To evaluate the effect of water and binder addition on the coal briquetting process and the strength of coal briquettes, coal briquettes were prepared, and their compressive strength was measured using a universal testing machine. As a result, the force required for briquetting process was reduced, and the compressive strength was improved with the addition of water and binder. Moreover, the observation of the internal structure of the briquette by X-ray CT clarified that the internal structure of briquette becomes dense in all additive cases compared with non-additive case. Therefore, it is suggested that the strength of briquettes is improved by the dense structure of briquettes with the addition of water and binder.
