Lubricating compositions for continuous casting processes and methods for making and using same

A lubricating composition for continuous casting steel production processes, said lubricating composition comprising a dispersion of a lubricating powder in a liquid medium, wherein the lubricating powder has a melting onset point below 600° C., measured at 1 atm of pressure, wherein said lubricating powder comprises carbon in graphite, milled coke or lamp black form, SiO2, Al2O3, Na2O, CaO, fluorides, transition metal oxides and other oxides and wherein it includes the following characteristics:

• Basicity Index calculated as CaO/SiO2 wt/wt, in the range 0.25-1.8;
• Alkali content in the range 0.1-15.0% wt.;
• Alkaline earth metal content in the range 0.1-45.0% wt.;
• Alumina content in the range 0.1-25.0% wt.;
• MnO, MnO2 and Fe2O3 content in the range 0.1-15.0% wt.;
• Fluoride content, F− in the range 0.1-14.0% wt.;
• Content of other oxides in the range 0.1-15.0% wt.;
• and
• Average particle size of the components 0.1-40 μm, measured according to an ASTM D4464-10 standard method.