Ferrosilicon is a ferroalloy, 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. ==Production and reactions== Ferrosilicon is produced by reduction of silica or sand with coke in presence of iron. Typical sources of iron are scrap iron, millscale. Ferrosil...
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http://en.wikipedia.org/wiki/Ferrosilicon
(from the article `steel`) Most alloys are added in the form of ferroalloys, which are iron-based alloys that are cheaper to produce than the pure metals. Many different grades ...
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http://www.britannica.com/eb/a-z/f/20
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