LITHIUM RECOVERY METHOD AND LITHIUM ION SECONDARY BATTERY PROCESSING METHOD

To provide a lithium recovery method and the like capable of eliminating necessity of discharge of a lithium ion secondary battery and reducing energy costs in a heat treatment process.SOLUTION: There are provided a lithium recovery method for recovering lithium from a lithium ion secondary battery...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIHARA REISEI, NISHIKAWA CHIHIRO, WATANABE AKISHIGE, HONMA YOSHIHIRO, ITO YOSHIMOTO, YAMASHITA MASATAKA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY ELECTRICITY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	To provide a lithium recovery method and the like capable of eliminating necessity of discharge of a lithium ion secondary battery and reducing energy costs in a heat treatment process.SOLUTION: There are provided a lithium recovery method for recovering lithium from a lithium ion secondary battery and the like. The lithium recovery method includes: a heat treatment process of performing heat treatment on a lithium ion secondary battery having residual voltage that is 80% or more of rated voltage to obtain a heat treated object; a crushing process of crushing the heat treated object to obtain crushed debris; and a lithium recovery process of recovering lithium from the crushed debris.SELECTED DRAWING: Figure 1 【課題】リチウムイオン二次電池の放電が不要となり、熱処理工程でのエネルギーコストを下げることができるリチウムの回収方法等の提供。【解決手段】リチウムイオン二次電池からリチウムを回収するリチウムの回収方法であって、定格の電圧に対し８０％以上の電圧を残存させたリチウムイオン二次電池を熱処理することにより、熱処理物を得る熱処理工程と、前記熱処理物を破砕することにより、破砕物を得る破砕工程と、前記破砕物から、リチウムを回収するリチウム回収工程と、を含むリチウムの回収方法等である。【選択図】図１