H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 10/54 (2006.01) C22B 7/00 (2006.01) C22B 26/12 (2006.01) H01M 10/40 (2006.01)
Patent
CA 2311792
A method for crushing a used lithium ion cell safely with high efficiency characterized by comprising a case crushing/separating step of separating a plastic case protecting a sealed cell body safely and reliably to the outside of the system, and separately recovering valuable substances such as lithium cobaltate which is a lithium-transition metal complex oxide, aluminum, and copper by repeatedly vibrating or pressing the cell cooled at -50 ~C or less by utilizing materials having a rigidity and a specific gravity both higher than those of plastic material of the plastic case so as to separate the cell into the sealed cell body and the plastic case, a heating separating step of heating the separated cell body at 200 ~C or more in a non-oxidizing atmosphere to separate mainly organic substances, and one or more separating steps of removing noise substances from the chips produced in the cell crushing step in order so as to obtain objective useful substances.
L'invention porte sur un procédé sûr et efficace de déchiquetage des piles à ions lithium comportant: les étapes suivantes: écrasement/séparation de l'étui plastique protégeant sûrement et fiablement le corps de pile de l'extérieur; séparation/récupération des substances précieuses telles que le lithium cobaltate, oxyde complexe de lithium et d'un métal de transition, l'aluminium, et le cuivre, sous l'effet de vibrations et de compressions répétées, ou de compressions à -50 ·C ou moins en utilisant des matériaux d'une rigidité et d'un poids spécifique dépassant ceux formant l'enveloppe afin de séparer l'étui du corps; chauffage/séparation du corps à 200 ·C ou plus dans une atmosphère non oxydante pour séparer les substances principalement organique; et une ou plusieurs étapes d'élimination des substances parasites produites lors du déchiquetage pour obtenir des substances directement utilisables.
Honmura Shiro
Kamimura Takeo
Nishida Kiyonori
Sasaki Kenji
Tanii Tadaaki
Gowling Lafleur Henderson Llp
Mitsubishi Heavy Industries Ltd.
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