Abstract
The reported experimental work on the systems PbOx-CaO and PbOx-CaO-SiO2 in air is part of a wider research program that combines experimental and thermodynamic computer modeling techniques to characterize zinc/lead industrial slags. Extensive experimental investigation by high-temperature equilibration and quenching techniques followed by electron probe microanalysis was carried out in the temperature range 640 °C to 1500 °C (913 to 1773 K) and in the composition ranges 0 to 65 mol pct SiO2 and 0 to 42 mol pct CaO. Liquidus and solidus data were reported for most of the primary phase fields. Liquidus surfaces in the systems CaO-Pb-O and PbOx-CaO-SiO2 in air were completely reconstructed. Extensive solid solutions of PbO in α′ dicalcium silicate and Ca2Pb3Si3O11 were measured.
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