| Extraction of Aluminum and Iron from Boiler Slag by Sulfuric Acid |
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| 引用本文： | LI Jinping HOU Haoboi GAN Jinhua ZHU Shujing XIE Yongjie. Extraction of Aluminum and Iron from Boiler Slag by Sulfuric Acid[J]. 武汉大学学报:自然科学英文版, 2007, 12(3): 541-547. DOI: 10.1007/s11859-006-0071-8 |
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| 作者姓名： | LI Jinping HOU Haoboi GAN Jinhua ZHU Shujing XIE Yongjie |
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| 作者单位： | [1]School of Resource and Environmental Science, Wuhan University, Wuhan 430079, Hubei, China [2]Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Jingzhou 434000, Hubei, China |
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| 基金项目： | Supported by the Communication, Science and Education Foundation of Hubei Province（2005-570） |
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| 摘 要： | This paper presents a new method of recycling aluminum and iron in boiler slag derived from plants that use coal as fuel. The new method integrates efficient extraction and reuse of the leached pellets together. An elemental analysis of aqueous solutions leached by sulfuric acid was determined by EDTA-Naz-ZnCl2 titration method. The components and microstructures of the samples were examined by means of XRF, XRD and SEM. An aluminum extraction efficiency of 86.50% was achieved when the sintered pellets were leached using 4 mol · L^- 1 H2SO4 at solid/ liquid [m（g）/V（mL）] ratio of 1 ： 5 at 80 ℃ for 24 h. An iron extraction efficiency of 94.60% was achieved in the same conditions for the maximum extraction efficiency of Al. The extraction efficiencies of Al and Fe increased with an increase in temperature, leaching time and acidity. The concentration of alumina and iron hydroxide in the final product was determined to be 99.12% and 92.20% respectively. This product of alumina would be used directly for the production of metallic aluminum.
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| 关 键 词： | 炉渣 铝 铁 硫酸 萃取 |
| 文章编号： | 1007-1202（2007）03-0541-07 |
| 收稿时间： | 2006-06-22 |
| 修稿时间： | 2006-06-22 |
Extraction of aluminum and iron from boiler slag by sulfuric acid |
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| Li Jinping,Hou Haobo,Gan Jinhua,Zhu Shujing,Xie Yongjie. Extraction of aluminum and iron from boiler slag by sulfuric acid[J]. Wuhan University Journal of Natural Sciences, 2007, 12(3): 541-547. DOI: 10.1007/s11859-006-0071-8 |
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| Authors: | Li Jinping Hou Haobo Gan Jinhua Zhu Shujing Xie Yongjie |
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| Affiliation: | (1) School of Resource and Environmental Science, Wuhan University, Wuhan, 430079, Hubei, China;(2) Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Jingzhou, 434000, Hubei, China |
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| Abstract: | This paper presents a new method of recycling aluminum and iron in boiler slag derived from plants that use coal as fuel. The new method integrates efficient extraction and reuse of the leached pellets together. An elemental analysis of aqueous solutions leached by sulfuric acid was determined by EDTA-Na2-ZnCl2 titration method. The components and microstructures of the samples were examined by means of XRF, XRD and SEM. An aluminum extraction efficiency of 86.50% was achieved when the sintered pellets were leached using 4 mol · L−1 H2SO4 at solid/ liquid [m(g)/V(mL)] ratio of 1: 5 at 80 °C for 24 h. An iron extraction efficiency of 94.60% was achieved in the same conditions for the maximum extraction efficiency of Al. The extraction efficiencies of Al and Fe increased with an increase in temperature, leaching time and acidity. The concentration of alumina and iron hydroxide in the final product was determined to be 99.12% and 92.20% respectively. This product of alumina would be used directly for the production of metallic aluminum. Biography: LI Jinping (1979–), male, Ph.D. candidate, research direction: further utilization of industrial slag. |
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| Keywords: | boiler slag Al extraction efficiency Fe extraction efficiency leaching alumina |
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