|
| Extraction of Germanium and Zinc from Germanium-bearing Zinc Oxide Dust |
|
Received:April 24, 2017
Revised:April 28, 2017
Accepted:May 02, 2017
Published Online:August 21, 2017
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2017.09.012 |
| KeyWord:zinc oxide dust; germanium; sulfuric acid leaching; tannic germanium precipitation |
| Author | Institution |
| Li ZheXiong |
北京科技大学冶金与生态工程学院 |
| WangChengYan |
北京科技大学冶金与生态工程学院 |
| Yin XiMao |
清津矿山金属大学 |
| Gao mingzhe |
清津矿山金属大学 |
|
| Hits: 2179 |
| Download times: 2470 |
| Abstract: |
| Leaching of Ge-bearing zinc oxide dust with sulfuric acid was investigated. The results show that leaching rate of Zn and Ge is 89.12% and 89.95% respectively under the optimum conditions including zinc oxide dust of 50 g, mass concentration of sulfuric acid of 20 mL, leaching temperature of 80 ℃, leaching time of 2 h, and L/S of 4︰1. Germanium precipitation rate is 97.2% from leaching liquor by tannic acid at pH 2.5 and 60 ℃ for 0.5 h with mass ratio of tannic acid/germanium of 40%. Germanium concentrate (Ge 14.55%) can be obtained by roasting tannin slag at 600 ℃ for 1 h. The solution can be returned for Zn production after Ge removal. |
| Close |