Thermal plasma dissociation offers a convenient and attractive route to prepare zirconium oxide from zircon mineral. Transferred and non-transferred arc plasma torches have been used to study zircon dissociation. The major thrust has been to accomplish complete dissociation and make the process simpler and cost effective. Technologically, this has been attempted in argon-fired plasma reactors using higher electrical power. The present work reports a cost effective low power transferred arc plasma (TAP) processing method for dissociating zircon by using air as the plasma forming gas. Phase composition and microstructure formation of the dissociated zircon were examined by XRD and SEM with EDX. Experimental results showed that the torch input power and processing time strongly influenced the dissociation percentage as well as the microstructure formation. Further, obtained results revealed that the air plasma medium significantly improved the percentage of zircon dissociation rather than argon plasma medium at 10 and 15 kW power levels. The air plasma gives complete zircon dissociation at 10 kW power with 5 min of processing.

Zircon dissociation in air plasma through a low power transferred arc plasma torch / Yugeswaran, S.; Ananthapadmanabhan, P. V.; Lusvarghi, Luca. - In: CERAMICS INTERNATIONAL. - ISSN 0272-8842. - STAMPA. - 41:1 Part A(2015), pp. 265-273. [10.1016/j.ceramint.2014.08.068]

Zircon dissociation in air plasma through a low power transferred arc plasma torch

LUSVARGHI, Luca
2015

Abstract

Thermal plasma dissociation offers a convenient and attractive route to prepare zirconium oxide from zircon mineral. Transferred and non-transferred arc plasma torches have been used to study zircon dissociation. The major thrust has been to accomplish complete dissociation and make the process simpler and cost effective. Technologically, this has been attempted in argon-fired plasma reactors using higher electrical power. The present work reports a cost effective low power transferred arc plasma (TAP) processing method for dissociating zircon by using air as the plasma forming gas. Phase composition and microstructure formation of the dissociated zircon were examined by XRD and SEM with EDX. Experimental results showed that the torch input power and processing time strongly influenced the dissociation percentage as well as the microstructure formation. Further, obtained results revealed that the air plasma medium significantly improved the percentage of zircon dissociation rather than argon plasma medium at 10 and 15 kW power levels. The air plasma gives complete zircon dissociation at 10 kW power with 5 min of processing.
27-ago-2014
41
1 Part A
265
273
Zircon dissociation in air plasma through a low power transferred arc plasma torch / Yugeswaran, S.; Ananthapadmanabhan, P. V.; Lusvarghi, Luca. - In: CERAMICS INTERNATIONAL. - ISSN 0272-8842. - STAMPA. - 41:1 Part A(2015), pp. 265-273. [10.1016/j.ceramint.2014.08.068]
Yugeswaran, S.; Ananthapadmanabhan, P. V.; Lusvarghi, Luca
File in questo prodotto:
File Dimensione Formato  
1060338.pdf

accesso aperto

Tipologia: Post-print dell'autore (bozza post referaggio)
Dimensione 1.92 MB
Formato Adobe PDF
1.92 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1060338
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 10
social impact