Simultaneous recovery of valuable metals from spent mobile phone battery by an acid leaching process
Simultaneous recovery of valuable metals from spent mobile phone battery by an acid leaching process
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DOI：
10.1007/s11814-007-5040-1
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发表时间：
2007-05
影响因子：
2.7
通讯作者：
S. Sakultung;Kejvalee Pruksathorn;M. Hunsom
中科院分区：
文献类型：
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作者：
S. Sakultung;Kejvalee Pruksathorn;M. Hunsom
本研究在实验室条件下，采用浸出法从废旧移动的手机电池电极中回收有价金属。在这项研究中采用了两种类型的废旧移动的手机电池：镍氢（Ni-MH）和锂离子（Li-ion）电池。研究了酸的种类（H2SO 4、HNO 3和HCl）、酸浓度（1-6 M）、固液比（10-40 g/l）、浸出时间（5-120 min）和浸出温度（303-363 K）对钴镍浸出率的影响。初步结果表明，在所有的浸出条件下，盐酸提供了更高的浸出率比H2SO 4和HNO 3的两种金属。在最佳条件下，大于92%和84%的镍和钴分别被浸出。进一步研究表明，两种金属的浸出过程均为吸热过程，符合二级反应速率规律，动力学主要受物理过程控制。
This research was carried out to recover some valuable metals from the electrodes of spent mobile phone batteries by leaching process in laboratory scale. Two types of spent mobile phone batteries were employed in this study: nickel-metal hydride (Ni-MH) and lithium-ion (Li-ion) batteries. Effects of parameters including types of acid (H2SO4, HNO3and HCl), acid concentration (1-6 M), solid-liquid ratio (10-40 g/l), leaching time (5-120 min) and leaching temperature (303-363 K) on the leaching percentages of Co and Ni were investigated. The preliminary results indicated that HCl provided higher leaching percentages than that of H2SO4and HNO3for both metals at all leaching conditions. At optimum conditions, greater than 92% and 84% of Ni and Co were leached, respectively. Further investigation indicated that the leaching process of both metals was endothermic with the rate law of a second-order reaction and its kinetics was principally controlled by the physical process.