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利用废旧线路板回收金属富集体再造超细铜粉

Keywords: 废线路板,电沉积,超细铜粉

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Abstract:

实验以氨性溶液溶浸废线路板中回收的金属富集体产出高浓度含铜浸出液作为电解原液,采用电沉积法循环再造超细铜粉。主要考察了电沉积过程中硫酸浓度、电流密度、电沉积时间和电沉积温度等条件对超细铜粉回收率的影响。实验结果表明,在硫酸浓度为12g/L,电流密度为4A/dm2,电沉积时间3h,溶液温度为40℃的条件下,电沉积超细铜粉的回收率超过97%,所得铜粉的树枝状形貌完整,纯度高,粒径小,约为3~6μm。

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