Temperature Dependence of the Thermal conductivity of Grog Modified Kenyan Kaolite Refractory

Citation:
Kimani JN, Aduda BO. "Temperature Dependence of the Thermal conductivity of Grog Modified Kenyan Kaolite Refractory." Africa Journal of Science and Technology. 2004;1(5):6-14.

Abstract:

Thermal conductivity values, in the temperature range 300 – 1200 K, have been measured in air and at
atmospheric pressure for a Kenyan kaolinite refractory with 0% - 50% grog proportions. The experimental
thermal conductivity values were then compared with those calculated using the Zumbrunnen et al [1] and the
Litovsky and Shapiro [2] theoretical models. The experimental values for samples prepared without or low
percentages of grog increased with temperature as predicted by both the theoretical models. On the contrary,
the conductivity values for the sample containing ³ 40% decreased with increase in temperature in a manner
consistent with the Eucken law.

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