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    PROCESSES FOR PREPARING HYDROXIDES AND OXIDES OF VARIOUS METALS AND DERIVATIVES THEREOF
    41.
    发明申请
    PROCESSES FOR PREPARING HYDROXIDES AND OXIDES OF VARIOUS METALS AND DERIVATIVES THEREOF 有权

    公开(公告)号：US20220242746A1

    公开(公告)日：2022-08-04

    申请号：US17613481

    申请日：2020-05-22

    Applicant: NEMASKA LITHIUM INC.

    Inventor： Thomas BIBIENNE ,  Nicolas LAROCHE ,  Jean-François MAGNAN ,  Guy BOURASSA ,  Mathieu CHARBONNEAU ,  Mickaël DOLLÉ ,  David DEAK

    IPC: C01G53/00 ,  C01G1/02 ,  C01G51/04 ,  C01G51/00 ,  C01D15/02 ,  B01D61/42

    Abstract: There are provided processes for preparing a metal hydroxide comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium, copper, magnesium and aluminum, the process comprising: reacting a metal sulfate comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium, copper, magnesium and aluminum with lithium hydroxide, sodium hydroxide and/or potassium hydroxide and optionally a chelating agent in order to obtain a solid comprising the metal hydroxide and a liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate; separating the liquid and the solid from one another to obtain the metal hydroxide; submitting the liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate to an electromembrane process for converting the lithium sulfate, sodium sulfate and/or potassium sulfate into lithium hydroxide, sodium hydroxide and/or potassium hydroxide respectively; reusing the sodium hydroxide obtained by the electromembrane process for reacting with the metal sulfate; and reusing the lithium hydroxide obtained by the electromembrane process for reacting with the metal sulfate and/or with the metal hydroxide.

    Processes and systems for preparing lithium hydroxide
    46.
    发明授权
    Processes and systems for preparing lithium hydroxide 有权

    公开(公告)号：US10036094B2

    公开(公告)日：2018-07-31

    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 ,  B01D61/42

    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.

    METHODS FOR TREATING LITHIUM-CONTAINING MATERIALS
    47.
    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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