Ferro alloys are high value added products usually used in imparting special properties steel. SEML is one of the largest producers and exporters of ferro manganese with exports to more than 60 countries. For its contribution to ferro alloys export, SEML has been awarded Star-Export house status from the Government of India. The ferro alloys division constitutes the bulk of SEML’s top-line as well as bottom-line.

Ferro alloys are produced in sub-merged arc furnaces using electro-thermic process. The main raw materials are manganese ore, fluxes like dolomite & quartz and reductants like coke, charcoal & coa. Ore which is in metallic oxide form is smelted in the furnace. The reduction reactions are endothermic and necessary heat is supplied by captive electricity through graphite electrodes in the centre of the furnace. The electricity passing through the electrode to the metal creates arc which smelts the metal forming ferro alloys of desired quality.

SEML has total installed capacity of 45 MVA at its Siltara, Raipur plant. The installed capacity is being increased by 25% to 60 MVA due to improvements in operational efficiency.

Specification specification is as under

Product/ Grade Size %C %Mn %P %S %Si Ferro Manganese Normal Quality 10 - 150 mm 6.0 - 8.0 70.0 Min 0.400 Max 0.030 Max 1.50 Max Export Quality 10 - 50 mm 6.0 - 8.0 75.0 Min 0.300 Max 0.030 Max 1.50 Max Silico Manganese Normal Quality 10 - 150 mm 2.50 Max 60.0 Min 0.350 Max 0.050 Max 15.0 - 20.0 Export Quality 10 - 50 mm 2.50 Max 65.0 Min 0.300 Max 0.050 Max 15.0 - 20.0