Combustion characteristics of the heat pellet prepared from the Fe powders obtained by spray pyrolysis

J. H. Kim, H. Y. Koo, S. K. Hong, J. M. Han, H. C. Jang, Y. N. Ko, Y. J. Hong, Yun Chan Kang, S. H. Kang, S. B. Cho

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Fe powders for thermal batteries were prepared by reduction of iron oxide powders obtained by spray pyrolysis. The iron oxide powders prepared by spray pyrolysis had fine size, spherical shape and high surface area. The morphologies of the Fe powders were affected by the preparation temperatures of the iron oxide powders. The Fe powders obtained from the iron oxide powders prepared by spray pyrolysis at 900 and 1000 °C had slightly aggregated structure of the primary powders with several microns sizes. The powders had pure Fe phases at reducing temperatures between 600 and 800 °C. The heat pellets with diameter of 18.2 mm were prepared using Fe powders and potassium perchlorate (KClO 4 ). The porosity of the prepared heat pellet was about 40%. The break strength of the heat pellet was 0.9 kgf. The ignition sensitivity of the heat pellet was 4 W. The maximum burn rate of the heat pellet obtained from the Fe powders were 8.6 cm s -1 .

Original languageEnglish
Pages (from-to)387-392
Number of pages6
JournalAdvanced Powder Technology
Volume23
Issue number3
DOIs
Publication statusPublished - 2012 May 1
Externally publishedYes

    Fingerprint

Keywords

  • Fe powders
  • Heat pellet
  • Spray pyrolysis
  • Thermal battery

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanics of Materials

Cite this

Kim, J. H., Koo, H. Y., Hong, S. K., Han, J. M., Jang, H. C., Ko, Y. N., Hong, Y. J., Kang, Y. C., Kang, S. H., & Cho, S. B. (2012). Combustion characteristics of the heat pellet prepared from the Fe powders obtained by spray pyrolysis. Advanced Powder Technology, 23(3), 387-392. https://doi.org/10.1016/j.apt.2011.05.004