在铸铁生产中,铁水中的硫,一般是有害的。它使铸铁的铸造性能和机械性能变坏(硫形成较多的夹杂物而降低铁水的流动性,易产生白口,使铸件产生裂纹等)。在球墨铸铁中,硫的有害作用更为突出,硫与镁、稀土元素等球化剂有很大的亲和力,将大量消耗加入铁 In the production of cast iron, the sulfur in molten iron is generally harmful. It deteriorates castability and mechanical properties of cast iron (sulfur forms more inclusions and reduces the flowability of molten iron, which tends to produce white spikes and cracks in castings, etc.). In ductile iron, the harmful effects of sulfur are more prominent, sulfur and magnesium, rare earth elements and other nodularizers have a great affinity, will be a large number of consumption of iron