Ferro Silicon

Ferrosilicon is an alloy of iron and silicon with an average silicon content between 15 and 90 weight percent. It contains a high proportion of iron silicides. Ferrosilicon is produced by reduction of silica or sand with coke in the presence of iron. Typical sources of iron are scrap iron or millscale.

ferrosilicon with silicon content up to about 15% are made in blast furnaces lined with acid fire bricks. ferrosilicon with higher silicon content is made in electric arc furnaces. The usual formulations on the market are ferrosilicon with 15%, 45%, 75%, and 90% silicon.