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VŠIANSKÝ, D. NEVŘIVOVÁ, L. LANG, K. KOTOUČEK, M.
Original Title
EXAMINATION OF REFRACTORY SILICA BRICKS EXPOSED IN VARIOUS CONDITIONS
Type
conference paper
Language
English
Original Abstract
Phase composition and microstructure of silica bricks used as linings of coke ovens and pipes for more than twenty years were examined by means of X-ray diffraction, light microscopy and scanning electron microscopy and microanalysis. Properties of corroded silica brics were compared to the original sample stored in laboratory. Transformation of cristobalite to tridymite and increase of tridymite crystallite size due to repeated heating and cooling was observed. Tridymite polymorphism and tridymite/cristobalite ratio differences in the inner and outer part of silica pipe was documented and discussed. Cristobalite twins observable by light microspe occured in a sample of furnace linning which was partly molten during its use. Reasons of these mineralogical and microstructural changes are discussed.
Keywords
silica bricks, corrosion, tridymite, cristobalite
Authors
VŠIANSKÝ, D.; NEVŘIVOVÁ, L.; LANG, K.; KOTOUČEK, M.
RIV year
2013
Released
18. 9. 2013
Publisher
ECREF
Location
Německo
ISBN
978-3-9815813
Book
56th International Colloquium on Refractories 2013
Pages from
168
Pages to
172
Pages count
5
BibTex
@inproceedings{BUT102953, author="Dalibor {Všianský} and Lenka {Nevřivová} and Karel {Lang} and Miroslav {Kotouček}", title="EXAMINATION OF REFRACTORY SILICA BRICKS EXPOSED IN VARIOUS CONDITIONS", booktitle="56th International Colloquium on Refractories 2013", year="2013", pages="168--172", publisher="ECREF", address="Německo", isbn="978-3-9815813" }