LITHIUM EXTRACTION METHOD

PROBLEM TO BE SOLVED: To provide a lithium extraction method which can efficiently extract lithium in a lithium ion battery with a simple operation.SOLUTION: A lithium extraction method comprises a calcining step of calcining a lithium ion battery to obtain a calcined product, a crushing step of cru...

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Bibliographische Detailangaben
Hauptverfasser:	TSUNEYODA KAZUHIKO, SASAI AKIRA, ISHIMOTO TETSUYA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a lithium extraction method which can efficiently extract lithium in a lithium ion battery with a simple operation.SOLUTION: A lithium extraction method comprises a calcining step of calcining a lithium ion battery to obtain a calcined product, a crushing step of crushing the calcined product to obtain a crushed product, a sieving step of sieving the crushed product to obtain granules of a predetermined diameter, and a hydrothermal treatment step of heating an alkali metal salt aqueous solution having a specified quantity of granules added thereto.SELECTED DRAWING: None 【課題】簡易な操作で、リチウムイオン電池中のリチウムを効率的に抽出できるリチウム抽出方法を提供する。【解決手段】本発明のリチウム抽出方法は、リチウムイオン電池を焙焼して焙焼物を得る焙焼工程と、前記焙焼物を破砕して破砕物を得る破砕工程と、前記破砕物を篩分けして、所定の粒径の粉粒体を得る篩分け工程と、所定量の粉粒体を添加したアルカリ金属塩水溶液を加熱する水熱処理工程とを備える。【選択図】なし