有色金属(冶炼部分)

采用含氨和铵盐(硫酸铵、碳酸铵或氯化铵)的水溶液为浸出介质,在常温下通入空气直接浸出失效锂离子电池中的金属元素。在含铵盐的氨性溶液中,锂、钴的浸出率分别为小于22.4%、12.5%,而铜的浸出率可高达98.86%,有利于铜与锂、钴元素的分离。结果表明,含碳酸铵的氨性溶液浸铜效果最佳。

Ammoniacal solutions containing ammonia and ammonium salts,such as ammonium sulphate,ammonium carbonate or ammonium chloride,were adopted as leaching media for spent lithium-ion batteries(LIBs).Leaching test was carried out at room temperature by introduction of air.The leaching rates of lithium and cobalt in spent LIBs were less than 22.4% and 12.5%,respectively,while the leaching rate of copper reached 98.86%,which meant that copper could be separated from lithium and cobalt through leaching.Among the three ammonium salts,ammoniacal solutions with ammonium carbonate showed more advantage with respect to leaching efficiency.