| 高碳铁液中的Al-C-O平衡 |
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| 引用本文： | 李宁, 郭汉杰, 张鑫. 高碳铁液中的Al-C-O平衡[J]. 工程科学学报, 2011, 33(S1): 73-76. DOI: 10.13374/j.issn1001-053x.2011.s1.019 |
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| 作者姓名： | 李宁 郭汉杰 张鑫 |
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| 作者单位： | 1.北京科技大学钢铁冶金新技术国家重点实验室, 北京 100083 |
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| 摘 要： | 为了促进铁水脱硫,在铁水预处理过程中加Al脱氧,由于铁水中C含量很高,Al、C同时存在于铁水中.研究了铁水中生成Al4C3的判定条件,分析了Al4C3的生成对Al脱氧的影响.利用热力学方法,计算了aAl4·aC3的值,从而对Al-C-O三相平衡进行了分析,通过得出的aAl4·aC3值绘制了Al-C平衡曲线,并进行了相关讨论,以确定Al4C3的生成范围.
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| 关 键 词： | 铁水 铝 碳化物 脱氧 活度系数 热力学 |
| 收稿时间： | 2011-07-10 |
Equilibrium of Al-C-O in high-carbon molten iron |
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| LI Ning, GUO Han-jie, ZHANG Xin. Equilibrium of Al-C-O in high-carbon molten iron[J]. Chinese Journal of Engineering, 2011, 33(S1): 73-76. DOI: 10.13374/j.issn1001-053x.2011.s1.019 |
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| Authors: | LI Ning GUO Han-jie ZHANG Xin |
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| Affiliation: | 1.State Key Laboratory of Advanced Metallury, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | In order to promote hot metal desulphurization,Al is used to deoxidize during molten iron pretreatment. Because of the high carbon content of hot metal,Al and C exist in hot metal simultaneously. Determinant conditions of Al4C3 precipitation were investigated and the effect of Al4C3 on aluminum deoxidation was analyzed. The value of aAl4·aC3 product was calculated by using a thermodynamic method and then the equilibrium of Al-C-O was studied. According to the calculated value of aAl4·aC3 product,the Al-C equilibrium curve was plotted and the equilibrium was analyzed to determine the composition range in which Al4C3 can precipitate from hot metal. |
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| Keywords: | molten iron aluminum carbides deoxidation activity coefficients thermodynamics |
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