| 粉煤灰中硅酸盐烧结反应过程的研究 |
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| 引用本文： | 佟志芳,康立武,李英杰,杨光华. 粉煤灰中硅酸盐烧结反应过程的研究[J]. 硅酸盐通报, 2009, 28(3): 449-453 |
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| 作者姓名： | 佟志芳 康立武 李英杰 杨光华 |
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| 作者单位： | 江西理工大学材料与化学工程学院,赣州,341000;江西理工大学材料与化学工程学院,赣州,341000;江西理工大学材料与化学工程学院,赣州,341000;江西理工大学材料与化学工程学院,赣州,341000 |
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| 基金项目： | 江西省教育厅资助项目 |
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| 摘 要： | 本实验研究了以KF为助剂粉煤灰焙烧过程中可能发生的化学反应,并以热力学计算为指导,研究了焙烧温度、焙烧时间和m1(粉煤灰):m2(KF)对反应形成酸溶铝的影响.实验结果表明:在焙烧温度1073 K、焙烧时间1h、m1(粉煤灰):m2(KF)为5:1时,粉煤灰中铝的溶解率可达到95.03%.同时对粉煤灰的热分解过程的动力学研究结果表明,该过程符合Crank-Ginstling-Braunshtein方程,由实验结果计算,其表观活化能为136.56 kJ/mol.
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| 关 键 词： | 粉煤灰 烧结反应 热力学 动力学 |
Studies on the Sintering Reactions Process of Coal Fly Ash |
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| TONG Zhi-fang,KANG Li-wu,LI Ying-jie,YANG Guang-hua. Studies on the Sintering Reactions Process of Coal Fly Ash[J]. Bulletin of the Chinese Ceramic Society, 2009, 28(3): 449-453 |
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| Authors: | TONG Zhi-fang KANG Li-wu LI Ying-jie YANG Guang-hua |
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| Affiliation: | School of Materials and Chemical Engineering;Jiangxi University of Science and Technology;Ganzhou 341000;China |
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| Abstract: | The possible chemistry reactions of coal fly ash with KF as additive were studied during the roasting process,and the gibbs energy changes of the reactions were calculated.The effects of acid soluble aluminum on m1(coal fly ash):[KG-2]m2(KF),roasting temperature and time were studied,and the favorable conditions were determined as follow:m1(coal fly ash):[KG-2]m2(KF) = 5:[KG-2]1,1073 K,1 h.Under this condition,The dissolution rate of aluminum is 95.03%.Dynamics of the thermal decompose of coal fly ash were ... |
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| Keywords: | fly ash sintering reaction thermodynamics kinetics |
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