| 机械活化对粉煤灰提铝影响研究 |
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| 引用本文： | 赵兴杰,杨坤,胡途.机械活化对粉煤灰提铝影响研究[J].矿冶工程,2022,42(6):111-114. |
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| 作者姓名： | 赵兴杰 杨坤 胡途 |
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| 作者单位： | 1.昆明理工大学 冶金与能源工程学院, 云南 昆明 650093;
2.云南省特种冶金重点实验室, 云南 昆明 650093;
3.省部共建复杂有色金属资源清洁利用国家重点实验室, 云南 昆明 650093 |
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| 基金项目： | 国家重点研发计划(2019YFC1904204);
云南省中青年学术和技术带头人后备人才(202005AC160033);
云南省万人计划“青年拔尖人才”(YNWRQNBJ-2019-222) |
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| 摘 要： | 为提高粉煤灰中铝提取率, 采用机械活化对粉煤灰进行预处理, 探讨了机械活化对粉煤灰焙烧-酸浸效果的影响。结果表明: 机械活化能提高粉煤灰比表面积、增加反应活性点, 促进活化反应的进行; 通过机械活化, 在Na2CO3与Al2O3物质的量比1.6、850 ℃下焙烧50 min后酸浸, 铝浸出率达到91.58%。
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| 关 键 词： | 机械活化 粉煤灰 物相转变 微观结构 铝 浸出 |
| 收稿时间： | 2022-06-01 |
Effect of Mechanical Activation on Extraction of Aluminum from Fly Ash |
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| ZHAO Xing-jie,YANG Kun,HU Tu.Effect of Mechanical Activation on Extraction of Aluminum from Fly Ash[J].Mining and Metallurgical Engineering,2022,42(6):111-114. |
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| Authors: | ZHAO Xing-jie YANG Kun HU Tu |
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| Affiliation: | 1.School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;
2.Yunnan Provincial Key Laboratory of Special Metallurgy, Kunming 650093, Yunnan, China;
3 State Key Laboratory of Clean Utilization of Complex Nonferrous Metal Resources Jointly Established by Province and Ministry of Education, Kunming 650093, Yunnan, China |
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| Abstract: | Fly ash was pretreated by using mechanical activation for improving the extraction rate of aluminum therein, and the effect of mechanical activation on the process of fly ash roasting followed by acid leaching was explored. It is found that the mechanical activation can increase the specific surface area of fly ash, thus increasing the reactive points and promoting the activation reaction. After mechanical activation, the fly ash is then subjected to roasting at 850 ℃ for 50 min with Na2CO3 and Al2O3 at a molar ratio of 1.6, followed by acid leaching process, leading to the final leaching rate of aluminum up to 91.58%. |
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| Keywords: | mechanical activation fly ash phase transition microstructure aluminum leaching |
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