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Slag Solidification Modeling Using the Scheil–Gulliver Assumptions
Author(s) -
Durinck Dirk,
Jones Peter Tom,
Blanpain Bart,
Wollants Patrick,
Mertens Gilles,
Elsen Jan
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01597.x
Subject(s) - diffusion , phase (matter) , materials science , phase equilibrium , thermodynamics , mineralogy , geology , chemistry , physics , organic chemistry
In this paper, the Scheil–Gulliver approach on solidification modeling is applied to slag solidification. The Scheil–Gulliver model assumes no diffusion in the solid phases, infinitely rapid diffusion in the liquid phase, and local equilibrium at the solid/liquid interface. For two distinct CaO–MgO–SiO 2 slags, solidification is simulated with the Scheil–Gulliver model and with the commonly used thermodynamic equilibrium model. The simulations show that in the Scheil–Gulliver model, as opposed to the equilibrium model, compositional gradients in the solid phases can exist and peritectic reactions do not occur. Solidification experiments are performed under laboratory conditions to validate the simulation results. The experimental results show a better correspondence with the Scheil–Gulliver model than with the equilibrium model. However, quantitative differences in mineralogy persist.