Abstract
Experimental laboratory methods have been developed that enable phase-equilibria studies to be carried out on slags in the system Ca-Cu-Fe-O in equilibrium with metallic copper. These techniques involve equilibration at temperature, rapid quenching, and chemical analysis of the phases using electron-probe X-ray microanalysis (EPMA). Equilibration experiments have been carried out in the temperature range of 1150 °C to 1250 °C (1423 to 1523 K) and in the composition range of 4 to 80 wt pct “Cu2O,” 0 to 25 wt pct CaO, and 20 to 75 wt pct “Fe2O3” in equilibrium with metallic copper. Liquidus and solidus data are reported for the primary-phase fields of spinel (magnetite) and dicalcium ferrite. The resulting data have been used to construct liquidus isotherms of the CaO-“Cu2O”-“Fe2O3” system at metallic copper saturation.
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Ilyushechkin, A., Hayes, P.C. & Jak, E. Liquidus temperatures in calcium ferrite slags in equilibrium with molten copper. Metall Mater Trans B 35, 203–215 (2004). https://doi.org/10.1007/s11663-004-0022-8
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DOI: https://doi.org/10.1007/s11663-004-0022-8