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| Study on Upgrading of Germanium Concentrate |
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Received:December 10, 2018
Revised:December 14, 2018
Accepted:December 17, 2018
Published Online:March 19, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.04.014 |
| KeyWord:low tannic acid germanium; leaching; removal of impurities; germanium concentrate |
| Author | Institution |
| yang Gui-sheng |
南华茂森再生科技有限公司 |
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| Abstract: |
| It’s possible to upgrade germanium concentrate of low tannic acid germanium by leaching impurity with HCl+NaCl solution, three-sections water countercurrent washing and calcination. Germanium concentration in tannic acid germanium after impurity leaching and washing is about 4% with production rate of about 45% and impurity removal rates is Ca ~90%, Pb 95%, Zn 92% and Fe 80% under the conditions including L/S=(4.0~4.5)︰1, leaching temperature of 40~60 ℃, and leaching time of 120~180 min. Germanium content in calcination concentrate is about 27%, and germanium concentrate yield rate is about 15% with germanium recovery rate of 95% above. |
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