College of Construction Engineering��Jilin University��Changchun 130026��China

It is essential to study on its properties for the better development and utilization of oil shales. Through TG analysis on Nong'an oil shale in Jilin��the authors found that under N 2 atmosphere��their thermal weight loss was divided into three different periods��including the low temperature weight loss period (30�� ��300��)��the medium temperature weight loss period (300�� ��540��) and the elevated temperature weight loss period (500�� ��800��)��in which the medium temperature weight loss period was predominant. Thermal physical properties of Nong'an oil shale were carried out��as a result��thermal physical properties were proved to be anisotropic and these properties for horizontal bedding were higher than those for vertical bedding. In addition��heat conductivity coeffi- cient and volumetric specific heat capacity showed a similar tendency with the increment in temperature��while ther- mal diffusivity didn't present a remarkable change.