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Preparation of Dicalcium Siliciate at 950°C
Author(s) -
Kralj D.,
Matković B.,
Trojko R.,
Young J. F.,
Chan C. J.
Publication year - 1986
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.1151-2916.1986.tb04826.x
Subject(s) - sintering , mineralogy , atmosphere (unit) , amorphous solid , materials science , amorphous silica , reducing atmosphere , chemical engineering , chemistry , analytical chemistry (journal) , crystallography , metallurgy , thermodynamics , physics , organic chemistry , engineering
β‐Ca 2 Si0 4 can be obtained from a mixture ofCaC 2 O 4 ‐H 2 O and amorphous silica by firing at 950°C as opposed to a normal sintering temperature around 1450°C. If CaCO 3 is used instead of CaC 2 O 4 ·H 2 O, four repeated firings under CO 2 atmosphere are needed to obtain β‐Ca 2 SiO 4 . The role of CO 2 atmosphere during firing and the influence of specific surface of reactanm on the rate of reaction are discussed.