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    PROCESSES AND SYSTEMS FOR PREPARING LITHIUM CARBONATE
    2.
    发明申请
    PROCESSES AND SYSTEMS FOR PREPARING LITHIUM CARBONATE 审中-公开
    制备碳酸锂的方法和系统

    公开(公告)号：US20160265085A1

    公开(公告)日：2016-09-15

    申请号：US15031746

    申请日：2014-10-23

    Applicant: NEMASKA LITHIUM INC.

    Inventor： Guy BOURASSA ,  Gary PEARSE ,  Stephen Charles MACKIE ,  Mykolas GLADKOVAS ,  Peter SYMONS ,  David J. GENDERS ,  Jean-Frangois MAGNAN ,  Geneviève CLAYTON

    IPC: C22B26/12 ,  C22B3/44 ,  C22B4/02 ,  C25B1/16 ,  B01D61/42

    CPC classification number: C22B26/12 ,  B01D61/422 ,  B01D61/445 ,  B01D2311/2684 ,  C01B2203/0283 ,  C01D7/07 ,  C22B3/44 ,  C22B4/02 ,  C25B1/14 ,  C25B1/16 ,  C25B9/08 ,  C25B9/18 ,  Y02E60/366

    Abstract: There are provided processes comprising submitting an aqueous composition comprising lithium sulphate and/or bisulfate to an electrolysis or an electrodialysis for converting at least a portion of said sulphate into lithium hydroxide. During electrolysis or electrodialysis, the aqueous composition is at least substantially maintained at a pH having a value of about 1 to about 4; and converting said lithium hydroxide into lithium carbonate. Alternatively, lithium sulfate and/or lithium bisulfate can be submitted to a first electromembrane process that comprises a two-compartment membrane process for conversion of lithium sulfate and/or lithium bisulfate to lithium hydroxide, and obtaining a first lithium-reduced aqueous stream and a first lithium hydroxide-enriched aqueous stream; and submitting said first lithium-reduced aqueous stream to a second electromembrane process comprising a three-compartment membrane process to prepare at least a further portion of lithium hydroxide and obtaining a second lithium-reduced aqueous stream and a second lithium-hydroxide enriched aqueous stream.

    Abstract translation: 提供的方法包括将包含硫酸锂和/或硫酸氢盐的含水组合物递送到电解或电渗析中，以将至少一部分所述硫酸盐转化为氢氧化锂。 在电解或电渗析期间，水性组合物至少基本上保持在pH为约1至约4的pH; 并将所述氢氧化锂转化为碳酸锂。 或者，硫酸锂和/或硫酸氢锂可以进行第一电子过程，其包括用于将硫酸锂和/或硫酸氢锂转化为氢氧化锂的双室膜工艺，并获得第一锂还原水流和 第一个富含氢氧化锂的水流; 以及将所述第一锂还原水流提交到包括三室膜方法的第二电解方法中，以制备至少另一部分氢氧化锂并获得第二锂还原水流和第二富含氢氧化锂的水流。

    PROCESSES AND SYSTEMS FOR PREPARING LITHIUM HYDROXIDE
    5.
    发明申请
    PROCESSES AND SYSTEMS FOR PREPARING LITHIUM HYDROXIDE 审中-公开
    制备氢氧化锂的方法和系统

    公开(公告)号：US20160258071A1

    公开(公告)日：2016-09-08

    申请号：US15031589

    申请日：2014-10-23

    Applicant: NEMASKA LITHIUM INC.

    Inventor： Jean-François MAGNAN ,  Guy BOURASSA ,  Gary PEARSE ,  Peter SYMONS ,  David J. GENDERS ,  Geneviève CLAYTON

    IPC: C25B1/16 ,  C25B9/08 ,  C25B9/18

    CPC classification number: C25B1/16 ,  B01D61/422 ,  B01D2311/2684 ,  C25B9/08 ,  C25B9/18

    Abstract: There are provided processes for preparing lithium hydroxide. The processes comprise submitting an aqueous composition comprising lithium sulfate and/or lithium bisulfate to a first electromembrane process that comprises a two-compartment membrane process under suitable conditions for conversion of the lithium sulfate and/or lithium bisulfate to lithium hydroxide, and obtaining a first lithium-reduced aqueous stream and a first lithium hydroxide-enriched aqueous stream; and submitting the first lithium-reduced aqueous stream to a second electromembrane process that comprises a three-compartment membrane process under suitable conditions to prepare at least a further portion of lithium hydroxide and obtaining a second lithium-reduced aqueous stream and a second lithium-hydroxide enriched aqueous stream. There are also provided systems for preparing lithium hydroxide.

    Abstract translation: 提供了制备氢氧化锂的方法。 所述方法包括将包含硫酸锂和/或硫酸氢锂的水性组合物提交到第一电子过程中，所述第一电子过程包括在用于将硫酸锂和/或硫酸氢锂转化为氢氧化锂的合适条件下的双室膜工艺，并获得第一 锂还原水流和第一富含氢氧化锂的水流; 以及将第一锂还原的水流提供到第二电磁过程，其在合适的条件下包括三室膜工艺以制备至少另一部分氢氧化锂并获得第二锂还原水流和第二氢氧化锂 富集水流。 还提供了制备氢氧化锂的系统。

    METHODS FOR TREATING LITHIUM-CONTAINING MATERIALS
    8.
    发明申请
    METHODS FOR TREATING LITHIUM-CONTAINING MATERIALS 审中-公开
    用于处理含锂材料的方法

    公开(公告)号：US20170022617A1

    公开(公告)日：2017-01-26

    申请号：US15119472

    申请日：2015-02-24

    Applicant: NEMASKA LITHIUM INC.

    Inventor： Jean-François MAGNAN ,  Guy BOURASSA ,  Nicolas LAROCHE ,  Gary PEARSE ,  Stephen Charles MACKIE ,  Mykolas GLADKOVAS ,  Peter SYMONS ,  J. David GENDERS ,  Geneviève CLAYTON ,  Pierre BOUCHARD

    IPC: C25B1/16 ,  B01D61/42 ,  C01D15/06 ,  C22B1/02 ,  C22B3/08 ,  C01D15/02 ,  B01D61/02 ,  B01D61/58

    Abstract: The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process.

    Abstract translation: 本发明涉及从含锂材料中提取锂的方法。 例如，该方法可以包括在适于获得包含诸如硫酸锂和/或硫酸氢锂的锂化合物的水性组合物的条件下浸出焙烧的含锂材料。 包含硫酸锂和/或硫酸氢锂的水性组合物可以任选地用于例如包含电解质工艺的制备氢氧化锂的方法中。 焙烧的含锂材料可以例如通过使用包含任选的硫酸锂和/或硫酸氢锂的水性组合物的方法来制备，所述水性组合物可以由制备氢氧化锂的方法获得，所述方法包括电化学方法如两室 单极或双极电解过程。

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