Valorization of SiMn Sludge for Production of Low-Phosphorus Ferroalloys

Abstract The sludge generated by wet scrubbing the off-gas from a silicomanganese plant in Norway represents significant loss silicon and manganese values. This work seeks to extract these values production of ferroalloys slags that can be utilized alternative industries. Carbothermic smelting together with iron or scraps at 1600 °C produced FeSiMn alloys consisting 57–64 wt.% Mn, 16–22 Si 18–25 Fe. low level phosphorus allowed for beneficial concentrations as 500 ppmw metal alloys. addition lime material mix resulted increased evaporation alkalis, capture sulfur calcium sulfides slag compositions similar conventional steel-making recycled accordingly. Graphical