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公开(公告)号：US11697861B2
公开(公告)日：2023-07-11
申请号：US16185973
申请日：2018-11-09
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 , C01D7/07 , B01D61/42 , B01D61/44 , C25B1/14 , C25B9/19 , C25B9/70 , C22B3/44 , C22B4/02 , C25B1/16
CPC classification number: C22B26/12 , B01D61/422 , B01D61/445 , C01D7/07 , C22B3/44 , C22B4/02 , C25B1/14 , C25B1/16 , C25B9/19 , C25B9/70 , B01D2311/2684 , C01B2203/0283 , Y02E60/36
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：US20150152563A1
公开(公告)日：2015-06-04
申请号：US14396109
申请日：2013-04-23
Applicant: Nemaska Lithium Inc.
Inventor： Guy Bourassa , Gary Pearse , Stephen Charles Mackie , Mykolas Gladkovas , J. David Genders , Peter Symons , 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.
Abstract translation: 提供了制备氢氧化锂的方法。 例如，这样的方法可以包括在适于将至少一部分所述锂化合物转化为氢氧化锂的条件下将包含锂化合物的含水组合物递送到电解中。
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公开(公告)号：US10597305B2
公开(公告)日：2020-03-24
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: C25C7/04 , C25C7/00 , C01D15/06 , C01D15/02 , C22B1/02 , C22B3/08 , C25B1/16 , C22B3/22 , C22B7/00 , C22B26/12 , B01D61/02 , B01D61/44 , B01D61/58 , C25B9/08 , B01D61/46 , C25B15/08
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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公开(公告)号：US10544512B2
公开(公告)日：2020-01-28
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: B01D61/44 , B01D61/58 , C22B1/06 , C22B3/08 , C25B1/16 , B01D61/42 , C01D15/02 , C01D15/06 , C22B1/02 , B01D61/02
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：US10144990B2
公开(公告)日：2018-12-04
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-François Magnan , Geneviève Clayton
IPC: C01D7/07 , C25B1/16 , C22B26/12 , B01D61/42 , B01D61/44 , C22B3/44 , C22B4/02 , C25B1/14 , C25B9/08 , C25B9/18
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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Patent Agency Ranking
公开(公告)号：US09677181B2
公开(公告)日：2017-06-13
申请号：US14396109
申请日：2013-04-23
Applicant: Nemaska Lithium Inc.
Inventor： Guy Bourassa , Gary Pearse , Stephen Charles Mackie , Mykolas Gladkovas , J. David Genders , Peter Symons , 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.
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公开(公告)号：US12168811B2
公开(公告)日：2024-12-17
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 , B01D61/44 , C01D7/07 , C22B3/44 , C22B4/02 , C25B1/14 , C25B1/16 , C25B9/19 , C25B9/21 , C25B9/70 , C25B15/027 , C25B15/031 , C25B15/08
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：US11519081B2
公开(公告)日：2022-12-06
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: C25B1/00 , 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 , C22B3/22 , 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：US10066305B2
公开(公告)日：2018-09-04
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 , Y02E60/366
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：US11085121B2
公开(公告)日：2021-08-10
申请号：US16712961
申请日：2019-12-12
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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