复吹转炉单炉新双渣法脱磷工艺研究与应用  

Research and application on dephosphorization pretreatment process in a single converter new double-slag process

作　　者：方宇荣 黄标彩 赖兆奕 陈伯瑜 曾兴富 

机构地区：[1]福建三钢闽光股份有限公司,福建三明365000

出　　处：《炼钢》2014年第3期1-4,共4页Steelmaking

摘　　要：介绍了福建三钢闽光股份有限公司开发的单炉新双渣法前期脱磷冶炼工艺与应用。100t转炉前期脱磷供氧强度2.0-2.7 m3/（t·min）,平均冶炼时间8.74 min,底搅强度为0.2 m3/（t·min）,半钢平均温度控制在1 328℃,炉渣碱度控制1.5,全铁质量分数控制在12%-16%,平均脱磷率达67.3%。单炉新双渣法冶炼一倒终点碳质量分数为0.113%,磷质量分数为0.011%;同常规冶炼相比,在终点碳含量相同情况下,终点磷质量分数下降了45%,造渣材料消耗下降11.6 kg/t。The practice of dephosphorization process with duplex melting with a single converter in Sansteel Minguang Co.,Ltd.,Fujian was introduced.The average dephosphorization rate was up to 67.3% in the case of blowing oxygen intensity 2.0-2.7m3/（t·min）,average blowing time 8.74 min,bottom stirring gas intensity 0.20 m3/t,average temperature 1 328℃,average basicity 1.51,and w（T.Fe）=12%-16% in early stage dephosphorization of 100 t converter.The carbon mass fraction was 0.113% and the phosphorus mass fraction was 0.011% using new double-slag process in one converter.Compared with the conventional smelting process,with the same endpoint carbon content,the phosphorus mass fraction decreased 45%,and the consumption of slagging material decreased 11.6 kg/t.

关 键 词：复吹转炉 单炉新双渣法 脱磷工艺 供氧 造渣 

分 类 号：TF704.4[冶金工程—钢铁冶金]