Abstract

MILLS, K.C; YUAN, L  and  JONES, R.T. Estimating the physical properties of slags. J. S. Afr. Inst. Min. Metall. [online]. 2011, vol.111, n.10, pp.649-658. ISSN 2411-9717.

SYNOPSIS The objective of this work was to provide process engineers with values of the physical properties of various slag systems involved in high-temperature processes. Software that calculates the thermophysical properties of slags from chemical composition is available on the www.pyrometallurgy.co.za website. This paper outlines the principles underlying the various models available in the program. The software calculates the following properties of crystalline, glassy, and liquid slags (where appropriate) as a function of temperature: heat capacity, enthalpy, density, viscosity, thermal conductivity, electrical conductivity, and surface tension. We hope, in the future, to update the program to (i) add new models as they become available, (ii) remove any 'bugs' discovered in existing programs, and (iii) provide guidance on the limitations of individual programs.

Keywords : pyrometallurgy; molten; slag; physical properties; heat capacity; enthalpy; density; viscosity; thermal conductivity; electrical conductivity; surface tension.

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