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公开(公告)号：US20220194796A1
公开(公告)日：2022-06-23
申请号：US17275363
申请日：2018-12-21
发明人： Kiyoung Kim , Gi-Chun Han , Young-Seon Ko , Hyun Woo Lee , Kwang Seok Park , Juyoung Kim , Woonkyoung Park , Sang Won Kim , Woo Chul Jung , Kee Uek Jeung , Jung Kwan Park , Dong Soo Kim , Sang Gil Lee , Jin Yeop Wi , Young-Su Kwon
摘要： The present invention relates to a lithium compound manufacturing method comprising the steps of heat treatment of lithium-containing ore; roasting the heat-treated ore with sulfuric acid to prepare an acid product; mixing the acid product with leaching water to prepare a leachate; purifying the leachate; and adding a phosphorus supply material and a basic material to the purified leachate to obtain a solid lithium phosphate.
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公开(公告)号：US11655150B2
公开(公告)日：2023-05-23
申请号：US16956836
申请日：2018-12-18
发明人： Hyun Woo Lee , Woonkyoung Park , Heok Yang , Kwang Seok Park , Seung Taek Kuk , Ki Young Kim , Sang Gil Lee , Woo Chul Jung , Gi-Chun Han , Juyoung Kim , Young-Seon Ko , Jin Yeop Wi
IPC分类号： C01D15/08 , C01B25/30 , B01D15/00 , B01D21/01 , B01D61/44 , B01J20/08 , B01J20/28 , B01J20/34 , C01D15/02
CPC分类号： C01B25/30 , B01D15/00 , B01D21/01 , B01D61/445 , B01J20/08 , B01J20/2803 , B01J20/28016 , B01J20/3433 , B01J20/3475 , C01D15/02 , C01D15/08
摘要： The present invention relates to a method for producing lithium phosphate, comprising: passing a lithium-containing solution through an aluminum-based adsorbent to adsorb lithium on the aluminum-based adsorbent, passing the distilled water or an aqueous solution having a lower lithium concentration than the lithium-containing solution through the aluminum-based adsorbent on which the lithium is adsorbed to obtain a lithium-containing desorption solution, and putting a phosphorous supplying material in the lithium-containing desorption solution to obtain lithium phosphate.
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公开(公告)号：US10661227B2
公开(公告)日：2020-05-26
申请号：US15573523
申请日：2016-05-11
发明人： Sung Kook Park , Kwang Seok Park , Sang Gil Lee , Woo Chul Jung , Ki Young Kim , Hyun Woo Lee
摘要： The present invention relates to a method for producing lithium hydroxide and lithium carbonate, wherein the lithium hydroxide and the lithium carbonate can be produced by a series of steps of: performing bipolar electrodialysis of a lithium-containing solution from which divalent ion impurities have been removed; concentrating lithium in the lithium-containing solution and at the same time, converting the lithium to lithium hydroxide; and carbonating the lithium hydroxide to obtain lithium carbonate.
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公开(公告)号：US10759671B2
公开(公告)日：2020-09-01
申请号：US15570400
申请日：2016-04-29
发明人： Sung Kook Park , Kwang Seok Park , Sang Gil Lee , Woo Chul Jung , Ki Young Kim , Hyun Woo Lee
摘要： The present invention relates to a method for manufacturing lithium hydroxide and lithium carbonate, and a device therefor. The present invention provides a method for manufacturing lithium hydroxide, comprising: a step of dissolving lithium phosphate in an acid; a step of preparing a monovalent ion selective-type electrodialysis device disposed in the order of a cathode cell containing a cathode separator, a monovalent anion selective-type dialysis membrane for selectively permeating a monovalent anion, a monovalent cation selective-type dialysis membrane for selectively permeating a monovalent cation, and an anode cell containing an anode separator, injecting the lithium phosphate dissolved in the acid between the anode separator of the anode cell and the monovalent cation selective-type dialysis membrane, and between the cathode separator of the cathode cell and the monovalent anion selective-type dialysis membrane, respectively, and injecting water between the monovalent cation selective-type dialysis membrane and the monovalent anion selective-type dialysis membrane; a step of obtaining an aqueous lithium chloride solution, and at the same time, obtaining a phosphoric acid aqueous solution formed as a byproduct, by applying an electric current to the monovalent ion selective-type electrodialysis device; and a step of converting the obtained aqueous lithium chloride solution into an aqueous lithium hydroxide solution.
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