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| Acid Leaching Behavior of Ga and Al in Red Mud at Atmospheric Pressure |
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Received:July 14, 2016
Revised:July 21, 2016
Accepted:July 22, 2016
Published Online:November 17, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.12.008 |
| KeyWord:red mud; acid leaching; gallium; aluminum |
| Author | Institution |
| LU Fang-hai |
贵州理工学院 材料科学与冶金工程学院 |
| LI An-jing |
贵州大学材料与冶金学院 |
| WANG Jian-wei |
贵州大学 材料与冶金学院 |
| ZHAO Ping-yuan |
贵州大学 材料与冶金学院 |
| XIAO Tang-fu |
中国科学院地球化学研究所环境地球化学国家重点实验室 |
| TAN De-can |
中国科学院地球化学研究所环境地球化学国家重点实验室 |
| YUAN Yi |
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| Abstract: |
| Leaching behavior of Ga and Al in red mud was studied at atmospheric pressure with hydrochloric acid as leachant. The effects of dosage of hydrochloric acid, temperature, time, and L/S on leaching behavior of Ga and Al were investigated. The results show that leaching rates of Ga and Al are 94.77% and 88.44% respectively, with concentrations of Ga2O3 and Al2O3 of 3.68 mg/L and 22.73 g/L in lixivium, respectively, under the conditions including acid addition coefficient of 1.2, leaching temperature of 55 ℃, leaching time of 4h, and L/S=8. Leaching efficiencies of Ga and Al are in positive correlation under the test conditions. |
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