To correct the Corrective Minimum
deficiency of material concentration
“Iron” (Fe2O3) Iron Ore 60% Fe2O3
Pyrites Ash 60-90% Fe2O3
“Alumina” (Al2O3) Bauxite 50% Al2O3
Laterite 25% Al2O3
Kaolinite 40% Al2O3
“Silica” (SiO2) Quartz sand 80% SiO2
Quartzite 80% SiO2
“Lime” (CaO) Limestone 90% CaCO3
Marble