Ferrosilicon yog ib hom ferroalloy uas yog tsim los ntawm kev txo cov silica los yog xuab zeb nrog coke nyob rau hauv muaj hlau.Tej qhov chaw ntawm hlau yog cov hlau los yog millscale.Ferrosilicons nrog silicon cov ntsiab lus txog li 15% yog tsim nyob rau hauv blast furnaces lined nrog acid hluav taws cib.