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
| 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 |
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