The effect of phase formation during use on the chemical corrosion of magnesia-chromite refractories in contact with a non-ferrous PbO-SiO2 based slag

Scheunis, L., Fallah Mehrjardi, A., Campforts, M., Jones, P. T., Blanpain, B. and Jak, E. (2014) The effect of phase formation during use on the chemical corrosion of magnesia-chromite refractories in contact with a non-ferrous PbO-SiO2 based slag. Journal of the European Ceramic Society, 34 6: 1599-1610. doi:10.1016/j.jeurceramsoc.2013.12.026


Author Scheunis, L.
Fallah Mehrjardi, A.
Campforts, M.
Jones, P. T.
Blanpain, B.
Jak, E.
Title The effect of phase formation during use on the chemical corrosion of magnesia-chromite refractories in contact with a non-ferrous PbO-SiO2 based slag
Formatted title
The effect of phase formation during use on the chemical corrosion of magnesia-chromite refractories in contact with a non-ferrous PbO-SiO2 based slag
Journal name Journal of the European Ceramic Society   Check publisher's open access policy
ISSN 0955-2219
1873-619X
Publication date 2014-06-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jeurceramsoc.2013.12.026
Volume 34
Issue 6
Start page 1599
End page 1610
Total pages 12
Place of publication London, United Kingdom
Publisher Elsevier
Language eng
Formatted abstract
One of the main factors limiting the lining lifetime in pyrometallurgical smelters is continuous refractory oxides dissolution in the slag bath. The overall wear is accelerated when the slag infiltrates the porous brick and the dissolution thus occurs in a larger part of the lining. This work investigates the possibility of preventing deep infiltration by sealing off the pores with newly formed phases. Static finger tests at constant temperature (1200°C) were performed in contact with a synthetic non-ferrous PbO-SiO2-MgO slag, showing the formation of forsterite (Mg2SiO4) throughout the refractory sample by the reaction between SiO2 (slag) and MgO (refractory). This phase grows with time, eventually sealing off the pores near the interface with the bath. The phase grows too slow to prevent full infiltration of the refractory but creates an equilibrium state in the sealed off part of the sample, ceasing the chemical corrosion in that part of the sample.
Keyword Forsterite formation
Magnesia chromite
PbO slag
Refractories
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
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