Effect of Basicity, Al2O3 and MgO content on the softening and melting properties of the CaO-MgO-SiO2-Al2O3 high alumina quaternary slag systemTrinath Talapaneni, Natraj Yedla, Smarajit Sarkar and Snehanshu PalMetall. Res. Technol., 113 5 (2016) 501DOI: https://doi.org/10.1051/metal/2016015