Transactions of the INDIAN CERAMIC SOCIETY Vol. 44 1985
Characterization of Three Indian Clays
R. K. KHANDAL, P. K. GANGOPADHYAY AND T. C. RAO
Pages : 82-88
DOI : 10.1080/0371750X.1985.10822747
Abstract
This paper includes characterization of three industrially important
clays from three different regions of the country: Taldi clay from
Purulia district of Eastern Region, Kerala clay from Quilon district
of Southern Region and Bikaner clay from Bikaner district of
Western Region.
Taldi and Kerala clays were found to contain mainly kaolinite
(93.5% and 86.33% respectively) with quartz as an impurity. A
little amount of a micaceous mineral was also found to be present in
Kerala clay. Surface area, cation exchange capacity and moisture
absorption were found to be very low for these clays showing high
crystallinity of the mineral present in them.
Bikancr clay was found to contain mainly montmorillonite with
a little amount of kaolinite and quartz. It was observed that the dehydroxylation
took place at a lower temperature and in one step.
It was found to have large surface area, high cation exchange capacity
and moisture absorption capacity indicating disorderedness of
the clay structure.
