FLUSHING EXTRUSION-TYPE BRIQUETTE (FEB) Russian patent published in 2013 - IPC C22B1/243 B28B3/20 B29C47/02 

FIELD: metallurgy.

SUBSTANCE: extrusion-type briquettes (FEB) produced using a method of stiff vacuum extrusion from the mixture of a mineral binding agent, technogenic and/or natural iron-containing and/or iron-and-manganese-containing materials and fluxing additives at atomic relation of oxygen of iron oxides to iron in FEB of 1.0-1.35 and the relation of oxides of calcium and silicon (CaO/SiO₂), which does not exceed 1.0, are used as a flushing component for blast-furnace charge. Size of particles of the materials includes in FEB composition does not exceed 5 mm, and its weight does not exceed 0.5 kg. As technogenic iron-containing material of FEB, which is used as a flushing component of blast-furnace charge, contains scale; as fluxing additives, it contains tails of benefication of ferruginous magnetite quartzites and/or dust of gas cleaning of ferrosilicon or silicomanganese production, and/or slag of ferrosilicon or silicomanganese production, and if necessary, natural or technogenic materials containing CaF₂.

EFFECT: obtaining a flushing component with an extremely dense and ductile structure, which has high flushing properties.

3 cl, 1 ex