| 含钛炉渣中TiO_2还原动力学机理 |
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| 引用本文： | 胡长庆,韩伟刚,姚少巍,张志霞. 含钛炉渣中TiO_2还原动力学机理[J]. 钢铁研究学报, 2011, 23(9): 12-15 |
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| 作者姓名： | 胡长庆 韩伟刚 姚少巍 张志霞 |
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| 作者单位： | 1. 河北联合大学冶金与能源学院,河北唐山,063009
2. 河北联合大学材料学院,河北唐山,063009 |
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| 基金项目： | 河北省自然科学基金-钢铁联合基金资助项目(E2008000402) |
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| 摘 要： | 在升温速率分别为5、10、15 K.min-1的条件下,采用综合热分析仪,对含钛高炉渣中的TiO2还原动力学进行研究,分别采用Starink法和Bosswell法计算TiO2还原反应的活化能,并探讨了氩气氛中含钛高炉渣中的TiO2的还原机理。结果表明：渣中TiO2的还原分两阶段进行,反应活化能分别为619.86~624...
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| 关 键 词： | 二氧化钛 动力学 反应机理 TG-DTG |
Research on the Kinetic Mechanism of TiO_2 Reduction in TiO_2-Containing Slag |
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| HU Chang-qing,HAN Wei-gang,YAO Shao-wei,ZHANG Zhi-xia. Research on the Kinetic Mechanism of TiO_2 Reduction in TiO_2-Containing Slag[J]. Journal of Iron and Steel Research, 2011, 23(9): 12-15 |
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| Authors: | HU Chang-qing HAN Wei-gang YAO Shao-wei ZHANG Zhi-xia |
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| Affiliation: | HU Chang-qing1,HAN Wei-gang1,YAO Shao-wei2,ZHANG Zhi-xia1(1.College of Metallurgy and Energy,Hebei United University,Tangshan 063009,Hebei,China,2.College of Material,China) |
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| Abstract: | The reduction mechanism of TiO2 in blast furnace slag was investigated at heating rate of 5, 10 and 15K·min-1 using a simultaneous thermalgravimetric analyzer. The activation energy of the reaction was calculated by Starink equation and Bosswell equation and the reduction mechanism of TiO2 in slag under Ar atmosphere was discussed. The results show that the reduction of TiO2 includes two steps with the activation energy of 619.86-624.374kJ·mol-1 and 423.308-436.723kJ·mol-1, whose mechanism accords with Aevrami-Erofeevfor equation and one-dimensional interface reaction model respectively. |
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| Keywords: | titanium dioxide kinetics reaction mechanism TG-DTG |
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