还原熔炼失效锂离子电池的研究

Research on Recycling of Spent Lithium Ion Battery by Reducing Smelting Process

根据从失效锂离子电池中再生有价金属的现状,提出用还原熔炼的方法回收锂离子电池中的钴和铜,并从热力学原理分析其可行性,进行实验验证,证明了用碳作还原剂此工艺是可行的。电池中的铝也能作为还原剂来还原钴氧化物。用电弧炉还原熔炼后,钴回收率78.63%,铜回收率81.54%。

Based on the status of recycling valuable metal from spent lithium ion battery, a method to recover cobalt and copper in lithium ion battery by reducing smelting process is developed, and the feasibility according to thermodynamics principium is researched, experiment validates that this technique is feasible with carbon as reducer. Aluminum in lithium ion battery can also used as reducer to reduce cobalt oxides. After reducing smelt spent lithium ion battery in arc furnace, the recovery ratio of cobalt and copper are 78. 63% and 81.54% respectively.