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| Study on Enrichment of Mercury from Acid Mud of Copper Smelting |
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Received:March 12, 2019
Revised:March 16, 2019
Accepted:March 18, 2019
Published Online:June 17, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.07.005 |
| KeyWord:copper smelting; acid mud; mercury; leaching; reducing enrichment method |
| Author | Institution |
| Huang Kai |
云南省固体废物管理中心 |
| An Junjing |
云南省固体废物管理中心 |
| Zhao Yang |
云南省固体废物管理中心 |
| Sun Keyuan |
云南省固体废物管理中心 |
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| Abstract: |
| Purification and recycling of mercury from acid mud of copper smelting by method of atmospheric leaching and reducing enrichment were investigated with NaClO and HNO3 mixed solution as leaching agent. The results show that Hg leaching rate is 93.6% above under the optimum leaching conditions including ratio of liquid to solid of 5 mL/g, stirring rate of 500 r/min, leaching temperature of 20 ℃, leaching time of 30 min, and volume ratio of HNO3 to NaClO of 4︰1. After addition of 0.1% volume ratio of 10% NaH2PO2 to lixivium, Hg content in enrichment slag is 20.6% which can serve as materials to prepare mercury. |
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