Ferrosilicon, or ferrosilicium, is a ferroalloy an alloy of iron and silicon with between 15 and 90% silicon. It contains a high proportion of iron silicides. Its melting point is about 1200 °C to ...
DESCRIPTION
Ferrosilicon, or ferrosilicium, is a ferroalloy an alloy of iron and silicon with between 15 and 90% silicon. It contains a high proportion of iron silicides. Its melting point is about 1200 °C to 1250 °C with a boiling point of 2355 °C. Ferrosilicons with silicon content up to about 15% are made in blast furnaces lined with acid fire bricks. Ferrosilicons with higher silicon content are made in electric arc furnaces. An overabundance of silica is used to prevent formation of silicon carbide.
Types | Chemical synthesis(%) | ||||
≥ | ≤ | ≤ | |||
Si | Al | C | S | P | |
Ferrosilicon75 | 75 | 1.5 | 0.2 | 0.02 | 0.04 |
Ferrosilicon72 | 72 | 2.0 | 0.2 | 0.02 | 0.04 |
Ferrosilicon70 | 70 | 2.0 | 0.2 | 0.02 | 0.04 |
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