前言目前我省生产球墨铸铁都使用本溪生铁为原材料,尤其是生产高韧性球墨铸铁必须用低磷本溪生铁。我省地方生铁年产30万吨,但存在着碳偏低,硅不稳定且偏高,磷、硫高等问题[1],因此用我省地方生铁生产球墨铸铁是多年来一直没有解决的问题。为充分利用地方资源,发挥地方资源的作用,同时更好推广和应用球墨铸铁这种新型结构 Preface At present, the production of ductile iron in our province uses Benxi pig iron as raw material, in particular, the production of high toughness ductile iron must use low-phosphorus Benxi pig iron. The annual output of pig iron in our province is 300,000 tons, but there are some problems such as low carbon, unstable and high silicon, high phosphorus and sulfur [1]. Therefore, the production of ductile iron from local pig iron in our province has not been solved for many years . To take full advantage of local resources, play a role of local resources, while better promotion and application of ductile iron this new structure