COMBUSTION CALORIMETRIC AND THERMOGRAVIMETRIC STUDIES OF GRAPHITE ANDCOALS DOPED WITH A COAL-BURNING ADDITIVE

The effect of a coal-burning additive (CBA) on the calorific values of a high-rank coal and a low-rank coal was determined by using combusti on calorimetry. The results showed that CBA has no significant effect on the calorific values of the two coals. The catalytic and accelerati ng effects of CBA on the burning of the two coals were studied with th e help of thermogravimetric (TG) analysis. CBA speeds up the burning/o xidation of the coals. The effect of CBA due to its catalysis focuses on the burning of the carbons of the coals. The more the combustible c arbons in a coal, the more is the effective accelerating effects of CB A on the burning of the coal. In addition, the catalysis of CBA on the oxidation of a graphite was observed. The kinetic study on the cataly tic oxidation of the graphite by CIBA was also carried out and the res ults were presented.