Carbonization behaviour of coal briquettes in a slot-type coke oven

The carbonization behaviour of briquettes was investigated in order to examine whether it is possible to manufacture a formed coke from briquettes in the conventional slot-type coke oven. The properties of the formed coke depend very much on the heating rate of briquettes and the loading on the briquette bed. The former factor influences the temperature gradient in the width direction of the chamber during the carbonizing process which in turn influences the caking ability and thermal stress in the briquette. The volatile matter evolved passes through the briquette bed at the central part of the chamber, leaving some of it condensed to bring about problems such as the deformation and agglomeration of briquettes. Modifying the heating method and the properties of briquettes may remove these problems to some extent. However, a paramount difficulty of quality variation and agglomeration of briquettes resulting from the external heating method may rule out the slot-type coke oven for the production of formed cokes.