Journal of Central South University

, Volume 21, Issue 12, pp 4450–4455 | Cite as

Direct spray pyrolysis of aluminum chloride solution for alumina preparation

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


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.

Key words

spray pyrolysis aluminum chloride solution γ-Al2O3 phase transformation 


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Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Guo-zhi Lü (吕国志)
    • 1
  • Ting-an Zhang (张廷安)
    • 1
    Email author
  • Long Wang (王龙)
    • 1
  • Si-da Ma (马思达)
    • 1
  • Zhi-he Dou (豆志河)
    • 1
  • Yan Liu (刘燕)
    • 1
  1. 1.Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ore of Ministry of Education, School of Materials and MetallurgyNortheastern UniversityShenyangChina

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