Thermodynamic properties of Ni-S melts between 700° and 1100°c |
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| Authors: | M Nagamori T R Ingraham |
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| Affiliation: | (1) National Research Coun-cil of Canada, Ottawa, Canada;(2) Extraction Metallurgy Research Section, Mines Branch, Department of Energy, Mines and Resources, Ottawa |
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| Abstract: | The vapor pressure of sulfur over Ni-S melts of various compositions was calculated from the equilibrium weight of the melt
in gas streams of known H2S-H2 composition. The Gibbs-Duhem equation was used to calculate the activity of nickel and other thermodynamic properties. For
the reaction: 3Ni(S) + S2(g) ⇌ Ni3S2(l) the suggested free energy rslationship is: ΔG° = -57,910 + 15.89T (800° to 1100°C). The Calculations were extrapolated to predict that for the reaction: Ni(s) + 1/2S2(g) ⇌ NiS(l), ΔG° = -26.730 + 10.5T (1000° to 1100°C) |
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