I-Silicon Slag ingumkhiqizo we-smelting wensimbi silicon kanye ne-Ferrosilicon.it uhlobo lwesikali esintantayo esithandweni sokulungiselela enqubweni yokushaya ama-silicon.it kufika kuma-70% kuye kwangama-70%, kanti abanye bangama-C, s, P, Al, Fe. Kushibhile kakhulu kune-silicon yensimbi ehlanzekile. Esikhundleni sokusebenzisa i-Ferrosilicon ngokwenza insimbi, kunganciphisa izindleko.