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Direct spray pyrolysis of aluminum chloride solution for alumina preparation

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Abstract

The effects of pyrolysis mode and pyrolysis parameters on Cl content in alumina were investigated, and the alumina products were characterized by XRD, SEM and ASAP. The experimental results indicate that the spray pyrolysis efficiency is higher than that of static pyrolysis process, and the reaction and evaporation process lead to a multi-plot state of the alumina products by spray pyrolysis. Aluminum phase starts to transform into γ-Al2O3 at spray pyrolysis temperature of 600 °C, which is about 200 °C lower than that of static pyrolysis process. The primary particle size of γ-Al2O3 product is 27.62 nm, and Cl content in alumina products is 0.38% at 800 °C for 20 min.

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Authors and Affiliations

  1. Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ore of Ministry of Education, School of Materials and Metallurgy, Northeastern University, Shenyang, 110004, China

    Guo-zhi Lü  (吕国志), Ting-an Zhang  (张廷安), Long Wang  (王龙), Si-da Ma  (马思达), Zhi-he Dou  (豆志河) & Yan Liu  (刘燕)

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  1. Guo-zhi Lü  (吕国志)
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  2. Ting-an Zhang  (张廷安)
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  3. Long Wang  (王龙)
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  4. Si-da Ma  (马思达)
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  5. Zhi-he Dou  (豆志河)
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  6. Yan Liu  (刘燕)
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Corresponding author

Correspondence to Ting-an Zhang  (张廷安).

Additional information

Foundation item: Projects(U1202274, 51004033, 51204040) supported by the National Natural Science Foundation of China; Project(2012AA062303) supported by the National High Technology Research and Development Program of China; Project(2012BAE01B02) supported by the National Science and Technology Support Program of China; Project(L2014096) supported by the Education Department of Liaoning Province, China; Project(N130702001) supported by the Fundamental Research Funds for the Central Universities, China

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Lü, Gz., Zhang, Ta., Wang, L. et al. Direct spray pyrolysis of aluminum chloride solution for alumina preparation. J. Cent. South Univ. 21, 4450–4455 (2014). https://doi.org/10.1007/s11771-014-2448-8

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  • DOI: https://doi.org/10.1007/s11771-014-2448-8

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