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    Membrane hydro-metallurgical extraction process
    1.
    发明授权
    Membrane hydro-metallurgical extraction process 失效
    膜水力冶金提取工艺

    公开(公告)号：US3957504A

    公开(公告)日：1976-05-18

    申请号：US522826

    申请日：1974-11-11

    申请人： Win-Sow Ho ,  Lester T. C. Lee ,  Kang-Jen Liu

    发明人： Win-Sow Ho ,  Lester T. C. Lee ,  Kang-Jen Liu

    IPC分类号： C22B3/00 ,  B01D61/24 ,  C01G3/00 ,  C02F1/62 ,  C22B3/20 ,  C22B3/26 ,  C22B3/42 ,  C22B60/02 ,  C30B7/00 ,  C22B15/08

    CPC分类号： C22B60/026 ,  B01D61/246 ,  B01D63/02 ,  C01G3/003 ,  C22B3/0005 ,  Y02P10/234

    摘要： A system utilizing membrane extraction is provided to recover metal values. The system may be used to separate metal ions from an aqueous solution through the membrane by an organic liquid containing a chelating agent. This invention also contemplates the recovery of metal values from an organic phase, containing the metal complexed with a chelating agent, by an aqueous phase using membrane extraction. In the former case, the metal ion is passed through the membrane from the aqueous phase to the organic phase where it forms a complex with a chelating agent present in the organic phase. In the latter case the metal is extracted from the organic phase into the aqueous phase through the membrane. In both cases a chelating exchange reaction is involved at the interface between the membrane and one of the two phases. This hydro-metallurgical process employs membranes with metal ion diffusivity in the range of about 10.sup..sup.-5 to about 10.sup..sup.-8 cm.sup.2 /sec. and has advantages over conventional metal extractions and may be applied as the mechanism is pollutant removal and recovery as well as for metallurgical separations.

    摘要翻译： 提供利用膜提取的系统来回收金属值。 该系统可用于通过含有螯合剂的有机液体将金属离子与水溶液分离通过膜分离。 本发明还考虑通过使用膜萃取的水相从含有与螯合剂络合的金属的有机相中回收金属值。 在前一种情况下，金属离子通过膜从水相到有机相，其中与有机相中存在的螯合剂形成络合物。 在后一种情况下，金属通过膜从有机相中提取到水相中。 在这两种情况下，螯合交换反应涉及膜与两相之一的界面。 该水力冶金方法使用金属离子扩散率在约10 -5至约10 -8 cm 2 / sec范围内的膜。 并且具有优于常规金属萃取的优点，并且可以应用于机理是污染物去除和回收以及用于冶金分离。

    Novel high diffusivity membranes
    2.
    发明授权
    Novel high diffusivity membranes 失效
    新型高扩散膜

    公开(公告)号：US3951789A

    公开(公告)日：1976-04-20

    申请号：US405389

    申请日：1973-10-11

    申请人： Lester T. C. Lee ,  Win-Sow Ho ,  Kang-Jen Liu

    发明人： Lester T. C. Lee ,  Win-Sow Ho ,  Kang-Jen Liu

    IPC分类号： C08G69/00 ,  B01D53/22 ,  B01D61/00 ,  B01D71/56 ,  C08G69/26 ,  C08J5/22 ,  B01D31/00 ,  B01D13/00

    CPC分类号： B01D71/56 ,  C08G69/26

    摘要： Novel membrane compositions are prepared from polymers comprising tertiary amine containing polyamideamine functional groups. The membranes are durable, highly selective and have excellent homogeneity and high diffusivity. Asymmetric membranes can be prepared by solution casting or melt processing techniques can be used to produce homogeneous, high performance, symmetric membranes. The specific compositions of the membranes can be adjusted so as to achieve a membrane possessing a required degree of hydrophilicity and porosity. These membranes may be used in a variety of separation applications, particularly in two-phase solvent extraction.

    摘要翻译： 由含有叔胺的聚酰胺胺官能团的聚合物制备新的膜组合物。 膜是耐久的，高度选择性的并且具有优异的均匀性和高扩散性。 不对称膜可以通过溶液浇铸或熔融加工技术制备，可用于生产均匀，高性能的对称膜。 可以调节膜的具体组成以获得具有所需程度的亲水性和孔隙率的膜。 这些膜可用于各种分离应用，特别是在两相溶剂萃取中。