EXTRUSION BRIQUETTE FOR VANADIUM-CONTAINING SLAG OBTAINMENT IN VANADIUM CAST IRON RECYCLING 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 obtainment of commercial vanadium-containing slag in the process of vanadium cast iron recycling. Extrusion briquette obtained by stiff vacuum extrusion consists of metallurgy scales, bentonite and cement, and contains, wt %: FeO 10.0-90.0; Fe₂O₃10.0-90.0; MnO 0.01-1.5; Cr₂O₃ 0.01-0.5; S 0.01-0.25; SiO₂ 3.0-7.0; CaO 0.1-5.0, impurities < 3, where content of Fe_total comprises > 60. 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: obtainment of briquettes with high chemical properties and homogeneous quality, serving as high quality products used as oxidation and cooling material in vanadium slag production.

2 cl, 2 dwg, 3 tbl, 2 ex