... can increase the used quantity of Scrap steel and reduce the quantity of Scrap iron, or use no Scrap iron at all, Duratight carbon additive ... to improve the Carbon content in steel-melting and Ductile iron foundry2,Characteristicahigh carbon, low sulfur, with stable effect for ... 3,apply Used in electric furnace steel smelting and cast-iron for improving the carbon content4,Grain size normal size0.3 ...