Plotting and application of predominance area diagram of Me-S-O system based on topological rules

Abstract

The mathematical topological rule was applied to plot the predominance area diagram. Based on the analysis of the mutually conjugated, only two diagrams were the best topological embryonic graphs to build the predominance area diagram of Me-S-O system. Combined with topological rules and thermodynamic calculation, four relation-diagrams were denoted as α and β stable and unstable plane-topological diagrams, which were plotted for the Pb-S-O system and Zn-S-O system. The results show that β stable plane-topological diagram of Pb-S-O system and α stable one of Zn-S-O system are in accordance with the traditional predominance area diagram, which indicates that it is feasible to plot the predominance area diagram based on mathematical topological rules. Meanwhile, α unstable plane-topological diagram of Pb-S-O system can elucidate the phenomenon that metallic lead exists in higher oxygen and sulfur pressure area in modern bath smelting furnace. The mathematical topological rules broaden the application scope of the predominance area diagram and enrich the practice of its plotting.

Keywords

Me-S-O system / predominance area diagram / topological rules / thermodynamic calculation / bath smelting

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