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| Composition Analysis and Leaching Characteristic of Arsenic Slag from an Abandoned Arsenic Factory |
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Received:August 09, 2023
Revised:August 14, 2023
Accepted:August 21, 2023
Published Online:October 27, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2023.12.016 |
| KeyWord:arsenic slag; heavy metal; component; leaching characteristic |
| Author | Institution |
| ZHANG Ge |
矿冶科技集团有限公司 |
| YANG Huifen |
北京科技大学 |
| LIU Kuan |
河北省张家口生态环境监测中心 |
| LIN Xingjie |
矿冶科技集团有限公司 |
| MIAO Yu |
矿冶科技集团有限公司 |
| TAN Haiwei |
矿冶科技集团有限公司 |
| ZHANG Chi |
矿冶科技集团有限公司 |
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| Abstract: |
| The component and leaching characteristic of arsenic slag from an abandoned arsenic factory sites in Guangxi were explored. The results indicate that the arsenic slag is acidic with pH value of 3.36 and its main pollutants include As, Zn, Pb, Cu and Cd, with the total content of 17 404, 2 043, 1 459, 1 376 and 570 mg/kg, respectively. The dominant heavy metal carrier minerals are arsenic-bearing jarosite, scorodite, carminite, arthurite, franklinite and marmatite and so on. The heavy metals need to be stabilized are As, Zn, Cu, Cd, with the leaching concentration of 0.69, 85.33, 41.62 and 2.58 mg/L, respectively using sulphuric acid and nitric acid method, and the pH value of leachate is 3.65. The arsenic slag has a strong acid buffer capacity. To realize the synchronous stabilization of As, Zn, Cu and Cd in arsenic slag, it is necessary to use a multifunctional composite stabilization material with strong alkaline. |
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