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21.
公开(公告)号:US20240051836A1
公开(公告)日:2024-02-15
申请号:US18037669
申请日:2021-11-18
摘要: The invention provides a method of producing a carbonate or a bicarbonate of an alkali metal, in solid form, from a sulphate of the alkali metal. The method includes, in a first reaction step, reacting, in aqueous medium, a sulphate of an alkali metal with one or more alkaline earth metal sulphides, thus forming an aqueous solution of one or more sulphides of the alkali metal and one or more sulphates of the alkaline earth metal in solid form. The method also includes, in a second reaction step, in the aqueous solution of one or more sulphides of the alkali metal, reacting the one or more sulphides of the alkali metal with carbon dioxide (CO2) in gaseous form, thus forming an aqueous solution of a bicarbonate of the alkali metal and gaseous hydrogen sulphide. The method further includes, in a recovery step, recovering a carbonate or the bicarbonate of the alkali metal, in solid form, from the aqueous solution of the bicarbonate of the alkali metal.
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公开(公告)号:US11891710B2
公开(公告)日:2024-02-06
申请号:US18130190
申请日:2023-04-03
发明人: Saad Dara , Beniamin Zahiri
IPC分类号: C25B9/17 , C25B9/23 , C25B11/032 , C25B11/052 , C25B9/21 , B01D69/02 , C01D15/02 , C01D15/04 , C01D15/08 , C01F5/24 , C01F11/18 , C02F1/461 , C02F1/469 , C25B1/16 , C25C1/02 , C25C7/02 , C25C7/04 , C25B11/048 , C25B11/046 , C25B9/19 , C25B11/053 , C25B13/00 , B01D61/46 , C02F101/10 , C02F103/08 , C02F103/10
CPC分类号: C25B9/23 , B01D61/46 , B01D61/463 , B01D69/02 , C01D15/02 , C01D15/04 , C01D15/08 , C01F5/24 , C01F11/181 , C02F1/4693 , C02F1/46109 , C25B1/16 , C25B9/19 , C25B9/21 , C25B11/032 , C25B11/046 , C25B11/048 , C25B11/052 , C25B11/053 , C25B13/00 , C25C1/02 , C25C7/02 , C25C7/04 , B01D2313/345 , B01D2325/10 , B01D2325/36 , B01D2325/38 , B01D2325/42 , C02F2001/46142 , C02F2001/46166 , C02F2101/10 , C02F2103/08 , C02F2103/10
摘要: In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.
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公开(公告)号:US11884552B2
公开(公告)日:2024-01-30
申请号:US17502491
申请日:2021-10-15
发明人: Juhyeon Ahn , Dongchang Chen , Guoying Chen
IPC分类号: H01M4/04 , H01M4/1315 , H01M4/13915 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/583 , C01D15/04 , C01G33/00 , C01G45/00 , C01G23/00 , H01M10/0525 , H01M4/02
CPC分类号: C01D15/04 , C01G23/002 , C01G33/006 , C01G45/006 , H01M4/0471 , H01M4/1315 , H01M4/13915 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/583 , H01M10/0525 , C01P2002/77 , C01P2006/40 , H01M2004/028
摘要: This disclosure provides systems, methods, and apparatus related to lithium metal oxyfluorides. In one aspect, a method for manufacturing a lithium metal oxyfluoride having a general formula Li1+x(MM′)zO2-yFy, with 0.6≤z≤0.95, 0
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24.
公开(公告)号:US20240030436A1
公开(公告)日:2024-01-25
申请号:US18373510
申请日:2023-09-27
发明人: Takuya MIWA , Kuniharu NOMOTO , Junpei MOMO
IPC分类号: H01M4/58 , C01D15/02 , C01G45/00 , C01G49/00 , C01G51/00 , C01G53/00 , C30B7/10 , H01M4/36 , H01M4/587
CPC分类号: H01M4/5825 , C01D15/02 , C01G45/006 , C01G49/009 , C01G51/006 , C01G53/006 , C30B7/10 , H01M4/364 , H01M4/587 , C30B29/14
摘要: A hydrothermal synthesis for LiFePO4 is provided. First, each raw material solution is prepared using a degassed water in advance, second, those solution are mixed by dripping in a fixed order, and then those materials are reacted in a hydrothermal synthesis, so that LiFePO4 is obtained in a predesigned form.
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公开(公告)号:US20240025755A1
公开(公告)日:2024-01-25
申请号:US18255418
申请日:2021-12-01
申请人: US Borax Inc.
CPC分类号: C01D15/08 , C01D7/24 , C01D7/26 , B01D9/0022 , B01D9/004 , B01D2009/0086 , C01P2006/80
摘要: A method of forming lithium carbonate from a lithium-bearing solution including: evaporating the lithium-bearing solution to precipitate a first group of impurities; removing the first group of impurities to form a first purified solution; and performing a flash crystallisation step within a predetermined temperature range to crystallise a second group of impurities from the first purified solution; removing the second group of impurities from the first solution to form a second purified solution, wherein at least 90 wt % of lithium is recovered from the first purified solution; and reacting the second purified solution with a metal carbonate to form lithium carbonate of at least 90 wt % purity.
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公开(公告)号:US20240011167A1
公开(公告)日:2024-01-11
申请号:US18370666
申请日:2023-09-20
发明人: Saad Dara , Beniamin Zahiri
IPC分类号: C25B9/23 , C25C7/04 , C25B11/032 , C02F1/461 , C25B9/19 , C01F5/24 , C01F11/18 , B01D61/46 , C25B1/16 , C25C1/02 , C25B11/053 , C25C7/02 , B01D69/02 , C25B9/21 , C01D15/08 , C01D15/02 , C25B11/046 , C25B11/048 , C25B11/052 , C02F1/469 , C01D15/04 , C25B13/00
CPC分类号: C25B9/23 , C25C7/04 , C25B11/032 , C02F1/46109 , C25B9/19 , C01F5/24 , C01F11/181 , B01D61/46 , C25B1/16 , C25C1/02 , C25B11/053 , C25C7/02 , B01D69/02 , C25B9/21 , C01D15/08 , C01D15/02 , C25B11/046 , C25B11/048 , C25B11/052 , C02F1/4693 , C01D15/04 , C25B13/00 , B01D2325/10 , C02F2101/10
摘要: In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.
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公开(公告)号:US11851340B2
公开(公告)日:2023-12-26
申请号:US17997824
申请日:2021-04-30
IPC分类号: C01D3/06
CPC分类号: C01D3/06
摘要: A method for preparing potassium chloride from carnallite includes: carrying out high-temperature water solution mining treatment on carnallite with fresh water to obtain potassium-rich saturated brine; mixing the potassium-rich saturated brine, a sylvine saturated solution, and bittern for mixing brine, evaporation and decomposition to obtain artificial sylvine; and carrying out low-temperature selective dissolution treatment on the artificial sylvine with fresh water to prepare potassium chloride. The carnallite is mined by using hot water, which reduces the content of sodium chloride in the potassium-rich saturated brine; artificial sylvine is only subjected to low-temperature selective dissolution once, which avoids unnecessary energy consumption and impurity accumulation unnecessary for multifold cycles of thermal dissolution-cold crystallization treatment of sylvine while guaranteeing the high yield and high quality of potassium chloride. The method is suitable for different grades of carnallite, has extremely strong adaptability and loose technical conditions, and is conducive to promotion and implementation.
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公开(公告)号:US20230406718A1
公开(公告)日:2023-12-21
申请号:US18251338
申请日:2021-11-05
CPC分类号: C01D15/02 , H01M10/54 , C22B26/12 , C22B3/22 , B01D9/0004 , B01D9/0022 , C01P2006/40
摘要: Provided is a lithium hydroxide production method for producing high-purity lithium hydroxide efficiently and at a lower energy, wherein Li ions alone are recovered in a recovery liquid from a lithium ion extract extracted from a processed member of a lithium secondary battery, using a Li permselective membrane, and lithium hydroxide is produced from the recovery liquid.
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公开(公告)号:US11837726B2
公开(公告)日:2023-12-05
申请号:US16829689
申请日:2020-03-25
发明人: Moeez Iqra , Ji-Young Kim , Jaeho Park , Hee-Dae Lim , Hun-Gi Jung , Won Young Chang , Minah Lee , Seungho Yu , Kyung Yoon Chung
CPC分类号: H01M4/582 , C01D3/04 , C01P2002/72 , C01P2002/76 , C01P2002/77 , C01P2002/85 , C01P2004/04 , C01P2006/40 , H01M2004/021 , H01M2004/028
摘要: The present disclosure relates to a cathode active material for a secondary battery, a cathode for a secondary battery including the same, a secondary battery including the cathode for a secondary battery and manufacturing methods thereof. More particularly, it is possible to obtain a secondary battery having excellent electrochemical characteristics by electrochemically inducing a structural phase change in the cathode active material of a secondary battery including NaCl as a cathode active material.
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公开(公告)号:US11834343B2
公开(公告)日:2023-12-05
申请号:US17097655
申请日:2020-11-13
申请人: Riley Davis Robbins
发明人: Riley Davis Robbins
摘要: The disclosed technology includes a method for producing ultrafine alumina from salt slag waste generated in aluminum recycling useful in the manufacture of durable ceramic products; a system for recovering alumina from salt slag waste; a method and systems for recovering salts, aluminum and alumina from salt slag waste; and a method and systems of capturing ammonia in a process recovering salts, aluminum and alumina from salt slag waste. The methods and systems provided crush the dry particles of the salt slag waste, scrub the slag with water, and with steam and by means of a vented alumina press, dewater the scrubbed slag particles. In some methods and systems of the disclosed technology, the particles of the pressed alumina cake are further reduced. In some methods and systems, the salt in the salt effluent is crystalized. In some methods and systems of the disclosed technology, the ammonia is contained and captured.
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