Recovery of valuable materials from waste mobile phones is significantly important with the rapid development of telecommunication industry. In this work, the comparative study was conducted on the copper leaching behaviors from waste mobile phones using various types of ionic liquids of [Bmim]Cl, [Emim]Cl, [Bmin][BF₄], and [Bmim][PF₆]. Effects of various operational factors, including ionic liquid type, additive agent, oxidizing agent, leaching time and temperature, on the copper leaching efficiency were investigated in detail. The results indicated that the copper leaching efficiency was improved with the addition of H₂O₂. Both considering leaching time and temperature, [Emim]Cl and [Bmim][BF₆] were the ideal ionic liquids for high copper leaching rates under suitable operational conditions. The kinetics of copper leaching using the ionic liquids of [Emim]Cl and [Bmim][BF₆] were clarified to determine the controlling model of copper leaching reaction. The results proved that the copper leaching reaction mainly depended on the controlling of solid membranes diffusion. The efficiencies of copper recovery by slurry electrolysis using various ionic liquid solutions were compared. The optimal copper recovery of 92.65% was obtained with the maximal current efficiency of 79.99% in the ionic liquid solution of CuSO₄-NaCl-H₂SO₄-[Bmim][PF₆]. The morphology analysis of copper deposit layer after slurry electrolysis proved better copper recovery performance using [Bmim][PF₆] as ionic liquid.

随着电信行业的快速发展，从废弃手机中回收有价值的材料非常重要。在这项工作中，使用各种类型的[Bmim] Cl，[Emim] Cl，[Bmin] [BF ₄ ]和[Bmim] [PF ₆ ]离子液体对废手机中的铜浸出行为进行了比较研究。]。详细研究了离子液体类型，添加剂，氧化剂，浸出时间和温度等各种操作因素对铜浸出效率的影响。结果表明，加入H ₂ O _2可提高铜的浸出效率。同时考虑浸出时间和温度，[Emim] Cl和[Bmim] [BF ₆是在合适的操作条件下实现高铜浸出率的理想离子液体。阐明了使用[Emim] Cl和[Bmim] [BF ₆ ]离子液体浸出铜的动力学，从而确定了铜浸出反应的控制模型。结果表明，铜的浸出反应主要取决于对固体膜扩散的控制。比较了使用各种离子液体溶液通过淤浆电解回收铜的效率。在CuSO ₄ -NaCl-H ₂ SO _4- [Bmim] [PF ₆ ]离子液体溶液中，最佳铜回收率为92.65％，最大电流效率为79.99％。]。浆料电解后的铜沉积层的形态分析证明，使用[Bmim] [PF ₆ ]作为离子液体，铜的回收性能更好。