含镍生铁在转炉冶炼含镍钢中的应用  

Application of nickel-containing pig iron in converter smelting of nickel-containing steel

作　　者：曹磊 高云飞 王国连 CAO Lei;GAO Yunfei;WANG Guolian(Material Engineering Department,Hebei Vocational University of Industry and Technology,Shijiazhuang 050091,China;Steel and Rolling Department,Shougang Jingtang United Iron and Steel Co.,Ltd.,Tangshan 063000,China)

机构地区：[1]河北工业职业技术大学材料工程系,河北石家庄050091 [2]首钢京唐钢铁联合有限责任公司钢轧部,河北唐山063000

出　　处：《炼钢》2022年第2期20-24,共5页Steelmaking

基　　金：河北省自然科学基金资助项目(E2021417001);河北工业职业技术大学预研项目(zy202202)。

摘　　要：结合国内某钢厂的生产实践,对含镍生铁在转炉冶炼含镍钢种的应用进行了热力学分析和动力学研究。热力学计算表明,不论是在标准状态下还是在转炉冶炼实际条件下,通过含镍铁块合金化进入铁液或钢液中的镍元素都不可能被氧化形成氧化镍。转炉冶炼X80-1钢表明,通过测定含镍铁块的熔化速率试验,25 mm厚的含镍铁块熔化速度比废钢熔化速度快30 s;转炉半钢成分检验结果表明含镍铁块加入转炉吹炼5 min后可以完全熔化。同时对转炉终渣成分进行扫描电镜以及XRF检测,未发现氧化镍,含镍铁块合金化镍的收得率接近100%。Combined with the practice of a domestic steel plant,the thermodynamic analysis and kinetic research for the application of nickel-containing pig iron in the converter smelting of nickel-containing steels were carried out.Thermodynamic calculations show that,whether in standard state or actual condition of converter smelting,the nickel element dissolved into the molten iron or molten steel through the alloying of the nickel-containing pig iron cannot be oxidized to nickel oxide.The melting rate test of nickel-containing iron block in converter smelting of X80-1 steel showed that the melting rate of nickel-containing iron block with 25 mm thickness was 30 s faster than that of scrap steel.The composition test results of converter semi-steel showed that the nickel-containing iron block could be completely melted after being added into the converter in 5 min.At the same time,through the scanning electron microscopy and X-ray power diffraction of the final slag of the converter,no nickel oxide was found,and the yield rate of nickel in nickel-containing iron block was close to 100%.

关 键 词：含镍生铁 含镍钢 转炉 合金化 

分 类 号：TF703[冶金工程—钢铁冶金]