METHOD AND APPARATUS FOR RECOVERING VALUABLE METAL IN LITHIUM SECONDARY BATTERY ELECTRODE MATERIAL

PROBLEM TO BE SOLVED: To provide a method for recovering lithium, cobalt and other rare valuable metallic component from a lithium secondary battery electrode material by a simple operation. SOLUTION: The valuable metallic component is recovered by loading the electrode material of a crushed lithium...

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Hauptverfasser:	AZUMA TATSUHIRO, SENDAI AKIRA, YAMAZAKI SEIICHIRO, TAKENAKA SATSUKI, TSUNODA TOSHIYA
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for recovering lithium, cobalt and other rare valuable metallic component from a lithium secondary battery electrode material by a simple operation. SOLUTION: The valuable metallic component is recovered by loading the electrode material of a crushed lithium battery in a molten salt vessel 1, chemically reacting under an atmospheric oxygen atmosphere at about 300°C in the presence of the molten salt such as lithium nitrate and precipitating the valuable metals contained in the electrode material as metal oxides or metallic carbonates in the molten salt to separate, filtering the oxides or carbonates by using a precipitate separator 2 and recovering. COPYRIGHT: (C)2003,JPO