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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：US11083978B2
公开(公告)日：2021-08-10
申请号：US16328220
申请日：2017-08-28
Applicant: NEMASKA LITHIUM INC.
Inventor： Jean-François Magnan , Guy Bourassa , Nicolas Laroche , Bertin Ouellet , Clive Brereton , Steven Buchi , Tsuki Naka
Abstract: The present disclosure relates to processes for treating an aqueous composition comprising lithium sulfate and sulfuric acid. The processes comprise evaporatively crystallizing the aqueous composition comprising lithium sulfate and sulfuric acid under conditions to obtain crystals of lithium sulfate monohydrate and a lithium sulfate-reduced solution; and optionally separating the crystals of the lithium sulfate monohydrate from the lithium sulfate-reduced solution. The processes optionally further comprise concentrating the lithium sulfate-reduced solution under conditions to obtain an acidic condensate and a concentrate comprising sulfuric acid.
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公开(公告)号：US10800663B2
公开(公告)日：2020-10-13
申请号：US15861587
申请日：2018-01-03
Applicant: NEMASKA LITHIUM INC.
Inventor： Guy Bourassa , Gary Pearse , Stephen Charles Mackie , Mykolas Gladkovas
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.
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公开(公告)号：US09382126B2
公开(公告)日：2016-07-05
申请号：US14404466
申请日：2013-05-30
Applicant: Nemaska Lithium Inc.
Inventor： Guy Bourassa , Gary Pearse , Stephen Charles Mackie , Mykolas Gladkovas
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.
Abstract translation: 提供了制备碳酸锂的方法。 例如，这样的方法可以包括通过将CO 2喷射到所述组合物来使包含氢氧化锂的水性组合物与CO 2反应，从而获得包含碳酸锂的沉淀物。 所述方法还可以包括将至少一部分沉淀物插入澄清器中并获得含有碳酸氢锂和包含碳酸锂的固体的上清液，从上清液中分离固体; 并在所需温度下加热上清液，以至少部分地将碳酸氢锂转化为碳酸锂。
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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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Patent Agency Ranking
公开(公告)号：US12275650B2
公开(公告)日：2025-04-15
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
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) and optionally (ii) with lithium hydroxide, sodium hydroxide and/or potassium hydroxide and optionally a chelating agent 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 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 for reacting with the metal sulfate; and reusing the lithium hydroxide for reacting with the metal sulfate and/or with the metal 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：US11142466B2
公开(公告)日：2021-10-12
申请号：US16766287
申请日：2018-11-22
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.-
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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