Revision of quasi-chemical viscosity model for viscosity estimation of molten multi-component oxide slag

Suzuki, Masanori and Jak, Evgueni (2012). Revision of quasi-chemical viscosity model for viscosity estimation of molten multi-component oxide slag. In: Proceedings of the Ninth International Conference on Molten Slags, Fluxes and Salts (MOLTEN12). Ninth International Conference on Molten Slags, Fluxes and Salts (MOLTEN12), Beijing, China, (). 27-30 May 2012.

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Name Description MIMEType Size Downloads
Author Suzuki, Masanori
Jak, Evgueni
Title of paper Revision of quasi-chemical viscosity model for viscosity estimation of molten multi-component oxide slag
Conference name Ninth International Conference on Molten Slags, Fluxes and Salts (MOLTEN12)
Conference location Beijing, China
Conference dates 27-30 May 2012
Proceedings title Proceedings of the Ninth International Conference on Molten Slags, Fluxes and Salts (MOLTEN12)
Place of Publication Beijing, China
Publisher The Chinese Society for Metals
Publication Year 2012
Sub-type Fully published paper
Total pages 15
Collection year 2013
Language eng
Formatted Abstract/Summary
A quasi-chemical viscosity model (QCV) had been previously developed that enables the viscosities of multicomponent molten oxide slags to be predicted within experimental uncertainties over wide ranges of composition and temperature. The Eyring equation is used to express viscosity as a function of composition and temperature. The QCV model links the vaporisation and activation energies to the slag internal structure through the concentrations of various Si0.5O, Men+2/nO and Men+ 1/nSi0.25O viscous flow structural units. The concentrations of these structural units are derived from a quasi-chemical thermodynamic model of the liquid slag. In the present study, the quasi-chemical viscosity model formalism has been revised, and a number of shortcomings in the previous model have been resolved.

The links between model parameters and fundamental physical properties or structural characteristics of oxide melts have been introduced with reference to physical basis of the model. Agreement with the available experimental viscosity data has been improved. The QCV model parameters have been successfully extended to the multicomponent SiO2 - Al2O3 - CaO - MgO - Na2O - K2O - ‘FeO’ - Fe2O3 - PbO - ZnO system, and over 7000 experimental viscosity data in this system have been reproduced within 25 % as the average of the relative errors.
Keyword Viscosity
Model
Multi-component oxide systems
Viscous flow structural unit
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Paper W068.

Document type: Conference Paper
Collections: School of Chemical Engineering Publications
Official 2013 Collection
 
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Created: Thu, 11 Apr 2013, 22:45:37 EST by Professor Evgueni Jak on behalf of School of Chemical Engineering