Premium
Chemical Chunges in Basic Brick During Service
Author(s) -
BERRY T. F.,
ALLEN W. C.,
SNOW R. B.
Publication year - 1950
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.1151-2916.1950.tb12774.x
Subject(s) - brick , periclase , magnesite , silicate , materials science , metallurgy , chemical composition , roof , slag (welding) , mineralogy , solid solution , phase (matter) , spinel , chemical engineering , magnesium , chemistry , composite material , organic chemistry , engineering , structural engineering
The characteristic structure, chemical composition, and mineralogical constitution of the different zunes found in chrome‐magnesite brick after service are described. Silicate contamination probably results from the absorption of droplets of premelt slag that reach the open‐hearth roof. The analyses of the chrome crystals separated from the various zones indicate that FeO is found as an essential constituent only on the very hot face of the altered brick. Selective solution of the MgO. Al 2 O 3 portion of the chrome crystals in the silicate matrix is demonstrated by means of chemical analyses and phase‐equilibrium data. The lack of growth uf the chrome crystals and the tremendous growth of the periclase crystals immediately behind the hot face are described; this may have an important bearing on the peeling of the brick.