| Evaluation of Physico-Thermal Characteristics of
Mulieh Clay in Jaintia Hills, Meghalaya for Suitability
in Ceramic Industry |
S.c. BARAL
Pages : 124-128
DOI : 10.1080/0371750X.1997.10804811 |
| Abstract |
| The physico-thermal properties of kaolinised rocks
occurring at the Northern part of Mulieh village of Jaintia
Hills, Meghalaya were studied with a view to find out its
possible use in ceramic industry. The study was conducted
on the crude as well as washed fractions of Grade I and
Grade II clays obtained by systematic levigation. The
investigation included the determination of unfired physical
properties or all the three fractions of the clay leading to the
suitability in ceramic industry. The PCE values and· the
fired characteristics at six different temperatures starting
from 1200° to 1450°C at the interval or 50°C or all the three
levigated fractions of the clay were determined. The results
indicated that the crude clay being non-slaking in nature
and contained about 68% residual fraction required proper
processing for using it successfully in producing ceramic
articles. Grade I clay when mixed with other ceramic raw
materials in right proportions may prove promising in the
manufacture of ceramic whiteware products except, of
course, porcelain crockery due to the off-white fired colour.
On the other hand, Grade II fraction which the industry
may find useful if formulated judiciously considering the
physico-chemical properties or the clay. |
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