Fluorspar (Fluorite)

Fluorspar, or fluorite, is calcium fluoride (CaF₂) and the most widely used slag fluidiser in steelmaking. By breaking down the silicate network it sharply lowers slag viscosity and melting point, making the slag fluid and reactive and improving desulphurisation and dephosphorisation efficiency. Metallurgical grade is used in steel, acid grade in hydrofluoric acid production and the chemical industry.