Silicon Slag yog cov khoom lag luam ntawm smelting hlau silicon thiab yog ib hom scum ntab nyob rau hauv cov txheej txheem ntawm cov txheej txheem ntawm 45%, thiab tus so yog C, S, AL, FE, CA. Nws yog cov pheej yig dua li Purity silicon hlau. Hloov chaw siv ferrosilicon rau steelmaking, nws tuaj yeem txo tus nqi.