Okokuqala, isetshenziswa njenge-deoxidizer kanye ne-alloying embonini yokwenza insimbi. Ukuze uthole insimbi ngokwakhiwa kwamakhemikhali afanelekayo futhi uqinisekise ikhwalithi yensimbi, i-deoxidation kufanele yenziwe ekupheleni kwe-steelmaking. Ukuhlobana kwamakhemikhali phakathi kwe-silicon nomoya-mpilo kukhulu kakhulu. Ngakho-ke, i-ferrosilicon iyi-deoxidizer eqinile yokwenza insimbi, esetshenziselwa imvula kanye ne-diffusion deoxidation. Ukwengeza inani elithile le-silicon ensimbi kungathuthukisa kakhulu amandla, ukuqina nokunwebeka kwensimbi.
Ngakho-ke, i-ferrosilicon iphinde isetshenziswe njenge-alloying agent lapho incibilikisa insimbi yesakhiwo (equkethe i-silicon 0.40-1.75%), insimbi yamathuluzi (equkethe i-silicon 0.30-1.8%), i-spring steel (equkethe i-silicon 0.40-2.8%) ne-silicon steel for transformer ( equkethe i-silicon 2.81-4.8%).
Ngaphezu kwalokho, embonini yokwenza insimbi, i-ferrosilicon powder ingakhulula inani elikhulu lokushisa ngaphansi kokushisa okuphezulu. Ivamise ukusetshenziswa njenge-ejenti yokushisisa ye-ingot cap ukuze kuthuthukiswe ikhwalithi nokutholwa kwe-ingot.