METHOD OF PRODUCING EXTRUSION BRIQUETTE Russian patent published in 2016 - IPC C22B1/243 B29C47/00 

FIELD: metal processing.

SUBSTANCE: invention relates to production of extrusion briquette from mill scale, intended for use as iron-containing raw material when melting cast iron or steel. Scale -3 mm fraction is mixed with 1-2 % bentonite, additional mixing is carried out with simultaneous addition of water to obtain a homogeneous mixture. Mixture is foamed for 8 to 24 hours. Method includes mixing in two-roll mixer with addition of 5 % of cement and water for obtaining humidity of charge 12-15 %, feeding into a vacuum chamber of extruder with preliminary compaction of charge in batcher extruder and passed through extruder, made with fixed front part of axis of main extrusion screw.

EFFECT: technical result consists in production of briquettes with high chemical and physical-mechanical properties, homogeneous quality with strength characteristics and specific density.

1 cl, 1 dwg, 1 tbl, 2 ex