Method for recovering valuable metal in positive plate of lithium battery

The invention discloses a method for recycling valuable metal in a lithium battery positive plate. The method comprises the following steps: S1, mixing a positive plate material with reducing metal, and roasting; the roasting is carried out under a protective atmosphere; s2, performing magnetic sepa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CAI YONG, CHEN RUOKUI, FU XIONGCONG, NGUYEN DINH SON, LI CHANGDONG, OUYANG SHIBAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM CRYSTAL GROWTH ELECTRICITY ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY PRETREATMENT OF RAW MATERIALS PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY PRODUCTION AND REFINING OF METALS PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH TREATMENT OF ALLOYS OR NON-FERROUS METALS UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	The invention discloses a method for recycling valuable metal in a lithium battery positive plate. The method comprises the following steps: S1, mixing a positive plate material with reducing metal, and roasting; the roasting is carried out under a protective atmosphere; s2, performing magnetic separation on the material obtained in the step S1 to obtain a magnetic component and a non-magnetic component; s3, performing acid dissolution on the magnetic component, concentrating the obtained leachate, and performing cooling crystallization to obtain metal salt A; s4, the non-magnetic component is soaked in water, and sediment and water soaking liquid are obtained; adding carbonate into the water immersion liquid to obtain lithium carbonate; and dissolving the sediment with acid, purifying, and evaporating and crystallizing the obtained dissolved solution to obtain the metal salt B. The recovery method provided by the invention can achieve the purpose of omitting extraction and subsidiary steps thereof through si