METHOD OF MEASURING BURNING MATERIAL IN KILN

PURPOSE:To make it possible to measure with a good reproducibility a highest tempera ture of thermal history of a material to be burnt by charging refractory blocks accom modating temperature measuring ceramic rings and having a heat transfer characteris tic which is substantially the same as that of the burning material, and after burning the burning raw material, and measuring the variation in the dimension of the tempera ture measuring ceramic rings. CONSTITUTION:Five accommodating space 13 are provided on the upper surface of refractory blocks 11. Four temperature measuring ceramic rings 12 are accommodated in four stages in one accommodating space 13 by a partition lid 14 made of a refrac tory material having a heat transfer factor which is substantially the same as that of the burning material 2. Refractory blocks 11 accommodating temperature measuring ceramic pings 12 and having a heat transfer factor substantially the same as that of the burning material for charged into a kiln 1 together with the burning material and are passed through a burning step, whereby the temperature measuring ceramic ring receives a thermal history which is the same as that of the burning material. Accordingly, the highest temperature of thermal history of the temperature measuring ceramic ring obtained from the change in the dimension of the temperature measuring ceramic ring 12 is equal to the highest history temperature received by the burning material.