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| Process Study on Resource Utilization of Mine Copper-cyanide-bearing Wastewater |
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Received:December 03, 2016
Revised:December 06, 2016
Accepted:December 08, 2016
Published Online:March 21, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.04.015 |
| KeyWord:copper-cyanide-bearing wastewater; activated carbon adsorption; desorption; resource utilization |
| Author | Institution |
| Wang Guo-biao |
紫金矿业集团股份有限公司 |
| Li Hong-wen |
紫金矿业集团股份有限公司 |
| Tan Xi-fa |
紫金矿业集团股份有限公司 |
| Shen Xian-de |
紫金矿业集团股份有限公司 |
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| Abstract: |
| Copper-cyanide-bearing wastewater of one mine was treated by "activated carbon adsorption-desorption combined process". Effect of pH value of solution for adsorption and adsorption mode on copper adsorption rate in adsorption stage was investigated. Effects of desorption mode, desorption time, and concentration of sulfuric acid and hydrogen peroxide of desorption solution on copper desorption rate from activated carbon in desorption stage were investigated. The results show that copper adsorption rate stabilizes at 90% above with copper content in activated carbon of 31.4 kg/t under the conditions including pH value of solution for adsorption of 8, and adsorption time of 1.5 h with 5 level series adsorption. Copper desorption rate from activated carbon is 87.6% under the conditions including concentration of sulfuric acid and hydrogen peroxide of 3% and 2 g/L respectively, and adsorption time of 7 h. Copper recovery of the whole process is 78% above. |
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