Thermal treatment of Al2O3, MgO, and CeO2 granulated powders by induction thermal plasma: A numerical approach

M. Mofazzal Hossain, M. Rafiqul Alam, Takayuki Watanabe

研究成果: ジャーナルへの寄稿記事

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A plasma-particle interactive flow model has been developed for the investigation of plasma temperature, velocity, particle temperature, diameter, and flight path during in-fight thermal treatment of granulated powders-Al 2O3, MgO, and CeO2 in induction thermal plasma, taking into account of plasma particle interaction and particle loading effects. In this model, the conservative equations are solved to investigate the influence of feedrate and particle diameter on the melting behavior of granulated powders and to predict particle trajectories, temperature histories etc. In this paper attention is given to the effects of carrier gas flow-rate, powder feed-rate and secondary gas (oxygen) flow-rate on the particles' final diameter and trajectory for Al2O3, MgO, and CeO 2 powders. Results show that the particles diameter after thermal treatment is strongly dependent on the powder feed-rate, oxygen gas flow-rate and carrier gas flow-rate. Among the three types of powders, particle diameter decrement is significant in case of MgO and less significant in case of Al 2O3; and the effect of oxygen flow-rate on the particle diameter decrement is significant in case of MgO. Particles trajectories are wider for smaller particles than that of larger particles. Particle temperature is lowest for MgO and highest for Al2O3 particles.

元の言語英語
記事番号01AL01
ジャーナルJapanese journal of applied physics
52
発行部数1 PART2
DOI
出版物ステータス出版済み - 1 1 2013
外部発表Yes

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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