| 真空AlCl歧化法生产铝的过程中C、Al4C3和Al2O3的形成热力学 |
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| 引用本文： | 冯月斌,杨斌,戴永年.真空AlCl歧化法生产铝的过程中C、Al4C3和Al2O3的形成热力学[J].中国有色金属学会会刊,2014,24(10):3366-3371. |
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| 作者姓名： | 冯月斌 杨斌 戴永年 |
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| 作者单位： | 昆明理工大学 |
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| 基金项目： | Project(51364020)supported by the National Natural Science Foundation of China |
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| 摘 要： | 通过热力学分析研究了真空Al Cl歧化法生产铝的过程中C、Al4C3和Al2O3的形成条件。结果表明,形成这些杂质的反应,即CO的歧化反应和金属铝与CO的反应,所需的反应温度随着压力的降低而降低。金属铝-CO体系的lg pCO-1/T图与实验结果相符,表明反应速率快,该体系在真空下接近平衡,该平衡图可以用来预测该体系在真空下可能的反应。
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| 关 键 词： | Al Al Cl Al2O3 Al4C3 歧化 真空 |
| 收稿时间： | 11 November 2013 |
Thermodynamics on formation of C,Al4C3 and Al2O3 in AlCl disproportionation process in vacuum to produce aluminum |
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| Yue-bin FENG,Bin YANG,Yong-nian DAI.Thermodynamics on formation of C,Al4C3 and Al2O3 in AlCl disproportionation process in vacuum to produce aluminum[J].Transactions of Nonferrous Metals Society of China,2014,24(10):3366-3371. |
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| Authors: | Yue-bin FENG Bin YANG Yong-nian DAI |
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| Affiliation: | Yue-bin FENG,Bin YANG,Yong-nian DAI(1. Faculty of Science, Kunming University of Science and Technology, Kunming 650500, China; 2. National Engineering Laboratory of Vacuum Metallurgy, Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China) |
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| Abstract: | The formation conditions of C, Al4C3 and Al2O3 in the Al Cl disproportionation process in vacuum to produce aluminum was investigated by thermodynamics analysis. It is demonstrated that the required temperatures for the reactions to form these impurities, the disproportionation of CO and the reactions of metallic aluminum with CO, decrease with decreasing pressure. The lg pCO-1/T diagram of metallic aluminum-CO system agrees with the experimental results, indicating that the reaction rate is very high and this system in vacuum is approximately in equilibrium; therefore, the equilibrium diagram can be used to predict the possible reactions in this system in vacuum. |
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| Keywords: | Al AlCl Al2O3 Al4C3 disproportionation vacuum |
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