-
1.发明授权公开(公告)号：US12258292B2
公开(公告)日：2025-03-25
申请号：US18207135
申请日：2023-06-07
Applicant: NEMASKA LITHIUM INC.
Inventor： Jean-François Magnan , David-Nicolas Allen
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%.
-
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.
-
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.
-
4.发明申请公开(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
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%.
-
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.
-
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.
-
7.发明公开公开(公告)号：US20230159348A1
公开(公告)日：2023-05-25
申请号：US18090322
申请日：2022-12-28
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
CPC classification number: C01G53/04 , B01D61/445 , C01D1/28 , C01D15/02 , C01G51/04 , C01G51/50 , C01G53/006 , C01G53/50 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M10/54 , B01D2311/2642 , B01D2311/2673 , C01P2002/54 , C01P2002/72 , C01P2006/40
Abstract: A process 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 comprises:
reacting a metal sulfate comprising (i) at least one metal chosen from nickel and cobalt and optionally (iii) at least one metal chosen from manganese and aluminum with sodium hydroxide and optionally a chelating agent in order to obtain a solid comprising the metal hydroxide and a liquid comprising sodium sulfate;
separating the liquid and the solid from one another to obtain the metal hydroxide;
submitting the liquid comprising sodium sulfate to an electromembrane process for converting the sodium sulfate into sodium hydroxide; and
reusing the sodium hydroxide obtained by the electromembrane process for reacting with the metal sulfate.-
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.
-
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.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
39
records
(took 0.014 seconds)
