Silicon slag yog ib yam khoom los ntawm smelting hlau silicon thiab ferrosilicon.Nws yog ib hom scum floating ntawm lub cub tawg nyob rau hauv tus txheej txheem ntawm smelting silicon.Nws cov ntsiab lus yog los ntawm 45% mus rau 70%, thiab tus so yog C, S, P, Al, Fe, Ca. Nws yog pheej yig dua li purity silicon hlau. Es tsis txhob siv ferrosilicon rau steelmaking, nws tuaj yeem txo tus nqi.