Premium
FUSION POINTS OF FIREBRICK‐COAL‐ASH MIXTURES 1
Author(s) -
Hewitt L. C.
Publication year - 1926
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.1151-2916.1926.tb17213.x
Subject(s) - brick , fly ash , refractory (planetary science) , metallurgy , materials science , raw material , coal , boiler (water heating) , slag (welding) , waste management , mineralogy , composite material , chemistry , engineering , organic chemistry
Six types of refractory brick were tested with five types of coal ash, the cone fusion points of the brick‐ash mixtures being determined over a range of 10% brick, 90% ash, to 40 % brick, 60% ash. A departure was made from previous methods in that high ash mixtures were studied rather than high brick mixtures, in the belief that boiler slags contain a relatively low proportion of the refractory. Sintered mixtures of refractory and ash tend to give higher fusion points than the raw mixtures do. Any determinations made in an uncontrolled atmosphere are exceedingly unreliable. The results obtained in this investigation indicate that the “cone‐slag test” is of very limited value as a means of selecting refractories for boiler service.