... product includes two kinds: casting steel using and casting iron using. The main ingredients are SiO2, Al2O3, Rapidly ... slag, gas, which is helpful for molten iron (steel) purification, improve castings quality, reduce casting rejection rate.4.Light proportion ... , moistureproof, ripstop. physical and chemical indexes (For casting iron using)Table 1: compositions compositions(element)loss on drying(lg ...