Silicon slag is a by-product of smelting metal silicon and ferrosilicon.Imhando yetsvina inoyangarara pachoto ichiita kunyungudutsa silicon.Zvirimo zvinobva pa45% kusvika 70%,uye zvimwe zvacho C,S,P,Al,Fe,Ca. Iyo yakachipa zvakanyanya pane kuchena silicon simbi. Panzvimbo pekushandisa ferrosilicon kugadzira simbi, inogona kuderedza mutengo.