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1.发明申请公开(公告)号：US20250003100A1
公开(公告)日：2025-01-02
申请号：US18755714
申请日：2024-06-27
Applicant: SK INNOVATION CO., LTD.
Inventor： Yeon Hwa LA , Yong Geal MOON , Tea Young LEE
Abstract: Proposed is a method of recovering acids and alkalis from raffinate generated from a metal extraction process. The method includes pretreating raffinate generated from a metal extraction process and performing electrodialysis of the pretreated raffinate. The method recovers some components present in raffinate generated from a battery manufacturing process and a battery treatment process to reuse the recovered components. Therefore, the method provides economic and environmental benefits.
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公开(公告)号：US20210028515A1
公开(公告)日：2021-01-28
申请号：US17066734
申请日：2020-10-09
Applicant: SK INNOVATION CO., LTD.
Inventor： Ji Ye NA , Min Su KOO , Yeon Hwa LA , Sung Real SON
IPC: H01M10/54 , H01M10/0525 , H01M4/36 , H01M4/62 , H01M4/131
Abstract: A method for recovering an active metal of a lithium secondary battery according to an embodiment of the present application whereby a used lithium-containing mixture is prepared, and the used lithium-containing mixture is treated with a hydrogen reduction to prepare a preliminary precursor mixture. The preliminary precursor mixture is washed with water to generate a lithium precursor including lithium hydroxide. Lithium hydroxide can be obtained by the washing treatment with high purity.
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Patent Agency Ranking
公开(公告)号：US20180065855A1
公开(公告)日：2018-03-08
申请号：US15694213
申请日：2017-09-01
Applicant: SK INNOVATION CO., LTD. , SK GLOBAL CHEMICAL CO., LTD.
Inventor： Yeon Hwa LA , Ji Min KIM , Min Ji SUNG , Woong Chul SHIN
IPC: C01B32/17
CPC classification number: C01B32/17 , B82Y30/00 , B82Y40/00 , C01B2202/22 , C01P2006/80 , Y10S977/742 , Y10S977/845
Abstract: Disclosed is a method of purifying carbon nanotubes, including treating carbon nanotubes with an inert gas at a high temperature in a low vacuum in a reactor and obtaining ultrapure carbon nanotubes, wherein the ultrapure carbon nanotubes contain 50 ppm or less of each metal remaining therein.
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公开(公告)号：US20240327256A1
公开(公告)日：2024-10-03
申请号：US18625209
申请日：2024-04-03
Applicant: SK INNOVATION CO., LTD.
Inventor： Yeon Hwa LA , Tae Wan KIM , Jae Yang SONG
CPC classification number: C02F1/463 , C02F1/46109 , C02F2001/46152 , C02F2201/4616
Abstract: Proposed is an electro-coagulation apparatus. The electro-coagulation apparatus includes a reactor having an internal space defined by a top surface, a bottom surface, and a side surface of the reactor; a plurality of electrode plates disposed spaced apart from each other inside the internal space of the reactor, and a pair of first conduits respectively connected to a front end and a rear end of the reactor. Furthermore, a cross-sectional area of the reactor is smaller than a cross-sectional area of each of the first conduits.
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公开(公告)号：US20240327255A1
公开(公告)日：2024-10-03
申请号：US18621301
申请日：2024-03-29
Applicant: SK INNOVATION CO., LTD.
Inventor： Yeon Hwa LA , Jae Yang SONG , Hye Lin ROH
CPC classification number: C02F1/463 , C02F1/02 , C02F1/46109 , C02F3/342 , C08J11/105 , C02F2001/007 , C02F2101/34 , C02F2201/46135 , C02F2201/4614 , C02F2201/4615 , C02F2209/02 , C08J2367/03
Abstract: Proposed is a process for collecting and removing microplastics in wastewater. The process includes coagulating microplastics in wastewater and adding an enzyme to the coagulated microplastics. Also, a method for collecting and removing microplastics is provided, the process comprising: pulverizing polyethylene terephthalate (PET) bottles into microplastics; dispersing the microplastics into a water system; coagulating the microplastics to produce coagulated microplastics; and adding an enzyme to the coagulated microplastics whereby the coagulated microplastics are decomposed by the enzyme into their monomer constituents. According to this process and method, the microplastics in wastewater can be removed with high efficiency.
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公开(公告)号：US20240327254A1
公开(公告)日：2024-10-03
申请号：US18618619
申请日：2024-03-27
Applicant: SK INNOVATION CO., LTD.
Inventor： Yeon Hwa LA , Tea Young LEE , Hye Lin ROH
IPC: C02F1/463 , C02F1/461 , C02F101/34
CPC classification number: C02F1/463 , C02F2001/46133 , C02F2101/34
Abstract: According to one embodiment of the present disclosure, an electrochemical water treatment reactor includes a first cavity with a wastewater inlet, a second cavity with a wastewater outlet, a spacer disposed between the first and second cavities, the spacer separating the first and second cavities from each other, an anode disposed in the first cavity, a cathode disposed in the second cavity, and a metal powder disposed in the first cavity and being in direct or indirect contact with the anode. The reactor can be used to efficiently remove contaminants from wastewater without consuming the anode.
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公开(公告)号：US20210115532A1
公开(公告)日：2021-04-22
申请号：US17046417
申请日：2019-04-09
Applicant: SK INNOVATION CO., LTD.
Inventor： Yeon Hwa LA , Kwang Kuk CHO , Min Su KOO , Ja Young RYU , Sung Real SON
IPC: C22B47/00 , H01M10/54 , H01M10/0525 , C22B26/12 , C22B3/00 , C22B7/00 , H01M4/505 , H01M4/525 , C01D15/02 , C01D15/08 , C01G53/04 , C01G51/04 , C01G45/02
Abstract: A method for recovering an active metal of a lithium secondary battery according to an embodiment of the present application whereby a cathode active material mixture obtained from a used cathode of a lithium secondary battery is prepared, and the cathode active material mixture is reacted in a fluidized bed reactor to form a preliminary precursor mixture. A lithium precursor is recovered from the preliminary precursor mixture. Yield and selectivity of a lithium precursor can be improved using the fluidized bed reactor.
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