sm，10〜45重量％的Sm的稀土元素（包括Y）的混合物来制备用于粘结稀土磁体的合金粉末， 的Fe，1-10重量％的Cu，0.5-5重量％的Zr，余量为Co，通过带钢铸造技术淬火熔体，以形成含有至少20体积％等轴的稀土合金条 晶粒尺寸为1-200μm，表面积为0.05-3mm，并在非氧化性气氛中在1000-1300℃下热处理该条带0.5-20小时，然后进行时效处理和研磨 。