Silico Manganese

Silico Manganese is an alloy with 65% to 68% manganese, 16% to 21% silicon, and 1.5% to 2% carbon. It is produced by smelting of slag from high-carbon Ferro Manganese or of Manganese ore with coke and a quartz flux. Smelting temperatures are high and greater energy is needed to reduce the quartz to silicon. So, the process requires power consumption of about 3,800 to 4,800 kilowatt-hours per tonne.

There are three variants of Silico Manganese:
  • High Carbon Silico Manganese
  • Medium Carbon Silico Manganese
  • Low Carbon Silico Manganese

Specification of Silico Manganese

SiMn HC MC LC ELC
  60/14 Grade 65/15 Grade 65/16 Grade 70/16 Grade 55/25 55/25 55/60
Mn 60% Min 65% Min 65% Min 70% Min 55% - 60% Min 55% - 60% Min 55% - 60% Min
Si 14% Min 15% Min 16% Min 16% Min 20% - 25% Min 25% - 30% Min 25% - 30% Min
C 2.50% Max 2.25% Max 2% Max 2% Max 0.5% Max 0.2% Max 0.1% Max
P 0.35% Max 0.35% Max 0.35% Max 0.30% Max 0.15% Max 0.15% Max 0.15% Max
S  0.03% Max  0.03% Max  0.03% Max  0.03% Max 0.03% Max 0.03% Max 0.03% Max