| 水热碱溶法从粉煤灰中浸出镓的研究 |
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| 引用本文： | 徐梦,辛志峰,李婷,白林山,董永平,储向峰.水热碱溶法从粉煤灰中浸出镓的研究[J].矿冶工程,2016,36(4):68-71. |
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| 作者姓名： | 徐梦 辛志峰 李婷 白林山 董永平 储向峰 |
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| 作者单位： | 安徽工业大学 化学与化工学院, 安徽 马鞍山 243002 |
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| 基金项目： | 国家自然科学基金煤炭联合基金(U1361123) |
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| 摘 要： | 采用水热碱溶法从焙烧处理后的粉煤灰中浸出镓, 研究了反应温度、钙硅比、碱液浓度、液固比、反应时间等因素对镓浸出效果的影响。综合镓的浸出率以及反应成本等因素, 确立了浸出镓的最优条件为:反应温度180 ℃、钙硅比1∶1、碱液浓度200 g/L、液固比20∶1、反应时间3.0 h。在最优条件下, 粉煤灰中镓浸出率可达87.84%。
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| 关 键 词： | 粉煤灰 镓 碱溶 水热法 |
| 收稿时间： | 2016-02-04 |
Extraction of Gallium from Fly Ash by Hydrothermal Process with Alkali Dissolution |
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| XU Meng,XIN Zhi-feng,LI Ting,BAI Lin-shan,DONG Yong-ping,CHU Xiang-feng.Extraction of Gallium from Fly Ash by Hydrothermal Process with Alkali Dissolution[J].Mining and Metallurgical Engineering,2016,36(4):68-71. |
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| Authors: | XU Meng XIN Zhi-feng LI Ting BAI Lin-shan DONG Yong-ping CHU Xiang-feng |
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| Affiliation: | School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, Anhui, China |
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| Abstract: | Calcined fly ash(CFA) was treated by hydrothermal process with alkali dissolution. Both single-factor and multiple-factor experiments were performed to explore the effects of reaction temperature, calcium-silicon ratio, solid-liquid ratio, alkali liquor concentration and reaction time on the extraction rate of gallium from CFA. With factors, such as extraction rate of gallium, reaction cost, taken into a comprehensive consideration, the best extraction conditions were established as follows, including reaction temperatures of 180 ℃, calcium-silicon ratio at 1∶1, alkali liquor concentration of 200 g/L, solid-liquid ratio at 20∶1 and reaction time of 3.0 h, leading to the extraction rate of gallium from the fly ash up to 87.84%. |
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| Keywords: | fly ash gallium alkaline dissolution hydrothermal process |
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