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公开(公告)号：US20250011184A1
公开(公告)日：2025-01-09
申请号：US18889049
申请日：2024-09-18
Applicant: Li Industries, Inc.
Inventor： David YOUNG , Tairan YANG , Panni ZHENG , Zheng LI
Abstract: Embodiments described herein relate to recycling of spent lithium battery material. In some aspects, a method can include suspending a lithium source in a solvent containing an oxidation reagent to extract lithium, forming an extracted lithium solution, separating the extracted lithium solution from residual solids of a lithium source, purifying the extracted lithium solution by precipitating and filtering impurities, and precipitating the lithium in the purified lithium solution to generate lithium carbonate (Li2CO3). In some embodiments, the method can further include preprocessing the lithium source to improve kinetics of the lithium extraction. In some embodiments, the preprocessing can include a cutting or shredding step to downsize the lithium source. In some embodiments, the lithium source can include lithium-ion battery waste. In some embodiments, the oxidation reagent can include sodium persulfate (Na2S2O8), potassium persulfate (K2S2O8), ammonium persulfate (NH4)2S2O8, hydrogen peroxide (H2O2), ozone (O3), and/or nitrous oxide (N2O).
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2.发明申请公开(公告)号：US20240391787A1
公开(公告)日：2024-11-28
申请号：US18664346
申请日：2024-05-15
Applicant: Koch Technology Solutions, LLC
Inventor： Constantine Collias , Jason Alan Bootsma , Daniel Travis Shay , Timothy Jude Campbell
Abstract: There is disclosed a process for selectively purifying a lithium chloride product stream from an aqueous lithium salt-containing solution, the process comprising the steps of: introducing the aqueous lithium salt-containing solution to one or more columns filled with a lithium selective sorbent; flowing the aqueous lithium salt-containing solution through the one or more columns to adsorb lithium chloride from the aqueous lithium salt-containing solution onto a sorbent and form a sorbent with a greater lithium chloride content than the sorbent prior to introducing the solution; flowing a desorbent fluid once-through the at least one or more columns to desorb lithium chloride from the sorbent into an eluate stream, wherein the desorbent fluid is flowed in a co-current direction with respect to the direction of flow of the aqueous lithium salt-containing solution, and recovering a lithium chloride product stream from the eluate stream, wherein the eluate stream has a Li:TDS ratio of 0.08 or more.
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公开(公告)号：US20240150191A1
公开(公告)日：2024-05-09
申请号：US18549348
申请日：2022-03-03
Applicant: SK INNOVATION CO., LTD.
Inventor： Young Bin SEO , Ji Yun PARK , Sung Real SON , Sang Ick LEE , Suk Joon HONG , Ji Min KIM
Abstract: In a method for recovering lithium hydroxide from a lithium secondary battery, cathode powder is prepared from a cathode of the lithium secondary battery. A cathode active material mixture is prepared by mixing the cathode powder with a calcium compound. The cathode active material mixture is reduced to form a preliminary precursor mixture. A lithium precursor is recovered from the preliminary precursor mixture. Therefore, a lithium precursor can be obtained with high purity without a complicated leaching process or an additional process, which result from a wet-based acid solution process.
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公开(公告)号：US20230416091A1
公开(公告)日：2023-12-28
申请号：US18265001
申请日：2021-12-01
Applicant: INCHEMS CO.,LTD
Inventor： Hag Soo KIM
IPC: C01B25/14 , H01M10/0562 , C01D15/04 , C01D15/06 , B01J6/00
CPC classification number: C01B25/14 , H01M10/0562 , C01D15/04 , C01D15/06 , B01J6/001 , H01M2300/008
Abstract: The present specification provides a method for preparing a solid electrolyte for a secondary battery, comprising the steps of: (S1) preparing a material composition comprising phosphorus (P) sulfide, a lithium halide and lithium sulfide; (S2) mechanically milling the material composition in a milling container; and (S3) calcining a compound obtained after the milling step, wherein the calcination step (S3) performs purging using gas.
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公开(公告)号：US20230150829A1
公开(公告)日：2023-05-18
申请号：US17917336
申请日：2021-04-08
Applicant: BASF SE , UNIVERSITY OF WATERLOO
Inventor： Parvin Adeli , Zhang Zhizhen , Linda Nazar , Joern Kulisch , Xiaohan Wu
IPC: C01D15/04
CPC classification number: C01D15/04 , C01P2006/40
Abstract: Described are a solid material which has ionic conductivity for lithium ions, a process for preparing said solid material, a use of said solid material as a solid electrolyte for an electrochemical cell, a solid structure selected from the group consisting of a cathode, an anode and a separator for an electrochemical cell comprising the solid material, and an electrochemical cell comprising such solid structure.
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Patent Agency Ranking
公开(公告)号：US20230079295A1
公开(公告)日：2023-03-16
申请号：US17797397
申请日：2021-01-08
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Shin-ya MATSUMOTO , Masatoshi TAKANO , Shin-ichi HEGURI , Satoshi ASANO , Osamu IKEDA , Yohei KUDO
Abstract: A method for producing lithium hydroxide that allows reducing a load of removing divalent or more ions with an ion-exchange resin is provided. The method for producing lithium hydroxide includes steps (1) to (3) below. (1) a neutralization step: a step of adding an alkali to a first lithium chloride containing liquid to obtain a post-neutralization liquid, (2) an ion-exchange step: a step of bringing the post-neutralization liquid into contact with an ion-exchange resin to obtain a second lithium chloride containing liquid, and (3) a conversion step: a step of electrodialyzing the second lithium chloride containing liquid to obtain a lithium hydroxide containing liquid. Since this producing method allows roughly removing divalent or more ions in the neutralization step, a load of metal removal with the ion-exchange resin is reducible.
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公开(公告)号：US20230064968A1
公开(公告)日：2023-03-02
申请号：US17818949
申请日：2022-08-10
Applicant: BHER Minerals, LLC
Inventor： Eric SMITH , Chad SMITH , John Michael McNAMARA
Abstract: Provided herein are processes for recovering lithium ions from a brine source. The process can comprises increasing the pH of a brine source comprising lithium ions to at least about 5.5; contacting the pH-elevated brine source with a bed of protonated ion exchange media to produce a lithiated ion exchange media and a lithium-depleted brine stream; contacting the lithiated ion exchange media with an acidic aqueous wash liquid; and contacting the washed lithiated ion exchange media with an elution liquid comprising an acid. Also provided herein is a process for increasing the pH of brine comprising obtaining brine from a brine source comprising lithium ions; adding the brine to a continuously stirred tank reactor without preprocessing the brine to remove solid matter; adding a strong base to the continuously stirred tank reactor; contacting the brine with the base. Further provided herein are processes for creating a lithiated ion exchange media, which can comprise contacting a pH-elevated brine source with a bed of protonated ion exchange media; and producing a lithiated ion exchange media and a spent brine, wherein the bed of protonated ion exchange media comprises a metal oxide absorbent and a polymeric binder.
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公开(公告)号：US20230044223A1
公开(公告)日：2023-02-09
申请号：US17930107
申请日：2022-09-07
Inventor： TAKASHI KUBO , KAZUFUMI MIYATAKE , YOHEI HAYASHI , YUSUKE NISHIO , AKIHIRO SAKAI
IPC: C01F17/253 , C01C1/16 , C01D15/04 , C01F11/20
Abstract: The production method of the present disclosure includes heat-treating a material mixture containing a compound containing Y, a compound containing Gd, NH4α, Liβ, and Caγ2 in an inert gas atmosphere. The compound containing Y is at least one selected from the group consisting of Y2O3 and Yδ3, and the compound containing Gd is at least one selected from the group consisting of Gd2O3 and Gdε3. The material mixture contains at least one selected from the group consisting of Y2O3 and Gd2O3, and α, β, γ, δ, and ε are each independently at least one selected from the group consisting of F, Cl, Br, and I.
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公开(公告)号：US11555251B2
公开(公告)日：2023-01-17
申请号：US17416413
申请日：2019-12-19
Applicant: Mangrove Water Technologies LTD.
Inventor： Saad Dara , Benjamin Zahiri
IPC: C01D7/00 , C25B1/14 , C25B9/23 , C25B11/032 , C25B11/052 , C25B9/21 , B01D61/46 , B01D69/02 , C01D15/02 , C01D15/04 , C01D15/08 , C01F5/24 , C01F11/18 , C02F1/461 , C02F1/469 , C25B1/16 , C25C1/02 , C25C7/02 , C25C7/04 , C02F101/10 , C02F103/08 , C02F103/10
Abstract: 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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10.发明授权公开(公告)号：US11554358B2
公开(公告)日：2023-01-17
申请号：US16303981
申请日：2017-05-23
Applicant: ERAMET , IFP ENERGIES NOUVELLES
Inventor： Malika Boualleg , Fabien Burdet , Yohan Florent Oudart
Abstract: The present invention relates to the field of solid materials for the adsorption of lithium. In particular, the present invention relates to a novel process for preparing a solid crystalline material formed preferably in extrudate form, of formula (LiCl)x.2Al(OH)3,nH2O with n being between 0.01 and 10, x being between 0.4 and 1, comprising a step a) to precipitate boehmite under specific conditions of temperature and pH, a step to place the precipitate obtained in contact with a specific quantity of LiCl, at least one forming step preferably via extrusion, said process also comprising a final hydrothermal treatment step, all allowing an increase in lithium adsorption capacity and in the adsorption kinetics of the materials obtained compared to prior art materials, when used in a process to extract lithium from saline solutions.
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