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CONSTITUTION AND THERMAL EXPANSION OF SILICA COKEOVEN BRICK AFTER SERVICE *
Author(s) -
Austin J. B.,
Pierce R. H. H.
Publication year - 1933
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.1151-2916.1933.tb16955.x
Subject(s) - brick , tridymite , cristobalite , quartz , materials science , mineralogy , coke , thermal expansion , atmospheric temperature range , metallurgy , petrography , composite material , geology , meteorology , physics
Two silica brick which were in service in a coke oven for over ten years have been examined under the petrographic microscope. At the fluc sidc the brick were almost completely converted to cristobalite, next comes a relatively thick layer which is mainly tridymite, and finally near the coke side quartz is found in addition. Measurements on small specimens taken from one of the brick show that the several layers have very different expansions. It is concluded that in cooling a battery of ovens great care should be taken to cool slowly through the temperature range 200 to 300°C.