Abstract
We have newly developed such a special thermobance as permits both DTA and TGA under the same operating conditions; that is, DTA and TGA can be done with one same specimen.
With this new equipment, it is possible to make direct comparison between DTA curve and TGA curve. Therefore, comparing the DTA curve with the DTG curve on the dehydration of kaolin minerals at near 500°C by the simultaneous measurement, it may be conlcuded that their curves are similar to each other.
From their weight loss curves obtained by the dynamic method, the percentage, the reaction order and the activation energy of their dehydration, and by measuremnt of their specific heat, the temperature and the energy of their reactions are calculated.
