EXTRUSION BRIQUETTE FOR STEEL PRODUCTION Russian patent published in 2017 - IPC C22B1/243 

FIELD: metallurgy.

SUBSTANCE: invention refers to ferrous metallurgy, namely to obtainment of extrusion briquette containing metallurgy waste, such as metallurgy scales, and intended for use as a charge component in steel making processes. Extrusion briquette obtained by stiff vacuum extrusion consists of metallurgy scales, carbon-containing material, bentonite and cement, and contains, wt %: FeO > 10; Fe₂O₃ > 10; MgO 0.1-7.0; MnO 0.1-4.5; Cr₂O₃ 0.01-1.5; C 0.8-40.0; SiO₂ 0.1-10.0; ZnO 0.01-0.5; TiO₂ 0.01-1.5; CaO 0.1-10.0; Al₂O₃ 0.1-15.0, impurities < 3, where content of Fe_total comprises 20.0-80.0. Compression strength is at least 5.0 MPa, specific density is at least 3.0 kg/dm³, open porosity comprises at least 10 %, and softening start temperature is at least 1200 °C.

EFFECT: homogeneous quality of briquettes serving as accelerators of formation of highly active foaming free-running slag with increased content of lower iron oxide, reduced melting time and emergy cost, increased metal yield.

2 cl, 1 dwg, 3 tbl, 2 ex