| Aluminum Reduction and Nitridation of Bauxite |
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| 作者姓名： | ZHANG Zhikuan ZHANG Dianwei XU Enxia HOU Xinmei DONG Yanling |
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| 作者单位： | [1]Henan Xinmi Wanli Industrial General Company, Xinmi 450052, China [2]The State Laboratory for Advanced 1 ＆ S Processes and Products Central I ＆ S Research Institute, China [3]The Henan Province Key Laboratory of High Temperature Ceramics, Henan 450052, China [4]Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, China [5]China Aerospace Construction Engineering Corporation, China |
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| 摘 要： | The application of bauxite with low Al2O3 content has been studied in this paper and β-SiAlON has been obtained from two kinds of bauxites (Al2O3 content 68.08 mass% and 46.30 mass% respectively) by aluminum reduction and nitridation method. The sequence of reactions has been studied using thermal analysis (TG-DTA), X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) with EDS. Compared with carbon thermal reduction and nitridation of aluminosilicates employed presently, the reaction in the system of bauxite-Al-N2 occurs at lower temperature. β-SiAlON appears as one of the main products from 1573K and exists stably in the range of the present experimental temperature. The microstructure of β-SiAlON obtained at 1773 K is short column with 5-10μm observed by SEM.
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| 关 键 词： | β-SiAlON |
| 修稿时间： | 2006-12 |
Aluminum Reduction and Nitridation of Bauxite |
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| ZHANG Zhikuan ZHANG Dianwei XU Enxia HOU Xinmei DONG Yanling.Aluminum Reduction and Nitridation of Bauxite[J].China’s Refractories,2007,16(2):22-27. |
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| Authors: | ZHANG Zhikuan ZHANG Dianwei XU Enxia HOU Xinmei DONG Yanling |
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| Abstract: | |
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| Keywords: | SiAlON Bauxite Aluminum reduction and nitridation |
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