| Studies on Cordierite-Mullite Refntctories ·
Part-1 : Effect of Talc |
K. N. Maiti and K. C. Singh
Pages : 29-33
DOI : 10.1080/0371750X.2001.10799956 |
| Abstract |
| The effects of progressive incorporation of talcum powder in
conventional refractory body mix having 60% china clay and
40% grog have been studied. The specimens were fired at different
test temperatures ranging from 1200° to 1400'C with 2 h
dwelling time at the respective peak temperatures. The addition
of talc reduced the percent thermal expansion significantly as
well as enhanced the thermo-mechanical strength. The results
also revealed that the fired strength of the developed body
increased from 169.40 kg.cm-2 to 288.5 kg.cm-2 • The gradual
reduction in the percent thermal expansion values of the talc
containing bodies was attributed to the presence of cordierite
and mullite phases in the compositions. The thermal shock
resistance of the body mix containing 20 wt% talc was found to
be about 2.5 times higher than that of the standard body mix
fired at 1400°C. The developed refractory kiln furniture also
provided useful service life at a working temperature of 1250°C
in a bone china factory. |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
