... content Silicon (30%~70%) and other components such as C, S, P, Al, Fe. It is a good substitute for ... %-97%, mainly used in refining pig iron / conventional casting. Silicon slag is the production of silicon by-products ... from the back, used in steel slag iron, common casting and so on. It also can be very good ... from the back, used in steel slag iron, common casting and so on, can be very good to improve ...