Insimbi nensimbi slag zingahlukaniswa zibe blast somlilo slag kanye steelmaking slag. Ngakolunye uhlangothi, owokuqala ukhiqizwa ukuncibilika nokunciphisa insimbi yensimbi esithandweni somlilo. Ngakolunye uhlangothi, lena yokugcina yakhiwa phakathi nenqubo yokwenza insimbi ngokushintsha ukwakheka kwensimbi.