Method for recycling manganese and lithium from lithium ion battery anode material lithium manganese oxide waste

• Main Author: Wang Yali
• Format: Patent
• Language: Chinese; English
• Published: 03.08.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

Disclosed is a method for recycling manganese and lithium from lithium ion battery anode material lithium manganese oxide waste. The method comprises the steps that a waste lithium ion battery is discharged and disassembled to obtain a waste anode piece, the waste anode piece is subjected to calcination, water dissolution and filtering to obtain a waste lithium manganese oxide; the waste lithium manganese oxide and sodium sulfate are mixed and then subjected to ball milling, and a product obtained after ball milling is placed into an absorption device; tail gas from acid production is converted and then led into the absorption device, gas exhausted from the absorption device meets the emission standard and is exhausted to the atmosphere, a mixture in the absorption device is taken out and leached with water, a sodium carbonate solution is added into the solution to be filtered, lithium carbonate is supplemented into filter residues, then, ball milling, compression and calcination are performed, and the lithiu