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    HIGH VALUE-ADDED METHOD FOR RESOURCE RECOVERY FROM LITHIUM SLUDGE AND FLUORIDE SLUDGE
    3.
    发明公开
    HIGH VALUE-ADDED METHOD FOR RESOURCE RECOVERY FROM LITHIUM SLUDGE AND FLUORIDE SLUDGE 审中-公开

    公开(公告)号：US20240247334A1

    公开(公告)日：2024-07-25

    申请号：US18290355

    申请日：2022-07-04

    Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

    Inventor： Taegong RYU ,  Junho SHIN ,  Jae-Min JEONG

    IPC: C22B7/00 ,  C22B1/00 ,  C22B26/12

    CPC classification number: C22B7/007 ,  C22B1/005 ,  C22B26/12

    Abstract: The present invention provides a high value-added method for resource recovery from lithium sludge and fluoride sludge, and an economic sludge treatment method, wherein lithium fluoride (LiF), which is an insoluble lithium compound, is prepared by reacting lithium sludge with fluoride sludge, and then Li—Al layered double hydroxide (LI-Al LDH), which is an insoluble lithium compound, is prepared by reacting reaction filtrate with an aluminum compound, after which a conversion product is prepared by a sulfation reaction of the Li—Al layered double hydroxide (LI-Al LDH), which is an insoluble lithium compound, with a sulfuric acid compound, a lithium concentrate is prepared by leaching the conversion product with water, and then the lithium concentrate is recirculated as a lithium raw material to efficiently and economically recover lithium ions contained in the lithium sludge, or lithium fluoride (LiF) is prepared, and then lithium ions and fluoride ions are economically recovered from lithium sludge and fluoride sludge via additional precipitation/separation of lithium fluoride through the mechanical vapor recompression (MVR) of the reaction filtrate, and trace amounts of fluoride ions contained in the filtrate are reacted with a calcium compound to separate the filtrate into calcium fluoride precipitate and residual process water and discharge a small amount thereof.

    METHOD OF PREPARING LITHIUM ADSORPTION STRUCTURE HAVING LARGE SURFACE AREA
    5.
    发明申请
    METHOD OF PREPARING LITHIUM ADSORPTION STRUCTURE HAVING LARGE SURFACE AREA 有权
    制备具有大面积面积的锂吸附结构的方法

    公开(公告)号：US20160214083A1

    公开(公告)日：2016-07-28

    申请号：US15007735

    申请日：2016-01-27

    Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

    Inventor： Kang-Sup CHUNG ,  Byoung-Gyu KIM ,  Taegong RYU ,  Jungho RYU ,  In-Su PARK ,  Hye-Jin HONG ,  Jae-chun LEE

    IPC: B01J20/32 ,  B01J20/30 ,  B01J20/28 ,  C23C26/00 ,  B01J20/06

    CPC classification number: B01J20/3236 ,  B01J20/06 ,  B01J20/28016 ,  B01J20/3021 ,  B01J20/3078 ,  B01J20/321 ,  C23C24/04

    Abstract: Provided are a lithium adsorbent prepared using an aerosol deposition method, including (a) synthesizing lithium manganese oxide powder, and (b) coating the lithium manganese oxide powder on a surface of a substrate by the aerosol deposition method, and a method of preparing the same. The lithium adsorbent is characterized in that the lithium manganese oxide powder may be directly coated on various substrates using the aerosol deposition method, thereby greatly reducing a decrease of a lithium recovery rate even after a long time has lapsed.Further, the lithium adsorbent having a large surface area prepared by the preparation method of the present invention is characterized by being easily handled, being selectively reacted with lithium ions, having a larger adsorption area, being physically and chemically stable, and being used reversibly.

    Abstract translation: 提供了使用气溶胶沉积法制备的锂吸附剂，其包括（a）合成锂锰氧化物粉末，和（b）通过气溶胶沉积法在基材的表面上涂覆锂锰氧化物粉末，以及制备 相同。 锂吸附剂的特征在于，可以使用气溶胶沉积法将锂锰氧化物粉末直接涂布在各种基板上，从而即使经过长时间后也可大大降低锂回收率的降低。 此外，通过本发明的制备方法制备的具有大表面积的锂吸附剂的特征在于易于处理，与锂离子选择性反应，吸附面积大，物理和化学稳定，并且可逆地使用。

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