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| Arsenic Removal from Copper Smelting Ash Assisted by Microwave and Oxidation |
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Received:January 16, 2017
Revised:January 18, 2017
Accepted:January 20, 2017
Published Online:April 20, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.05.002 |
| KeyWord:copper smelting dust; microwave; selectivity; separation; arsenic; oxidation; leaching |
| Author | Institution |
| wangqian |
催化材料科学国家民委-教育部共建重点实验室 |
| Guo Li |
中国地质大学（武汉） |
| Chen Shaohua |
催化材料科学国家民委-教育部共建重点实验室 |
| Song Ziyu |
催化材料科学国家民委-教育部共建重点实验室 |
| Du Dongyun |
催化材料科学国家民委-教育部共建重点实验室 |
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| Abstract: |
| Copper smelting dust (referred to as “soot”) was investigated through Na2S-NaOH leaching process assisted with microwave and oxidation. The results show that leaching rate of As, Cu, Zn, and Pb is 98.45%, 3.64%, 3.88%, and 0.41% respectively under the optimum conditions including microwave time of 180 s, microwave gear of 7 (560 W), and oxygen flux of 10 L/min. Arsenic is selectively separated from soot. Na2S-NaOH leaching assisted with microwave and oxidation is an efficient way to remove arsenic from soot based on XPS, XRD, SEM, and speciation analysis of heavy metals. |
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