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Phase equilibria and thermodynamics in the lead-lead sulphide system

Eric, R.H. & Timucin, M.

Journal of the South African Institute of Mining and Metallurgy, 1988-11, Vol.88 (11), p.353-361

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Título:
Phase equilibria and thermodynamics in the lead-lead sulphide system
Autor: Eric, R.H. & Timucin, M.
Assuntos: continuous direct smelting ; lead extraction ; lead refining ; lead-lead sulphide system ; liquid-miscibility gap ; phase equilibria ; thermodynamics properties
É parte de: Journal of the South African Institute of Mining and Metallurgy, 1988-11, Vol.88 (11), p.353-361
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: High-temperature phase relations in the Pb-PbS system were established by the quenching of samples equilibrated in evacuated and sealed silica capsules. The liquid-miscibility gap seen in some previously published phase diagrams was not observed. The thermodynamic activities of PbS in liquid solutions of this system were derived at 1473 K from the isopiestic equilibration of samples belonging to this solution series with Cu2S-PbS melts of known PbS activities. The behaviour of Pb-PbS melts was found to be compatible with a subregular solution model. This model also made it possible to obtain an analyticalliquidus for PbS that was in excellent agreement with the experimental determination.
Editor: Southern African Institute of Mining and Metallurgy
Idioma: Inglês

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