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Metallurgical and Materials Transactions B

Phase Equilibria of Ferrous-Calcium Silicate Slags in the Liquid/Spinel/White Metal/Gas System for the Copper Converting Process

  • 22-06-2020
Published in:
Authors
Yongqi Sun
Mao Chen
Zhixiang Cui
Leonel Contreras
Baojun Zhao
Published in
Metallurgical and Materials Transactions B | Issue 5/2020

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Abstract

Ferrous calcium silicate (FCS) slags are reported to have high potential for use in the copper converting process. However, no phase equilibrium study has been carried out under a simulated converting gas atmosphere in the presence of SO2. In this study, under accurately controlled P(SO2) 0.4 atm and P(O2) 10−6 atm, the phase equilibria of FCS slags in a liquid/spinel/white metal/gas system were investigated for the copper converting process. The liquidus temperatures of slags in the Fe-Ca-Cu-Si-S-O system were quantified as well as the solid solubilities of Cu2O in the spinel phase. The experimental results were compared with the FactSage predictions, which provided clues for further improvement of the thermodynamic modelling. The applications of the FCS slags were further discussed and compared with iron silicate slags. The results obtained will contribute to slag development for converting operations and thermodynamic calculations.

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previous article Determination of Area Fraction of Free Lime in Steelmaking Slag Using Cathodoluminescence and X-ray Excited Optical Luminescence
next article Structure and Viscosity of Molten CaO-SiO2-FexO Slag During the Early Period of Basic Oxygen Steelmaking
Title
Phase Equilibria of Ferrous-Calcium Silicate Slags in the Liquid/Spinel/White Metal/Gas System for the Copper Converting Process
Authors
Yongqi Sun
Mao Chen
Zhixiang Cui
Leonel Contreras
Baojun Zhao
Publication date
22-06-2020
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 5/2020
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-020-01887-9
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