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| Separation and Recovery of Germanium from Germanium Concentrates Pretreated by Alkali Oxidation |
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Received:July 08, 2015
Revised:July 17, 2015
Accepted:July 20, 2015
Published Online:November 18, 2015
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| DOI：doi：10.3969/j.issn.1007-7545.2015.12.010 |
| KeyWord:germanium; alkali oxidation pretreatment; distillation; recovery |
| Author | Institution |
| PU Shikun |
上海大学材料科学与工程学院;云南临沧鑫圆锗业股份有限公司;云南大学矿产开发与循环经济研究所 |
| LAN Yaozhong |
上海大学材料科学与工程学院 |
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| Abstract: |
| Germanium was recovered from low grade lignite germanium concentrates by oxidation with hydrogen peroxide under alkaline conditions and distillation separation with hydrochloric acid. Germanium recovery is 97.2% above with 31.5 percent point higher than that of conventional distillation under the optimum conditions including dosage of sodium hydroxide of 30% of germanium concentrates, dosage of hydrogen peroxide (30%) of 25% of germanium concentrates, oxidation pretreatment duration of 1.5 h, and dosage of hydrochloric acid of 9 times of germanium concentrates. |
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