COMPOSITION FORPREPARING BRIQUETTED FUEL Russian patent published in 1994 - IPC

FIELD: coal and fuel industry and also in every day life for briquetting coal fines. SUBSTANCE: composition for preparing briquetted fuel comprises the following components (wt %): 2-4 a hydrocarbon petroleum fraction evaporating at temperatures between 260 and 360 C; 0.1-1.5 coal-tar pitch; 2-4 the liquid phase of the product resulting from hydrothermal treatment of perlite rock with alkali; 0.5-1.5 the solid phase of the product resulting from hydrothermal treatment of perlite rock with alkali 0.5-1.5 a sodium eluminate solution; and coal fires, the balance. EFFECT: improved strength of briquettes. 3 tbl