Transactions of the INDIAN CERAMIC SOCIETY Vol. 26 1967
Hydration of Magnesites Calcined up to 2ooooC*
J. c. BANERJEE, s. P. BANERJEE AND N. R. SIRCAR
Pages : 167-173
DOI : 10.1080/0371750X.1967.10855605
Abstract
Magnesites from different sources in India were studied for their hydration susceptibility
on calcination in the range of 1400°C to 2000°C. Hydration on weathering
over steam bath be.comes negligibly small on calcination around 1650°C. But autoclaving
in a saturated steam atmosphere causes serious deterioration for samples calcined up to
1700oC. Presence of impurities other than CaO, favouring development of various
silicates and magnesio-ferrite offers resistance to hydration. The inherent hydration
tendency may be largely overcome only with development of a rigid microstructure
comprised of a solid continuum and a minimum of voids after calcination at 1800°C.
The trend of hydration susceptibility of magnesites agrees closely with the other characteristics
of sintering.
