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公开(公告)号：US20210348285A1
公开(公告)日：2021-11-11
申请号：US17383436
申请日：2021-07-23
Applicant: NEMASKA LITHIUM INC.
Inventor： Jean-François MAGNAN , Guy BOURASSA , Gary PEARSE , Peter SYMONS , J. David GENDERS
Abstract: There are provided system for preparing lithium hydroxide from an aqueous composition comprising a lithium compound and use of the system thereof to prepare lithium hydroxide, the system comprising an electrochemical cell, a pH probe and at least one inlet for receiving acid or base for maintaining pH. For example, the lithium compound can be lithium sulphate and the aqueous composition can be at least substantially maintained at a pH having a value of about 2 to about 4.
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公开(公告)号：US20200087804A1
公开(公告)日：2020-03-19
申请号：US16579173
申请日：2019-09-23
Applicant: NEMASKA LITHIUM INC.
Inventor： Jean-François MAGNAN , Guy BOURASSA , Gary PEARSE , Peter SYMONS , J. David GENDERS
Abstract: There are provided processes for preparing lithium hydroxide that comprise submitting an aqueous composition comprising a lithium compound to an electrolysis or an electrodialysis under conditions suitable for converting at least a portion of the lithium compound into lithium hydroxide. For example, the lithium compound can be lithium sulphate and the aqueous composition can be at least substantially maintained at a pH having a value of about 1 to about 4.
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公开(公告)号：US20230416874A1
公开(公告)日：2023-12-28
申请号：US18213844
申请日：2023-06-25
Applicant: NEMASKA LITHIUM INC.
Inventor： Guy BOURASSA , Gary PEARSE , Stephen Charles MACKIE , Mykolas GLADKOVAS , Peter SYMONS , J. David GENDERS , Jean-François MAGNAN , Geneviève CLAYTON
IPC: C22B26/12 , B01D61/42 , C22B3/44 , C01D7/07 , C25B1/16 , B01D61/44 , C25B9/70 , C25B9/19 , C22B4/02 , C25B1/14
CPC classification number: C22B26/12 , B01D61/422 , C22B3/44 , C01D7/07 , C25B1/16 , B01D61/445 , C25B9/70 , C25B9/19 , C22B4/02 , C25B1/14 , Y02E60/36 , C01B2203/0283 , B01D2311/2684
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.
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公开(公告)号：US20190136392A1
公开(公告)日：2019-05-09
申请号：US16053796
申请日：2018-08-03
Applicant: Nemaska Lithium Inc.
Inventor： Guy BOURASSA , Gary PEARSE , Stephen Charles MACKIE , Mykolas GLADKOVAS , Peter SYMONS , J. David GENDERS , Jean-François MAGNAN
Abstract: There are provided methods for preparing lithium hydroxide. For example, such methods can comprise submitting an aqueous composition comprising a lithium compound to an electrolysis under conditions suitable for converting at least a portion of said lithium compound into lithium hydroxide. There are also provided methods for preparing lithium sulphate.
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公开(公告)号：US20170342573A1
公开(公告)日：2017-11-30
申请号：US15615280
申请日：2017-06-06
Applicant: Nemaska Lithium Inc.
Inventor： Guy BOURASSA , Gary PEARSE , Stephen Charles MACKIE , Mykolas GLADKOVAS , Peter SYMONS , J. David GENDERS , Jean-François MAGNAN
CPC classification number: C25B1/16 , B01D61/422 , B01D61/44 , C22B7/006 , C22B26/12
Abstract: There are provided methods for preparing lithium hydroxide. For example, such methods can comprise submitting an aqueous composition comprising a lithium compound to an electrolysis under conditions suitable for converting at least a portion of said lithium compound into lithium hydroxide. There are also provided methods for preparing lithium sulphate.
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Patent Agency Ranking
公开(公告)号：US20240229266A1
公开(公告)日：2024-07-11
申请号：US18391687
申请日：2023-12-21
Applicant: NEMASKA LITHIUM INC.
Inventor： Jean-François MAGNAN , Guy BOURASSA , Gary PEARSE , Peter SYMONS , J. David GENDERS , Daniel BAR , Marie-Eve LANGEVIN
IPC: C25B15/02 , B01D61/44 , C25B1/00 , C25B1/16 , C25B1/22 , C25B9/19 , C25B9/21 , C25B13/02 , C25B13/04 , C25B15/023 , C25B15/027 , C25B15/029 , C25B15/031
CPC classification number: C25B15/02 , B01D61/44 , B01D61/445 , C25B1/00 , C25B1/16 , C25B1/22 , C25B9/19 , C25B9/21 , C25B13/02 , C25B13/04 , C25B15/023 , C25B15/027 , C25B15/029 , C25B15/031 , Y02E60/36
Abstract: There are provided system for preparing lithium hydroxide from an aqueous composition comprising a lithium compound and use of the system thereof to prepare lithium hydroxide, the system comprising an electrochemical cell, a pH probe and at least one inlet for receiving acid or base for maintaining pH. For example, the lithium compound can be lithium sulphate and the aqueous composition can be at least substantially maintained at a pH having a value of about 2 to about 4.
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公开(公告)号：US20230080642A1
公开(公告)日：2023-03-16
申请号：US17988957
申请日：2022-11-17
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 , B01D61/44 , B01D61/58 , C01D15/02 , C01D15/06 , C22B1/02 , C22B1/06 , C22B3/04 , C22B3/08 , C22B3/20 , C22B3/22 , C22B26/12 , C25B9/70 , B01D61/02
Abstract: The present disclosure relates to a method for treating an electromembrane process aqueous composition comprising sodium and/or potassium sulfate, said process comprising removing water from said electromembrane process aqueous composition under conditions suitable for substantially selectively precipitating sodium and/or potassium sulfate monohydrate.
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公开(公告)号：US20210363648A1
公开(公告)日：2021-11-25
申请号：US17397625
申请日：2021-08-09
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 , C01D15/02 , C01D15/06 , C22B1/02 , B01D61/02 , B01D61/58 , C22B1/06 , B01D61/44 , C22B3/04 , C22B26/12 , C22B3/20 , C25B9/70 , C22B3/08
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.
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公开(公告)号：US20240068113A1
公开(公告)日：2024-02-29
申请号：US18387438
申请日：2023-11-06
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 , B01D61/02 , B01D61/42 , B01D61/44 , B01D61/58 , C01D15/02 , C01D15/06 , C22B1/02 , C22B1/06 , C22B3/04 , C22B3/08 , C22B3/20 , C22B3/22 , C22B26/12 , C25B9/70
CPC classification number: C25B1/16 , B01D61/025 , B01D61/42 , B01D61/44 , B01D61/58 , C01D15/02 , C01D15/06 , C22B1/02 , C22B1/06 , C22B3/04 , C22B3/08 , C22B3/20 , C22B3/22 , C22B26/12 , C25B9/70 , Y02P10/20
Abstract: The present disclosure relates to a method for treating an electromembrane process aqueous composition comprising sodium and/or potassium sulfate, said process comprising removing water from said electromembrane process aqueous composition under conditions suitable for substantially selectively precipitating sodium and/or potassium sulfate monohydrate.
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公开(公告)号：US20180244531A1
公开(公告)日：2018-08-30
申请号：US15755507
申请日：2016-08-26
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 , Bertin OUELLET
IPC: C01D15/06 , C01D15/02 , C25B1/16 , C22B3/08 , C22B3/22 , C22B1/02 , C22B7/00 , C22B26/12 , C25B9/08 , B01D61/44 , B01D61/02 , B01D61/58
Abstract: The disclosure relates to methods for preparing lithium hydroxide. For example, such methods can comprise mixing a lithium-containing material with an acidic aqueous composition optionally comprising lithium sulfate and thereby obtaining a mixture; roasting the mixture under suitable conditions to obtain a roasted, lithium-containing material; leaching the roasted material under conditions suitable to obtain a first aqueous composition comprising lithium sulfate; submitting the first aqueous composition comprising lithium sulfate to an electromembrane process under suitable conditions for at least partial conversion of the lithium sulfate into lithium hydroxide and to obtain a second aqueous composition comprising lithium sulfate, the electromembrane process involving a hydrogen depolarized anode; optionally increasing concentration of acid in the second aqueous composition; and using the second aqueous composition comprising lithium sulfate as the acidic aqueous composition optionally comprising lithium sulfate for mixing with the lithium-containing material and to obtain the mixture.
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