Effect of CaO/SiO<inf>2</inf> and Fe/SiO<inf>2</inf> ratios on phase equilibria in PbO-ZnO-CaO-SiO<inf>2</inf>-"Fe<inf>2</inf>O <inf>3</inf>" system in air

M. Perez-Labra, A. Romero-Serrano, A. Hernandez-Ramirez, I. Almaguer-Guzman, R. Benavides-Perez

Research output: Contribution to journalArticle

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Abstract

Experimental studies on phase equilibria and liquidus temperature in the PbO-ZnO-CaO-SiO2-"Fe2O3" system, with the mass ratios of CaO/SiO2=1-1.6 and Fe/SiO2= 1.3-1.7, and 40 PbO and 8 ZnO, were carried out between 1273 and 1573 K. Slags were equilibrated at 1273 to 1573 K and cooled rapidly by quenching. The XRD and SEM-EDS results showed that the slag compositions are in the franklinite primary phase field. Calcium and lead silicates are formed between 1373 and 1473 K. The Ca/Pb silicate and magnetoplumbite phases are partially formed by an incongruent reaction. The experimental and thermodynamical results showed that the liquidus increased by increasing CaO/SiO2 mass ratio and decreasing Fe/SiO2 mass ratio. © 2012 The Nonferrous Metals Society of China.
Original languageAmerican English
Pages (from-to)665-674
Number of pages597
JournalTransactions of Nonferrous Metals Society of China (English Edition)
DOIs
StatePublished - 1 Mar 2012
Externally publishedYes

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