利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

69 条记录 (耗时 0.022 秒)

    RARE EARTH ELEMENT RECOVERY METHOD
    1.
    发明申请
    RARE EARTH ELEMENT RECOVERY METHOD 有权
    稀土元素回收方法

    公开(公告)号：US20140283652A1

    公开(公告)日：2014-09-25

    申请号：US14363676

    申请日：2012-12-07

    申请人： NIPPON LIGHT METAL COMPANY, LTD.

    发明人： Kaoru Sugita ,  Yuji Ota ,  Yoshihiro Taguchi ,  Satoshi Takeda

    IPC分类号： C22B59/00

    CPC分类号： C22B59/00 ,  B09B3/0016 ,  C22B3/0067 ,  C22B3/06 ,  C22B3/065 ,  C22B3/10 ,  Y02P10/234

    摘要： Provided is a method of recovering rare-earth elements, including causing rare-earth elements particularly including Nd and Dy to leach efficiently from a raw material for leaching which contains the rare-earth elements, and separating and recovering the rare-earth elements. The method of recovering rare-earth elements includes: a leaching step including performing leaching treatment of rare-earth elements in which an acidic slurry of a raw material for leaching which contains the rare-earth elements is held under a predetermined condition, and then subjecting the slurry obtained after the leaching treatment to solid-liquid separation, yielding a leachate containing the rare-earth elements; and a separation step of separating and recovering the rare-earth elements from the yielded leachate, in which: the raw material for leaching contains Ca as CaO at a ratio of 4 to 15 mass % and Ti as TiO2 at a ratio of 2 to 13 mass % in a solid component (S); an acid aqueous solution is an acid aqueous solution of hydrochloric acid and/or nitric acid; and the leaching treatment performed in the leaching step is digestion or maceration which is performed under the heating and pressurizing conditions of a temperature of 160 to 300° C. and a pressure of 0.65 to 10 MPa, and the rare-earth elements are caused to leach together with Ca in the leaching step.

    摘要翻译： 提供一种回收稀土元素的方法，包括使特别包括Nd和Dy的稀土元素从含有稀土元素的浸出原料中有效地浸出，并分离和回收稀土元素。 回收稀土元素的方法包括：浸出步骤，包括进行稀土元素的浸出处理，其中将含有稀土元素的浸出原料的酸性浆料保持在预定条件下，然后 在浸出处理后获得的浆液进行固液分离，产生含有稀土元素的渗滤液; 以及从所得到的浸出液中分离回收稀土元素的分离工序，其中：浸出原料中含有Ca为CaO，比例为4〜15质量％，Ti为TiO 2，比例为2〜13 固体组分（S）中的质量％; 酸性水溶液是盐酸和/或硝酸的酸性水溶液; 并且在浸出步骤中进行的浸出处理是在160〜300℃的温度和0.65〜10MPa的加热加压条件下进行的消化或浸渍，并且使稀土元素 在浸出步骤中与Ca一起浸出。

    Use of hydrocarbon-soluble aminomethylene phosphonic acid derivatives in the solvent extraction of iron ions from aqueous solutions
    2.
    发明授权
    Use of hydrocarbon-soluble aminomethylene phosphonic acid derivatives in the solvent extraction of iron ions from aqueous solutions 失效
    使用烃溶性氨基亚甲基膦酸衍生物在溶剂中从水溶液中提取铁离子

    公开(公告)号：US5795482A

    公开(公告)日：1998-08-18

    申请号：US750984

    申请日：1997-01-08

    申请人： Michael Ehle ,  Knut Oppenlander

    发明人： Michael Ehle ,  Knut Oppenlander

    IPC分类号： C09K3/00 ,  C07F9/38 ,  C22B3/26 ,  C22B3/28 ,  C22B3/32 ,  C22B3/38 ,  C22B15/14 ,  C22B19/32 ,  C22B3/40 ,  C22B3/42

    CPC分类号： C22B3/0067 ,  C07F9/3808 ,  C22B3/0009 ,  C22B3/0014 ,  C22B3/0024 ,  C22B3/0043 ,  Y02P10/234 ,  Y10S210/911

    摘要： Hydrocarbon-soluble aminomethylenephosphonic acid derivatives comprising the structural element of the formula I ##STR1## where R.sup.1 and R.sup.2 are hydrogen, C.sub.1 -C.sub.30 -alkyl which can additionally bear up to 15 hydroxyl groups and/or be interrupted by up to 14 non-adjacent oxygen atoms, C.sub.2 -C.sub.30 -alkenyl, C.sub.7 -C.sub.18 -aralkyl or C.sub.6 -C.sub.14 -aryl which may be substituted by up to three C.sub.1 -C.sub.12 -alkyl groups, C.sub.1 -C.sub.12 -alkoxy groups, halogen atoms, cyano groups, hydroxyl groups or C.sub.1 -C.sub.4 -alkoxycarbonyl groups, for the solvent extraction of iron ions from aqueous solutions.

    摘要翻译： PCT No.PCT / EP95 / 02327 Sec。 371日期1996年1月8日 102（e）日期1996年1月8日PCT归档1995年6月16日PCT公布。 公开号WO96 / 00309 日期1996年1月4日含有式I的结构元素的水溶性氨基亚甲基膦酸衍生物（Ⅰ）其中R1和R2是氢，C1-C30-烷基，其还能够承载多达15个羟基和/或 被多达14个不相邻氧原子间隔的C2-C30-烯基，C7-C18-芳烷基或C6-C14-芳基，其可被至多三个C1-C12-烷基取代，C1-C12-烷氧基， 卤素原子，氰基，羟基或C 1 -C 4 - 烷氧基羰基，用于从水溶液中萃取铁离子。

    Iron or aluminum precipitation in strong acid systems
    4.
    发明授权
    Iron or aluminum precipitation in strong acid systems 失效
    铁或铝在强酸体系中析出

    公开(公告)号：US4758414A

    公开(公告)日：1988-07-19

    申请号：US67914

    申请日：1987-06-30

    申请人： Dennis R. Gifford ,  Marvin L. Dettloff

    发明人： Dennis R. Gifford ,  Marvin L. Dettloff

    IPC分类号： C01F7/00 ,  C01G49/00 ,  C22B3/38 ,  C22B21/00

    CPC分类号： C22B3/0075 ,  C01F7/00 ,  C01G49/0009 ,  C22B3/0067 ,  C22B3/0071 ,  Y02P10/234 ,  Y10S423/02

    摘要： The precipitation of iron and aluminum from their solutions in strong acids, eg. 18% HCl and 25% H.sub.2 SO.sub.4, is accomplished by adding to the acid solution certain organic aminophosphonic acids in which at least 50% of the amine hydrogens have been substituted with methylenephosphonic acid groups. Particularly preferred compounds are the methylenephosphonic acid derivatives of ammonia and polyalkylenepolyaminepoly(methylenephosphonic acids). The completely phosphonomethylated derivatives are most preferred.

    摘要翻译： 铁和铝从强酸中的溶液中沉淀出来， 18％HCl和25％H 2 SO 4是通过向酸性溶液中加入某些有机氨基膦酸，其中至少50％的胺氢被亚甲基膦酸基取代。 特别优选的化合物是氨和聚亚烷基多氨基聚（亚甲基膦酸）的亚甲基膦酸衍生物。 完全膦酰基甲基化的衍生物是最优选的。

    Process for separation of neptunium from an organic phase in the recovery of irradiated fuel and/or fertile materials
    5.
    发明授权
    Process for separation of neptunium from an organic phase in the recovery of irradiated fuel and/or fertile materials 失效
    在回收照射的燃料和/或可食用材料时将有机相与有机相分离的方法

    公开(公告)号：US4659551A

    公开(公告)日：1987-04-21

    申请号：US649009

    申请日：1984-09-10

    申请人： Zdenek Kolarik ,  Robert Schuler

    发明人： Zdenek Kolarik ,  Robert Schuler

    IPC分类号： C01G56/00 ,  C22B3/38 ,  C22B60/02 ,  G21C19/46

    CPC分类号： C01G56/001 ,  C22B3/0044 ,  C22B3/0052 ,  C22B3/0066 ,  C22B3/0067 ,  C22B3/0068 ,  C22B60/026 ,  G21C19/46 ,  Y02P10/234 ,  Y02W30/883

    摘要： A process for the separation of neptunium from an organic phase, which is developed in the recovery of irradiated nuclear fuel and/or fertile material. The organic phase contains uranium-, plutonium- and neptunium ions, tritium in the form of tritiated water and fission products in ionic form, as well as an organic extraction agent dissolved in diluent. After a first wash step, and before the organic phase is further fed to a uranium-plutonium separation or to a uranium-plutonium coreextraction, the organic phase is brought into contact with an aqueous solution containing diluted HNO.sub.3, butyraldehyde and a low concentration of sulfamic acid in countercurrent flow as a second wash step for the selective reduction of Np (VI) to Np (V) and for selective stripping of Np (V), with respect to U and Pu, from the organic into an aqueous phase. The resulting aqueous phase charged with Np (V) and with portions of tritium and fission products is brought into contact with a solution of fresh extraction agent solution having a flow which corresponds to from 1/13.3 to 1/3.3 of the flow of the organic phase coming from the first wash step and to be decontaminated, to assure the selectivity of the stripping of Np (V) in reference to U and Pu. The aqueous phase resulting from this step and containing Np (V), T and fission products is then separated from the solution of fresh extraction agent.

    摘要翻译： 一种从有机相中分离ium的方法，该方法是在回收照射的核燃料和/或可食用材料时开发的。 有机相包含铀，钚和ium离子，以氚化水和离子形式的裂变产物形式的氚以及溶解在稀释剂中的有机萃取剂。 在第一洗涤步骤之后，在有机相进一步加入铀 - 钚分离或铀 - 钚冷萃取之前，将有机相与含有稀释的HNO 3，丁醛和低浓度氨基磺酸的水溶液接触 酸作为第二洗涤步骤，用于将Np（VI）选择性还原为Np（V），并将Np（V）相对于U和Pu从有机转化为水相。 将所得的带有Np（V）的水相和部分氚和裂变产物与新鲜萃取剂溶液的溶液接触，该溶液具有对应于有机物流的1 / 13.3至1 / 3.3的流量 相来自第一洗涤步骤并进行净化，以确保提取Np（V）的U和Pu的选择性。 从该步骤得到的含有Np（V），T和裂变产物的水相然后从新鲜提取剂的溶液中分离出来。

    Process for the production of lead from sulphide ores
    6.
    发明授权
    Process for the production of lead from sulphide ores 失效
    从硫化矿石生产铅的工艺

    公开(公告)号：US4634507A

    公开(公告)日：1987-01-06

    申请号：US783471

    申请日：1985-10-03

    申请人： Eduardo D. Nogueira ,  Enrique H. Tezanos

    发明人： Eduardo D. Nogueira ,  Enrique H. Tezanos

    IPC分类号： C01G9/00 ,  C22B3/28 ,  C22B3/38 ,  C25B1/26 ,  C25C1/14 ,  C25C1/16

    CPC分类号： C25C1/16 ,  C01G9/003 ,  C22B13/04 ,  C22B3/0012 ,  C22B3/0067 ,  C25B1/26 ,  Y02P10/234

    摘要： The process for production of lead from lead sulphide ores involves leaching the ores with a ferric chloride solution, at a temperature from about 70.degree. C. to 105.degree. C., at a pH of from about 4.0 to 0.5, recovering the lead by cementation with metallic zinc, recovering the resultant zinc chloride by solvent extraction, and electrowinning zinc metal from the zinc chloride solution. Chlorine is also electrolytically produced for regenerating ferric chloride for the leaching step.

    摘要翻译： 用于从硫化铅矿石生产铅的方法包括用氯化铁溶液在约70℃至105℃的温度下，在约4.0至0.5的pH下浸出矿石，通过胶结回收铅 用金属锌，通过溶剂萃取回收得到的氯化锌，并从氯化锌溶液中电解锌金属。 氯也用于再生三氯化铁用于浸出步骤。