Method for extracting and recycling metal elements in lithium battery by using chlorination process

• Main Authors: ZHONG FAPING, TAN SHUIFA, JIANG SUBIN, HE CHIHUAN, LIU HONGBING, ZHU JIQUN
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; INORGANIC CHEMISTRY; METALLURGY; PRETREATMENT OF RAW MATERIALS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a method for extracting and recovering metal elements in a lithium battery by using a chlorination process, which comprises the following steps of: 1, removing organic matters in the lithium battery to obtain a powder mixture containing a positive electrode material; 2, the powder is heated and chlorinated under chlorine, and the heating temperature ranges from 500 DEG C to 1200 DEG C; 3, the chlorinated gas product is output through a gas-solid filtering device, then two-stage desublimation is adopted, the temperature of first-stage desublimation is set to be 306 DEG C or below and 178 DEG C or above, FeCl3 is desublimated into solid deposition, and the solid deposition is used for recycling the Fe element; the temperature of second-stage desublimation is set to be 178 DEG C or below, and AlCl3 is desublimated into solid deposition for recycling the Al element; and step 4, taking out the chlorinated solid product, and recovering Li element. 本发明一种使用氯化法提取回收锂电池中的金属元素的方法，其中包括如下步骤：步骤1，去除锂