论文部分内容阅读
通过分析河北钢铁集团邯郸钢铁集团有限责任公司邯宝炼钢厂250 t复吹转炉冶炼高级别管线钢生产过程,提出了钢中氮含量偏高的原因,并针对原因制定了相应的措施,包括采用自动化炼钢减少后吹、提高转炉铁水比、转炉底吹低氮钢冶炼控制模式、钢包底吹氩操作控制和出钢过程防止钢水二次氧化增氮等措施。工艺优化后,降低了转炉钢水的氮含量,钢水氮质量分数平均控制在22.27×10-6。
By analyzing the production process of high-grade pipeline steel of 250 t compound blow converter in Handan Iron & Steel Group Co., Ltd of Handan Iron and Steel Group Co., Ltd., the reasons for the high nitrogen content in steel were put forward. Corresponding measures were put forward including reasons The use of automated steelmaking to reduce the post-blowing, increasing the ratio of hot metal to the converter, blowing low nitrogen steel smelting control mode at the bottom of the converter, argon blowing operation control at the bottom of the ladle, and secondary oxidation and nitrogen addition of molten steel during tapping. After process optimization, the nitrogen content of the converter steel was reduced, and the average nitrogen and nitrogen content of the molten steel was controlled at 22.27 × 10-6.