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VARIATIONS IN PYROMETRIC CONE EQUIVALENTS OF SILICA CEMENTS AND FIRE CLAYS 1
Author(s) -
Cole Sandford S.
Publication year - 1928
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.1151-2916.1928.tb16464.x
Subject(s) - calcination , mineralogy , materials science , grinding , cement , analytical chemistry (journal) , composite material , metallurgy , chemistry , environmental chemistry , biochemistry , catalysis
In order to determine what variations might occur due to the method of preparing the sample for the pyrometric cone equivalent test a series of 100 silica cements and five fire clays were tested using the cement “as received,” ground to pass a 65‐mesh Tyler screen, and after calcining a t 1400°C grinding to pass a 65‐mesh Tyler screen. The pyrometric cone equivalent values were obtained by two operators, the cones being made by one operator. It was found that testing of silica cements “as received” gave closer checks than ground samples. The grinding of the sample lowers the pyrometric cone equivalent 1 1/2 to 2 cones in general.