Parameters 48% and above 46-48% 44-46% 42-44% 40-42% 38-40%
Fe (max.) 7% 8% 10% 11% 13% 15%
SiO2 (max.) 7.5% 9% 10% 11% 12% 13%
Al2O3 (max.) 2% 3% 3.5% 4% 5% 6%
SiO2+Al2O3 (max.) 8% 10% 10% 12% 13% 15%
Mn:Fe ratio (min.) 7 6 4.5 3.5 3 2.5
Application  Production of Ferromanganese