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| Direct Recovery of Copper from Metal Concentrates of Waste Printed Circuit Boards with Sodium Persulfate |
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Received:March 17, 2015
Revised:March 23, 2015
Accepted:March 27, 2015
Published Online:September 18, 2015
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| DOI：doi：10.3969/j.issn.1007-7545.2015.10.009 |
| KeyWord:wasted circuit boards; copper; sodium persulfate |
| Author | Institution |
| Wang Zhi-ke |
河南师范大学环境学院 河南省环境污染控制重点实验室 |
| Wu Hai-li |
河南师范大学环境学院 河南省环境污染控制重点实验室 |
| Ye Cun-ling |
河南师范大学环境学院 河南省环境污染控制重点实验室 |
| Fan Shun-li |
河南师范大学环境学院 河南省环境污染控制重点实验室 |
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| Abstract: |
| The effects of concentration of sodium persulfate, amount of sulfuric acid, stirring speed, temperature and ratio of solid to liquid on recovery of copper from metal concentrates of waste printed circuit boards with sodium persulfate were investigated. The results show that increasing of concentration of sodium persulfate, stirring speed and temperature facilitates copper recovery. Copper recovery is 96.5% under the optimum conditions including temperature of 45 ℃, ratio of solid to liquid of 0.004(g/mL), stirring speed of 500 r/min, concentration of sodium persulfate of 0.2 mol/L, and leaching time of 60 min. |
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