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| Process Study on Treatment of Silver Electrolysis Solution with EMEW |
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Received:May 24, 2018
Revised:May 24, 2018
Accepted:May 28, 2018
Published Online:September 19, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.10.012 |
| KeyWord:EMEW; silver electrolysis; neutralization |
| Author | Institution |
| CHEN Hang |
厦门紫金矿冶技术有限公司 福建 |
| Lin Hong-fu |
低品位难处理黄金资源综合利用国家重点实验室 |
| ZHONG Shuiping |
厦门紫金矿冶技术有限公司 福建 |
| WANG Jun-e |
厦门紫金矿冶技术有限公司 福建 |
| WU Xinglin |
铜绿色生产及伴生资源综合利用福建省重点实验室 福建 |
| ZHANG Huanran |
铜绿色生产及伴生资源综合利用福建省重点实验室 福建 |
| LI Tao |
铜绿色生产及伴生资源综合利用福建省重点实验室 福建 |
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| Abstract: |
| To address big consumption of copper powder, process backlog, and reduce production capacity of Caldor Furnaces during copper powder replacement process of silver electrolysis solution, novel process of “EMWE- neutralization precipitation” was proposed. After two-stage EMWE, concentration of silver ions in electrolyte drops from 83 g/L to 2.8 g/L, copper ion concentration remains unchanged at about of 14 g/L, and purity of electrodeposited silver powder is 99.9% above. Crude silver powder can be returned to process of sliver electrolyte preparation. After neutralization treatment, tail solution can be directly delivered to environmental protection workshop, and neutralization residue can be returned to anode mud acid leaching process. |
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