Ferro silicon 1.MOQ:20ton 2.High quality,low price 3.Application:steel-making,iron casting 4.Efficient,pure Steelmaking used Ferro silicon72%&75% Ferro silicon is a kind of ferroalloy which is composed of ferrum and silicon. Ferro silicon used coke, quartz (or silica) as raw material and using electric furnace made by . Because of silicon and oxygen are easily compound into SIO2,so the ...