... defects such as slag, gas, which is helpful for molten iron (steel) purification, improve castings quality, reduce casting rejection rate ... , waterproof, moistureproof, ripstop. physical and chemical indexes (For casting iron using)Table 1: compositions compositions(element)loss on drying(lg ... .productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); slag catch sand for iron foundry