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    PROCESSES FOR PREPARING LITHIUM CARBONATE
    12.
    发明申请
    PROCESSES FOR PREPARING LITHIUM CARBONATE 有权

    公开(公告)号：US20160368780A1

    公开(公告)日：2016-12-22

    申请号：US15190296

    申请日：2016-06-23

    Applicant: Nemaska Lithium Inc.

    Inventor： Guy BOURASSA ,  Gary PEARSE ,  Stephen Charles MACKIE ,  Mykolas GLADKOVAS

    IPC: C01D15/08 ,  C25B15/08 ,  C25B1/16

    CPC classification number: C01D15/08 ,  C25B1/16 ,  C25B15/08

    Abstract: There are provided methods for preparing lithium carbonate. For example, such methods can comprise reacting an aqueous composition comprising lithium hydroxide with CO2 by sparging the CO2 the said composition, thereby obtaining a precipitate comprising the lithium carbonate. The methods can also comprise inserting at least a portion of the precipitate into a clarifier and obtaining a supernatant comprising lithium bicarbonate and a solid comprising the lithium carbonate, separating the solid from the supernatant; and heating the supernatant at a desired temperature so as to at least partially convert the lithium bicarbonate into lithium carbonate.

    PROCESSES AND SYSTEMS FOR PREPARING LITHIUM HYDROXIDE
    13.
    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。

    PROCESSES FOR PREPARING LITHIUM CARBONATE
    14.
    发明申请
    PROCESSES FOR PREPARING LITHIUM CARBONATE 有权

    公开(公告)号：US20250100894A1

    公开(公告)日：2025-03-27

    申请号：US18904024

    申请日：2024-10-01

    Applicant: NEMASKA LITHIUM INC.

    Inventor： Guy BOURASSA ,  Gary PEARSE ,  Stephen Charles MACKIE ,  Mykolas GLADKOVAS

    IPC: C01D15/08 ,  C25B1/16 ,  C25B15/08

    Abstract: There are provided methods for preparing lithium carbonate. For example, such methods can comprise reacting an aqueous composition comprising lithium hydroxide with CO2 by sparging the CO2 the said composition, thereby obtaining a precipitate comprising the lithium carbonate. The methods can also comprise inserting at least a portion of the precipitate into a clarifier and obtaining a supernatant comprising lithium bicarbonate and a solid comprising the lithium carbonate, separating the solid from the supernatant; and heating the supernatant at a desired temperature so as to at least partially convert the lithium bicarbonate into lithium carbonate.

    METHODS FOR TREATING LITHIUM-CONTAINING MATERIALS
    17.
    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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