Smelting of ferrosilicon

Ferrosilicon is made by smelting coke, steel shavings, quartz (or silica) as raw materials in an electric furnace. Traditional smelting of ferrosilicon involves reducing silicon from silica containing SIO2. Most smelting of ferrosilicon uses metallurgical coke as a reducing agent, while steel chips are the regulator of ferrosilicon.

The production of one ton of ferrosilicon raw materials and electricity consumption are:
Silica: 1780-1850kg
Coke: 890-930kg
Steel chips: 220-230kg
Electrode paste: 45-55kg
Electricity consumption: 8400-9000kwh/t