SLAG—software for reconstruction of historical smelting processes based on slag properties

The publication presents the functions of the SLAG software created to recreate historical metallurgical processes. SLAG allows for determining the smelting temperature, the viscosity of the metallurgical melt, and the oxygen and sulfur fugacities during smelting. With software, both liquidus temper...

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Bibliographic Details
Published in:Archaeometry 2024-08, Vol.66 (4), p.803-823
Main Authors: Kupczak, Krzysztof, Warchulski, Rafał
Format: Article
Language:English
Subjects:
historical slags
liquidus temperature
Manufacturing industry
Metallurgy
predominance area diagrams
Slag
Smelting
Sulfur
Transition temperatures
Viscosity
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Summary:The publication presents the functions of the SLAG software created to recreate historical metallurgical processes. SLAG allows for determining the smelting temperature, the viscosity of the metallurgical melt, and the oxygen and sulfur fugacities during smelting. With software, both liquidus temperature and melt viscosity can be calculated using different models, covering the range of chemical compositions of historical slags as wide as possible. Based on thermodynamic calculations, SLAG allows the performance of O2 and S2 fugacity calculations in the temperature range of 1000–2000 K (727–1727°C). The range of applicability of other properties (viscosity and liquidus temperature) depends only on the limitations of individual models. Using SLAG, it is also possible to create predominance area diagrams (PADs) and diagrams that consider the viscosity's dependence on temperature for slag of a given chemical composition. Based on glass transition temperature (Tg) and melt fragility, it is also possible to reconstruct the conditions that prevailed during the various stages of historical glass manufacturing processes.
ISSN:0003-813X
1475-4754
DOI:10.1111/arcm.12940