Numerical validation of microwave heated fluidised bed calcination of waste containing ceramic powders

Vegh, V., Turner, I. W., Sizgek, E. and Sizgek, D. (2003). Numerical validation of microwave heated fluidised bed calcination of waste containing ceramic powders. In: The ANZIAM Journal: Electronic Supplement. Proceedings Computational Techniques and Applications Conference. The Eleventh Biennial Computational Techniques and Applications Conference (CTAC2003), Sydney, Australia, (C34-C49). 7-9 July 2003. doi:10.0000/anziamj.v45i0.871

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Author Vegh, V.
Turner, I. W.
Sizgek, E.
Sizgek, D.
Title of paper Numerical validation of microwave heated fluidised bed calcination of waste containing ceramic powders
Conference name The Eleventh Biennial Computational Techniques and Applications Conference (CTAC2003)
Conference location Sydney, Australia
Conference dates 7-9 July 2003
Proceedings title The ANZIAM Journal: Electronic Supplement. Proceedings Computational Techniques and Applications Conference   Check publisher's open access policy
Place of Publication Canberra, Australia
Publisher Cambridge University Press for the Australian Mathematics Society
Publication Year 2003
Sub-type Fully published paper
DOI 10.0000/anziamj.v45i0.871
Open Access Status DOI
ISSN 1446-8735
1445-8810
Volume 45
Start page C34
End page C49
Total pages 16
Language eng
Formatted Abstract/Summary
This study corresponds to the first phase of the development of a microwave heated fluidised bed for calcination of waste (metal nitrate salts) containing ceramic powders under H2/N2 reducing atmosphere. The power is delivered through the top end of the calciner at 2.45 GHz. Apart from the experimental investigations, the study also involved microwave analysis to approximately predict the mode numbers corresponding to specific solutions of the characteristic field equations in the cavity as a function of powder bed height. The calculations reveal the dominant modes expected to propagate in the calciner. Here, a finite-volume time-domain technique simulates the electromagnetic phenomena inside the empty and loaded calciner. Because of the geometry of the calciner, special stair-case type boundary conditions ensure accurate calculations of the fields at the cylindrical conducting walls of the cavity. The simulation results confirm the experimentally observed mode structure inside the calciner. Thus the numerical technique can capture the nature of the modes in the case when the calciner is empty and loaded with a ceramic powder.
Subjects 0102 Applied Mathematics
Keyword Microwave heating
Fluidised bed calcination
Waste
Ceramic powders
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

 
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Created: Wed, 20 Jan 2010, 12:47:19 EST by Jon Swabey on behalf of Faculty of Science