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| Study on Gallium Extraction from High Iron-Bearing Bauxite by Soda Roasting and Pressure Alkali Leaching |
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Received:June 23, 2017
Revised:June 27, 2017
Accepted:June 29, 2017
Published Online:November 22, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.12.008 |
| KeyWord:high iron content bauxite; gallium; soda roasting；pressure alkali leaching |
| Author | Institution |
| zhangjunjie |
北京科技大学冶金与生态工程学院 北京 |
| lihongxu |
北京科技大学冶金与生态工程学院 北京 |
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| Abstract: |
| Soda roasting followed by pressure alkali leaching is performed to recover gallium from high iron-bearing bauxite. The effects of radio of Na2CO3, roasting time, roasting temperature, leaching temperature, alkali concentration, L/S, and leaching time on gallium leaching were examined. Leaching rate of gallium is 91.25% under the optimum conditions including roasting temperature of 1 000 ℃, roasting time of 60 min, ratio of Na2CO3 to bauxite of 1, leaching temperature of 160 ℃, leaching time of 120 min, alkali concentration of 150 g/L, and L/S of 15. |
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