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Title: Spinel saturation of a PbO based slag as a method to mitigate the chemical degradation of magnesia-chromite bricks
Authors: Scheunis, Lennart ×
Campforts, Mieke
Jones, Peter Tom
Blanpain, Bart
Malfliet, Annelies #
Issue Date: 2016
Publisher: Elsevier Science Publishers
Series Title: Journal of the European Ceramic Society vol:36 issue:16 pages:4291-4299
Abstract: For nonferrous smelters, the chemical wear of the magnesia-chromite bricks caused by the direct contactwith the slag leads to regular replacement of the lining before complete failure. This is a costly and time intensive procedure. Increasing the lining’s lifetime, by reducing the chemical wear, would result in are duction of both the installation cost and the production losses. In this paper, the potential of changing the slag composition to limit the chemical dissolution rate by saturating the slag in spinel components is investigated by isothermal static finger tests. When saturating the slag in spinel by adding Fe2O3, a spinel layer forms at the interface between the refractory sample and the liquid slag. As the dissolution of MgO from the refractory in the slag is now controlled by solid state diffusion through the new spinel layer, the chemical wear rate is substantially decreased, thereby increasing the lifetime of the lining.
ISSN: 0955-2219
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Sustainable Metals Processing and Recycling
× corresponding author
# (joint) last author

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