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How Do You Make Ferro Silicon?

How Do You Make Ferro Silicon?

Ferro silicon is made of coke, steel chips, quartz (or silica) by ferro silicon furnace smelting. In traditional ferrosilicon smelting, silicon is reduced from silica containing SiO2. Metallurgical coke is mostly used as reductant in ferrosilicon smelting, and steel scraps are mainly for blending purpose.

The raw materials and electric energy consumption for producing one ton ferrosilicon are as follows:

- Silica quartz: 1780-1850kg

- Coke: 890-930kg

- Steel scraps: 220-230kg

- Electrode paste: 45-55kg

- Power consumption: 8400-9000kwh / T

General smelting production process of ferro silicon furnace show as following graph:

2

Classifications of ferro silicon alloys can be refers to ISO standard as following table:

Grade chemical compositions %
Si Al P S C Mn Cr Ti
> >
FeSi10 8.0 13.0 0.2 0.15 0.06 2.0 3.0 0.8 0.3
FeSi15 14.0 13.0 1.0 0.15 0.06 1.5 1.5 0.8 0.3
FeSi25 20.0 20.0 1.5 0.15 0.06 1.0 1.0 0.8 0.3
FeSi45 41.0 30.0 2.0 0.05 0.05 0.2 1.0 0.5 0.3
FeSi50 47.0 47.0 1.5 0.05 0.05 0.2 0.8 0.5 0.3
FeSi65 63.0 51.0 2.0 0.05 0.04 0.2 0.4 0.4 0.3
FeSi75Al 72.0 68.0 1.0 0.05 0.04 0.2 0.5 0.3 0.3
FeSi75Al1.5 72.0 80.0 1.0 1.5 0.05 0.04 0.2 0.5 0.3 0.3
FeSi75Al2 72.0 80.0 1.5 2.0 0.05 0.04 0.2 0.5 0.3 0.3
FeSi75Al3 72.0 80.0 2.0 3.0 0.05 0.04 0.2 0.5 0.5 0.3
FeSi90Al1 87.0 95.0 1.5 0.04 0.04 0.2 0.5 0.2 0.3
FeSi90Al2 87.0 95.0 1.5 3.0 0.04 0.04 0.2 0.5 0.2 0.3

For any more details about ferro silicon furnace, please reach guoke1207@hotmail.com


Post time: Sep-07-2020