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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：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：US20160368780A1
公开(公告)日：2016-12-22
申请号：US15190296
申请日：2016-06-23
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：US20160258071A1
公开(公告)日：2016-09-08
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
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.
Abstract translation: 提供了制备氢氧化锂的方法。 所述方法包括将包含硫酸锂和/或硫酸氢锂的水性组合物提交到第一电子过程中，所述第一电子过程包括在用于将硫酸锂和/或硫酸氢锂转化为氢氧化锂的合适条件下的双室膜工艺，并获得第一 锂还原水流和第一富含氢氧化锂的水流; 以及将第一锂还原的水流提供到第二电磁过程，其在合适的条件下包括三室膜工艺以制备至少另一部分氢氧化锂并获得第二锂还原水流和第二氢氧化锂 富集水流。 还提供了制备氢氧化锂的系统。
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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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Patent Agency Ranking
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：US20230382753A1
公开(公告)日：2023-11-30
申请号：US18138421
申请日：2023-04-24
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：US11542175B2
公开(公告)日：2023-01-03
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 , C01G51/04 , B01D61/44 , C01D1/28 , C01D15/02 , 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.
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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.
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30.发明申请公开(公告)号：US20200376409A1
公开(公告)日：2020-12-03
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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