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AN INVESTIGATION OF THE ACTION OF COAL‐ASH SLAGS ON FIRE BRICK BY MICROSCOPIC METHODS *
Author(s) -
Simpson Harold E.
Publication year - 1932
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.1151-2916.1932.tb13886.x
Subject(s) - grind , metallurgy , brick , coal , materials science , slag (welding) , refractory (planetary science) , fly ash , mineralogy , waste management , composite material , chemistry , grinding , engineering
The action of coal‐ash slags on firebrick refractories was studied by microscopic examination of thin sections prepared from quenched samples of ash and refractory heated together. The eight refractories used varied as to clays, method of fabrication, grind, and firing treatment. Six different coal ashes varied from highly corrosive to noncorrosive ashes. Samples were quenched at intervals in the range of 2200 to 2800°F and the critical temperature or maximum safe operating temperature of all combinations of slag and refractory was determined. These values are presented together with a discussion of the various minerals formed.