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    PROCESSES FOR PREPARING HYDROXIDES AND OXIDES OF VARIOUS METALS AND DERIVATIVES THEREOF
    1.
    发明申请
    PROCESSES FOR PREPARING HYDROXIDES AND OXIDES OF VARIOUS METALS AND DERIVATIVES THEREOF 有权

    公开(公告)号：US20220002168A1

    公开(公告)日：2022-01-06

    申请号：US17477553

    申请日：2021-09-17

    Applicant: NEMASKA LITHIUM INC.

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

    IPC: C01G53/04 ,  B01D61/44 ,  C01D1/28 ,  C01D15/02 ,  C01G51/04 ,  C01G51/00 ,  C01G53/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/54

    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 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 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.

    ALUMINOSILICATES, RELATED PROCESSES AND USES THEREOF AS SUPPLEMENTARY CEMENTING MATERIALS
    7.
    发明申请
    ALUMINOSILICATES, RELATED PROCESSES AND USES THEREOF AS SUPPLEMENTARY CEMENTING MATERIALS 有权

    公开(公告)号：US20220324755A1

    公开(公告)日：2022-10-13

    申请号：US17628558

    申请日：2019-11-27

    Applicant: NEMASKA LITHIUM INC.

    Inventor： Jean-François MAGNAN ,  David-Nicolas ALLEN

    IPC: C04B7/32 ,  C04B11/30

    Abstract: The present disclosure concerns an aluminosilicate having a Blaine fineness of about 500 m2/kg to about 3000 m2/kg and/or a specific surface area of about 4 m2/g to about 20 m2/g, as well as the uses thereof. The present disclosure also comprises a dry cementing composition and a mortar or concrete composition, the compositions comprising said aluminosilicate. The present disclosure also comprises a process for the manufacture of aluminosilicate. The process comprises: roasting a spodumene concentrate in an acid medium; leaching the acidic roast spodumene concentrate so as to obtain a mixture comprising a solid comprising the aluminosilicate and a leachate; and separating the aluminosilicate from the leachate in an acid medium, wherein said aluminosilicate contains a calcium concentration of less than about 5%.

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