Ferronickel’s main ingredients are nickel and iron, also contains Dr, Si, S, P, D and other impurity element. According to the international standard (ISO), based on the nickel contents, it divides to FeNi20 (Ni 15%~25%), FeNi30 (Ni 25%~35%), FeNi40 (Ni 35%~45%) and FeNi50 (Ni 45%~60%).?And also based carbon contents, it divides to HC ( C 1.0%~2.5%), MC (C0.030%~1.0%) and LC (C