Uburyo rusange bwo gutunganya nuburyo bukurikira:
1. Tangira kugabanya urwego rwibintu amasaha umunani mbere yo gutunganya kugirango ugabanye gukusanya ibikoresho 75 bya ferrosilicon mu itanura.
2. Nyuma y'itanura rya nyuma rya 75 Ferrosilicon rirangiye, hongewemo ibyuma (mubisanzwe bikuraho ibyuma). Amafaranga yongeweho mubusanzwe ahwanye cyangwa arenga gato ugereranije nicyuma gikozwe mumatanura yo gushonga bisanzwe ya 75 Ferrosilicon (ukeneye gutekereza Ukurikije ibintu nkurwego rwo gufatira munsi yitanura cyangwa ingano yicyuma gishongeshejwe mu itanura) , 45 ferrosilicon izarekurwa nyuma yamasaha 1 kugeza 1.5. Dukurikije isesengura ry’icyuma imbere y’itanura, niba silikoni ari ndende, urugero rukwiye rw’ibikoresho by'ibyuma rushobora kongerwaho icyuma gishongeshejwe; niba silikoni ari mike, hashobora kongerwaho urugero rwa ferrosilicon 75 (amafaranga yongeweho ni 45 ferrosilicon kuri toni. Kugira ngo silikoni yongerwe 1%, silikoni 75 igomba kongerwaho Kubara hashingiwe ku kilo 12 kugeza 14).
3. Nyuma yo kongeramo ibice by'ibyuma, urashobora kongeramo 45 ferrosilicon.
Kurugero: hari ibiro 3000 bya ferrosilicon murwego rwicyuma gishongeshejwe, hamwe nibirimo bya Si byasesenguwe mbere yuko itanura riba 50%, hanyuma umubare wibyuma bishaje bigomba kongerwamo icyuma gishongeshejwe ni:
3000 × (50 / 45-1) ÷ 0.95 = 350kg