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硫氰酸盐法浸出废印刷线路板中的金 被引量:7

Study of Gold Leaching from PCB by Thiocyanate Process
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摘要 本文研究了一种从废印刷线路板(PCB)中提金的新方法。在酸性溶液(pH=1—2)中,去铜后的PCB粉末中加入氧化剂二氧化锰(二者质量比为1:0.7),络合剂硫氰酸钠溶液(0.4mol/L,固液比为1:22),室温(20cC)振荡(250r/min)3h获得了超过96%的高浸金率。硫氰酸盐作为浸金剂,性质稳定,基本不污染环境。 Printed circuit board (PCB). A new technology of leaching gold out of printed circuit board (PCB) was studied in this paper. More than 96% gold was recovered in acidic NaSCN solution ( pH = 1 - 2) at concentration 0. 4mot/L ( weight ratio of solid to liquid phase is 1 : 22 ) with MnO2 as the oxidant (weight ratio is 1:0. 7 ) at room temperature( ≈20℃ ) after 3h vibration(250r/min) from PCB powder after pretreatment. The leaching velocity of leaching gold was high and the property of leaching agent remains stable without environmental pollution.
出处 《贵金属》 CAS CSCD 2008年第1期11-14,共4页 Precious Metals
关键词 湿法冶金 废印刷线路板 二氧化锰 硫氰酸盐 hydrometallurgy waste PCB gold manganese dioxide sodium thiocyanate
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参考文献6

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二级参考文献5

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共引文献20

同被引文献112

引证文献7

二级引证文献25

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