Device for separating and recycling metal elements in lithium battery positive electrode material

• Main Authors: ZHONG FAPING, TAN SHUIFA, JIANG SUBIN, HE CHIHUAN, LIU HONGBING, ZHU JIQUN
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2024
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a device for separating and recycling metal elements in a lithium battery positive electrode material, which comprises a lithium battery pretreatment device for obtaining a powder mixture containing the positive electrode material; the acid leaching equipment is used for obtaining a leaching solution; if the lithium battery to be recycled contains a lithium iron phosphate battery, the device further comprises a heating furnace for heating a solid component obtained after solid-liquid filtration after acid leaching in an oxygen-containing environment; if the lithium batteries to be recycled contain ternary lithium batteries, the device further comprises first extraction equipment used for extracting the leachate, and diisooctyl phosphate serves as an extraction agent. 本发明提供了一种分离回收锂电池正极材料中的金属元素的装置，其中包括：锂电池预处理设备，以得到含有正极材料的粉末混合物；酸浸设备，以得到浸出液；如果待回收的锂电池中含有磷酸铁锂电池，该装置还包括加热炉，用于将酸浸后进行固液过滤后得到的固体组分在含氧环境下加热；如果待回收的锂电池中含有三元锂电池，该装置还包括第一萃取设备，用于对浸出液进行萃取，其中磷酸二异辛酯作为萃取剂。