Intsimbi kunye nentsimbi ye-slag inokwahlulwa ibe yi-blast furnace slag kunye ne-steelmaking slag. Kwisandla sokuqala, eso sangaphambili siveliswa ngokunyibilika kunye nokunciphisa intsimbi yentsimbi kwisithando somlilo. Ngakolunye uhlangothi, le yokugqibela yenziwa ngexesha lokwenziwa kwentsimbi ngokutshintsha ukubunjwa kwentsimbi.